A standard matching, detection, cleaning integrated heavy metal monitoring device and water quality detection system

Abstract

The application provides a standard solution preparation, detection, cleaning integrated heavy metal monitoring equipment and water quality detection system, and relates to the field of online water quality monitoring. The monitoring equipment comprises a detection sample quantitative system, a sample quantitative system, a solvent conveying system, a standard mother liquor conveying system, a digestion chamber and a control system; the detection sample quantitative system comprises a first multi-channel valve, a standard solution mixing valve, a detection sample quantitative ring and a first residual liquid discharge pipe which are respectively connected with different hole positions of the first multi-channel valve; the sample quantitative system is provided with a second multi-channel valve, a sample inlet pipe, a vacuum pump, a sample quantitative ring and a second residual liquid discharge pipe which are respectively connected with different hole positions of the second multi-channel valve. The application can automatically prepare standard solutions with different concentrations for detection, and can also sample, filter and mix the sample with the solvent for quantitative detection. The application can realize automatic cleaning of the pipeline, the vacuum pump can quickly suck the solution, the pressure is stable, metal pollution caused by the pump body is avoided, and the accuracy of detection is ensured.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of water quality online monitoring, in particular to a standard detection and cleaning integrated heavy metal monitoring equipment and a water quality detection system. BACKGROUND

[0002] With the rapid development of economy and technology, the harm of heavy metal exceeding the standard to human health is emerging. The production process makes heavy metals discharged into the water environment. Since heavy metals are not easy to degrade, they are enriched in the natural environment and human body through drinking water, food chain and biological enrichment, causing serious harm to human health and ecological environment. Environmental water quality monitoring mainly relies on manual field sampling, which requires manual participation in a large amount of preliminary preparation work, such as water sample collection, preservation, transportation, reagent addition and standing digestion. Laboratory monitoring has defects such as low monitoring frequency, large sampling error, scattered monitoring data and inability to reflect pollution changes in time. Therefore, it is necessary to promote the online monitoring of heavy metals in water quality.

[0003] Current water quality heavy metal online monitoring mainly uses photometric method, anodic stripping method, ion electrode method and atomic absorption spectrometry. These methods have problems such as high detection limit, low accuracy, incomplete monitoring, low precision and accuracy, etc. Most of the existing inductively coupled plasma mass spectrometry instruments for heavy metal detection are applied to laboratory detection and analysis, and have advantages such as low detection limit, wide dynamic linear range, less interference, high analysis precision, fast analysis speed, simultaneous determination of multiple elements, and accurate isotope information.

[0004] At present, the existing detection equipment includes:

[0005] 1. A liquid dilution standard preparation device, which sucks mother liquor and diluent through double injection pumps, and injects them into sample bottles placed on a turntable to realize automatic standard preparation.

[0006] 2. A water quality heavy metal online monitoring system based on atomic fluorescence spectrometry, which can realize automatic quantitative sampling, multi-reagent pre-mixed digestion and hydride reaction.

[0007] 3. An automatic heavy metal water quality monitoring system, which can realize automatic water sampling and is used in combination with a heavy metal monitoring instrument.

[0008] 4. A water quality heavy metal online monitoring instrument, which uses a miniature spectrometer as a core detection device and can realize automatic online monitoring of heavy metal content such as mercury, lead, cadmium, chromium and arsenic in water quality.

[0009] It is found through research that an inductively coupled plasma mass spectrometer (ICP-MS) is widely used in the field of heavy metal detection, but is mostly used for laboratory analysis and monitoring. Existing online monitoring needs to manually prepare standard solutions of different concentrations, and a large amount of standard solutions of different concentrations are prepared at one time and stored for continuous monitoring, which increases the labor intensity and inaccuracy. At present, there are various automatic standard solution preparation devices, most of which store the prepared solutions in standard sample bottles, which cannot meet the requirements of inductively coupled plasma continuous sampling. At present, most water quality heavy metal online monitoring instruments use photometric method, anodic stripping method and ion electrode method, which have high detection limit, low accuracy, limited types of detectable elements, and insufficient coverage, resulting in incomplete monitoring, weak ability and failure to meet the detection requirements; real-time correction is lacking, and the precision and accuracy of data are greatly deviated compared with laboratory methods; and the color developing agent, masking agent, electrode and electroplating solution used in these methods will cause secondary pollution.

[0010] In view of this, the present application is proposed. SUMMARY

[0011] The purpose of the present application is to provide a standard solution preparation, detection and cleaning integrated heavy metal monitoring device and water quality detection system, which can automatically prepare standard solutions of different concentrations for detection, sample sampling and mixing with solvents for quantitative detection, automatic cleaning of pipelines, vacuum pump suction of solutions, fast pressure stability, avoidance of metal pollution caused by pump body, ensuring the accuracy of detection, and also having reverse pipeline automatic cleaning function.

[0012] The embodiments of the present application can be implemented as follows:

[0013] In a first aspect, the present application provides a standard solution preparation, detection and cleaning integrated heavy metal monitoring device, which comprises a detection sample quantitative system, a sample quantitative system, a solvent delivery system, a standard mother liquor delivery system, a digestion chamber and a control system.

[0014] The detection sample quantitative system comprises a standard solution mixing valve, a first multi-channel valve and a detection sample quantitative ring, and the standard solution mixing valve and the detection sample quantitative ring are in communication with different hole positions of the first multi-channel valve.

[0015] The sample quantitative system is provided with a second multi-channel valve, a sample inlet pipe, a vacuum pump, a sample quantitative ring and a backflushing pipe, and the sample inlet pipe, the vacuum pump, the sample quantitative ring and the backflushing pipe are in communication with different hole positions of the second multi-channel valve.

[0016] The second multi-channel valve is in communication with the solvent delivery system, the solvent delivery system is in communication with the digestion chamber, the digestion chamber and the standard mother liquor delivery system are in communication with the inlet of the standard solution mixing valve at the same time, the control system controls the change of the hole connection state of the first multi-channel valve to realize the injection of the liquid in the standard solution mixing valve into the detection sample quantitative ring and the discharge, and the control system controls the change of the hole connection state of the second multi-channel valve to realize the sample into the sample quantitative ring and the discharge from the sample quantitative ring to the solvent delivery system.

[0017] In an optional embodiment, the first multi-channel valve is a six-way valve, the six-way valve is provided with a six-way No. 1 hole, a six-way No. 2 hole, a six-way No. 3 hole, a six-way No. 4 hole, a six-way No. 5 hole and a six-way No. 6 hole, the first multi-channel valve is switched between a six-way input state and a six-way output state by the control system, in the six-way input state, the six-way No. 1 hole and the six-way No. 2 hole are in communication, the six-way No. 3 hole and the six-way No. 4 hole are in communication, and the six-way No. 5 hole and the six-way No. 6 hole are in communication; in the six-way output state, the six-way No. 6 hole and the six-way No. 1 hole are in communication, the six-way No. 2 hole and the six-way No. 3 hole are in communication, and the six-way No. 4 hole and the six-way No. 5 hole are in communication; the outlet of the standard solution mixing valve is in communication with the six-way No. 5 hole, the inlet of the detection sample quantitative ring is in communication with the six-way No. 6 hole, and the outlet of the detection sample quantitative ring is in communication with the six-way No. 3 hole.

[0018] Preferably, the detection sample quantitative system further comprises a first excess liquid discharge pipe, the first excess liquid discharge pipe is in communication with the six-way No. 4 hole.

[0019] In an optional embodiment, the standard solution detection and cleaning integrated heavy metal monitoring equipment further comprises an internal standard pipe and a standard addition mixing valve, the internal standard pipe and the six-way No. 2 hole are in communication with two inlets of the standard addition mixing valve respectively, and the outlet of the standard addition mixing valve is used to connect an atomizer.

[0020] In an optional embodiment, the second multi-channel valve is a ten-way valve, which is provided with a ten-way first hole, a ten-way second hole, a ten-way third hole, a ten-way fourth hole, a ten-way fifth hole, a ten-way sixth hole, a ten-way seventh hole, a ten-way eighth hole, a ten-way ninth hole and a ten-way tenth hole; the second multi-channel valve is switched between a ten-way input state and a ten-way output state by the control system; in the ten-way input state, the ten-way first hole and the ten-way second hole are communicated, the ten-way third hole and the ten-way fourth hole are communicated, the ten-way fifth hole and the ten-way sixth hole are communicated, the ten-way seventh hole and the ten-way eighth hole are communicated, and the ten-way ninth hole and the ten-way tenth hole are communicated; in the ten-way output state, the ten-way tenth hole and the ten-way first hole are communicated, the ten-way second hole and the ten-way third hole are communicated, the ten-way fourth hole and the ten-way fifth hole are communicated, the ten-way sixth hole and the ten-way seventh hole are communicated, and the ten-way eighth hole and the ten-way ninth hole are communicated; the sample injection tube is communicated with the ten-way first hole, the inlet and outlet of the sample quantification ring are communicated with the ten-way second hole and the ten-way fifth hole respectively, the inlet and outlet of the vacuum pump are communicated with the ten-way sixth hole and the ten-way tenth hole respectively, and the backflushing tube is communicated with the ten-way seventh hole.

[0021] Preferably, the sample quantification system further comprises a second residual liquid discharge tube, which is communicated with the ten-way ninth hole.

[0022] Preferably, the inlet end of the sample injection tube is provided with a filter, and a filter membrane is installed in the filter.

[0023] In an optional embodiment, the solvent delivery system comprises a solvent injection pump, a solvent pump electromagnetic valve and a solvent delivery valve, two outlets of the solvent pump electromagnetic valve are respectively communicated with the solvent injection pump and the ten-way third hole, the ten-way fourth hole is communicated with the solvent delivery valve, and the outlet of the solvent delivery valve is communicated with the inlet of the digestion chamber.

[0024] In an optional embodiment, the solvent injection pump comprises a first injection pump and a second injection pump, the solvent pump electromagnetic valve comprises a first solvent pump electromagnetic valve and a second solvent pump electromagnetic valve, one outlet of the first solvent pump electromagnetic valve is communicated with the first injection pump, one outlet of the second solvent pump electromagnetic valve is communicated with the second injection pump, the volume of the second injection pump is greater than that of the first injection pump, the other outlet of the first solvent pump electromagnetic valve and the other outlet of the second solvent pump electromagnetic valve are both communicated with the solvent delivery valve, and the first injection pump and the second injection pump are both connected with the control system.

[0025] Preferably, the solvent delivery system further comprises a solvent input three-way valve and a solvent input solenoid valve, an outlet of the solvent input solenoid valve being in communication with an inlet of the solvent input three-way valve, two outlets of the solvent input three-way valve being in communication with inlets of the first solvent pump solenoid valve and the second solvent pump solenoid valve respectively.

[0026] In an optional embodiment, the standard solution delivery system comprises a standard solution injection pump, a standard solution pump solenoid valve and a standard solution delivery valve, two outlets of the standard solution pump solenoid valve being in communication with the standard solution injection pump and the standard solution delivery valve respectively, an outlet of the digestion chamber and an outlet of the standard solution delivery valve being in communication with the standard solution mixing valve.

[0027] In an optional embodiment, the standard solution injection pump comprises a third injection pump and a fourth injection pump, the standard solution pump solenoid valve comprises a first standard solution pump solenoid valve and a second standard solution pump solenoid valve, one outlet of the first standard solution pump solenoid valve being in communication with the third injection pump, one outlet of the second standard solution pump solenoid valve being in communication with the fourth injection pump, a volume of the fourth injection pump being greater than that of the third injection pump, the other outlets of the first standard solution pump solenoid valve and the second standard solution pump solenoid valve being in communication with the standard solution delivery valve, the third injection pump and the fourth injection pump being connected to the control system.

[0028] Preferably, the standard solution delivery system further comprises a standard solution input three-way valve and a standard solution input solenoid valve, an outlet of the standard solution input solenoid valve being in communication with an inlet of the standard solution input three-way valve, two outlets of the standard solution input three-way valve being in communication with inlets of the first standard solution pump solenoid valve and the second standard solution pump solenoid valve respectively.

[0029] In an optional embodiment, the standard solution delivery system further comprises a standard solution input three-way valve and a standard solution input solenoid valve, an outlet of the standard solution input solenoid valve being in communication with an inlet of the standard solution input three-way valve, two outlets of the standard solution input three-way valve being in communication with inlets of the first standard solution pump solenoid valve and the second standard solution pump solenoid valve respectively.

[0030] In a second aspect, the present application provides a water quality detection system, comprising a detection instrument and the standard solution delivery system as described in any one of the preceding embodiments, an outlet of the detection product quantification ring being in communication with an inlet of the detection instrument, the detection instrument comprising an inductively coupled plasma mass spectrometer, an inductively coupled plasma emission spectrometer or an atomic absorption spectrometer.

[0031] The beneficial effects of the embodiments of the present application include, for example:

[0032] The application provides a standard solution preparation, detection and cleaning integrated heavy metal monitoring device, which can realize automatic water sampling, automatic sample filtration, automatic sample digestion, automatic online preparation of standard solutions with different concentrations required by standard curve preparation, and meets the needs of online monitoring of continuous sample feeding of a full-automatic continuous operation plasma mass spectrometer. In the whole analysis process, the automation is realized, the operation errors such as manual sample processing and manual standard solution preparation are reduced, and the precision and accuracy of data are ensured. The application switches the pipeline by switching the state of the valve, uses a vacuum pump to suck the aqueous solution under negative pressure, the solution is quickly sucked by the vacuum pump, the pressure is stable, the metal pollution caused by the pump body is avoided, the accuracy of detection is ensured, and the vacuum pump also has the function of reverse flushing the pipeline, so that the automatic cleaning system pipeline is completed before each sample analysis is finished, and a large amount of time is saved. The application can realize detection of multiple metal elements in water, and also realizes online internal standard correction, and quickly and accurately analyzes the element content in water. The reagents used by the application only include metal element standard solution, water and 2% nitric acid solution, the use of toxic and harmful chemical reagents such as masking agent and electroplating solution is avoided, the harm to human body and the secondary pollution to the environment are extremely small. In addition, the application also provides a water quality detection system, and the standard solution preparation, detection and cleaning integrated heavy metal monitoring device has high adaptability and can be suitable for various detection instruments. BRIEF DESCRIPTION OF DRAWINGS

[0033] In order to more clearly illustrate the technical solutions of the embodiments of the application, the following will briefly introduce the drawings needed to be used in the embodiments. It should be understood that the following drawings only show some embodiments of the application, and should not be regarded as a limitation to the scope. For those skilled in the art, other related drawings can also be obtained without creative labor.

[0034] Figure 1 The structure schematic diagram of the standard solution preparation, detection and cleaning integrated heavy metal monitoring device provided by the application is shown in the figure.

[0035] Figure 2 The connection schematic diagram of the second multi-channel valve in the ten-way input state in the standard solution preparation, detection and cleaning integrated heavy metal monitoring device provided by the application is shown in the figure.

[0036] Figure 3 The connection schematic diagram of the second multi-channel valve in the ten-way output state in the standard solution preparation, detection and cleaning integrated heavy metal monitoring device provided by the application is shown in the figure.

[0037] Figure 4 The connection schematic diagram of the first multi-channel valve in the six-way input state in the standard solution preparation, detection and cleaning integrated heavy metal monitoring device provided by the application is shown in the figure.

[0038] Figure 5The first multi-channel valve in the six-way output state of the integrated heavy metal monitoring equipment provided by the application is connected as shown in the schematic diagram;

[0039] Figure 6 The preparation and detection process of the sample online detection and pipeline backwashing process of the integrated heavy metal monitoring equipment provided by the application is shown in the flowchart.

[0040] Figure 7 The preparation and detection process of the sample online detection and pipeline backwashing process of the integrated heavy metal monitoring equipment provided by the application is shown in the flowchart.

[0041] Icon: 100-integrated heavy metal monitoring equipment for standard preparation, detection and cleaning;

[0042] 110-sample quantification system; 111-second multi-channel valve; 112-sample inlet tube; 1121-filter; 1122-filter membrane; 113-vacuum pump; 114-sample quantification ring; 115-second residual liquid discharge tube; 116-backwashing tube; 1a-ten-way first hole site; 2a-ten-way second hole site; 3a-ten-way third hole site; 4a-ten-way fourth hole site; 5a-ten-way fifth hole site; 6a-ten-way sixth hole site; 7a-ten-way seventh hole site; 8a-ten-way eighth hole site; 9a-ten-way ninth hole site; 10a-ten-way tenth hole site;

[0043] 120-solvent delivery system; 121-solvent input electromagnetic valve; 122-solvent input three-way valve; 123-solvent pump electromagnetic valve; 1231-first solvent pump electromagnetic valve; 1232-second solvent pump electromagnetic valve; 124-solvent injection pump; 1241-first injection pump; 1242-second injection pump; 125-solvent delivery valve;

[0044] 130-standard mother liquor delivery system; 131-mother liquor input electromagnetic valve; 132-mother liquor input three-way valve; 133-mother liquor pump electromagnetic valve; 1331-first mother liquor pump electromagnetic valve; 1332-second mother liquor pump electromagnetic valve; 134-mother liquor injection pump; 1341-third injection pump; 1342-fourth injection pump; 135-mother liquor delivery valve;

[0045] 140-digestion room;

[0046] 150-detection product quantification system; 151-standard solution mixing valve; 152-first multi-channel valve; 153-detection product quantification ring; 154-first residual liquid discharge tube; 1b-six-way first hole site; 2b-six-way second hole site; 3b-six-way third hole site; 4b-six-way fourth hole site; 5b-six-way fifth hole site; 6b-six-way sixth hole site;

[0047] 160 - internal standard tube; 161 - spiking mixing valve; 162 - peristaltic pump; 163 - nitric acid tube. DETAILED DESCRIPTION

[0048] For the purpose of making the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only some of the embodiments of the present application, rather than all the embodiments. The components of the embodiments of the present application described and shown in the drawings can be arranged and designed in various different configurations.

[0049] Therefore, the following detailed description of the embodiments of the present application provided in the drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application. All other embodiments obtained by those of ordinary skill in the art based on the embodiments in the present application without creative labor fall within the scope of protection of the present application.

[0050] It should be noted that: similar reference numerals and letters represent similar items in the following drawings, therefore, once an item is defined in one drawing, it does not need to be further defined and explained in subsequent drawings.

[0051] In the description of the present application, it should be noted that if the terms "upper", "lower", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, or the orientation or positional relationship in which the product of the present application is usually placed, which is only for the convenience of describing the present application and simplifying the description, and does not indicate or imply that the indicated device or element must have a particular orientation, be constructed and operated in a particular orientation, therefore, it cannot be understood as a limitation on the present application.

[0052] In addition, if the terms "first", "second" and the like appear, they are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0053] It should be noted that the features in the embodiments of the present application can be combined with each other without conflict.

[0054] Embodiment 1

[0055] Please refer to Figure 1 The present embodiment provides a standard detection and cleaning integrated heavy metal monitoring equipment 100, which comprises a sample quantification system 110, a solvent delivery system 120, a standard mother liquor delivery system 130, a digestion chamber 140, a detection product quantification system 150 and a control system (not shown in the figure).

[0056] The sample quantification system 110 is used to quantitatively discharge the sample, so as to facilitate subsequent addition of a solvent to prepare a to-be-tested product, and then quantitatively discharge the to-be-tested product through the detection product quantification system 150.

[0057] Please refer to Figure 1 , Figure 2 and Figure 3 In the present application, the sample quantification system 110 is provided with a second multi-channel valve 111, a sample inlet pipe 112, a vacuum pump 113, a sample quantification ring 114, a second residual liquid discharge pipe 115, a pure water storage tank and a backwashing pipe 116.

[0058] The sample inlet pipe 112, the vacuum pump 113, the sample quantification ring 114, the second residual liquid discharge pipe 115 and the backwashing pipe 116 are all in communication with different hole positions of the second multi-channel valve 111; the second multi-channel valve 111 is in communication with the solvent delivery system 120, and the control system controls the change of the connection state of the hole positions of the second multi-channel valve 111 to realize the entry of the sample into the sample quantification ring 114 and the discharge of the sample from the sample quantification ring 114 to the solvent delivery system 120.

[0059] Specifically, the second multi-channel valve 111 is a ten-way valve, which is provided with a ten-way first hole position 1a, a ten-way second hole position 2a, a ten-way third hole position 3a, a ten-way fourth hole position 4a, a ten-way fifth hole position 5a, a ten-way sixth hole position 6a, a ten-way seventh hole position 7a, a ten-way eighth hole position 8a, a ten-way ninth hole position 9a and a ten-way tenth hole position 10a; the second multi-channel valve 111 is switched between a ten-way input state and a ten-way output state by the control system, when in the ten-way input state (for example, Figure 2 ), the ten-way first hole position 1a and the ten-way second hole position 2a are in communication, the ten-way third hole position 3a and the ten-way fourth hole position 4a are in communication, the ten-way fifth hole position 5a and the ten-way sixth hole position 6a are in communication, the ten-way seventh hole position 7a and the ten-way eighth hole position 8a are in communication, and the ten-way ninth hole position 9a and the ten-way tenth hole position 10a are in communication; when in the ten-way output state (for example, Figure 3 ), the ten-way tenth hole position 10a and the ten-way first hole position 1a are in communication, the ten-way second hole position 2a and the ten-way third hole position 3a are in communication, the ten-way fourth hole position 4a and the ten-way fifth hole position 5a are in communication, the ten-way sixth hole position 6a and the ten-way seventh hole position 7a are in communication, and the ten-way eighth hole position 8a and the ten-way ninth hole position 9a are in communication.

[0060] The sample inlet pipe 112 is communicated with the ten-way first hole site 1a, and the inlet end of the sample inlet pipe 112 is provided with a filter 1121, and the filter 1121 is internally provided with a filter membrane 1122. The filter membrane 1122 in the embodiment can have various specifications, for example, the filter membrane 1122 with a size of 0.45-20 microns. The filter membrane 1122 in the embodiment has high filtering capacity, can remove most of the particulate impurities in the water body, can be repeatedly used after automatic pipeline cleaning, and meanwhile, the material matrix of the filter membrane 1122 is extremely polluted, thereby avoiding secondary pollution to the water body. The inlet and outlet of the sample quantitative ring 114 are respectively communicated with the ten-way second hole site 2a and the ten-way fifth hole site 5a, the inlet and outlet of the vacuum pump 113 are respectively communicated with the ten-way sixth hole site 6a and the ten-way tenth hole site 10a, the second residual liquid discharge pipe 115 is communicated with the ten-way ninth hole site 9a, and the outlet of the backwashing pipe 116 is communicated with the ten-way seventh hole site 7a, and the pure water storage tank is communicated with the inlet of the backwashing pipe 116.

[0061] Since the vacuum pump 113 in the application is communicated with the ten-way sixth hole site 6a, the ten-way sixth hole site 6a is communicated with the ten-way fifth hole site 5a in the input state, the inlet and outlet of the sample quantitative ring 114 are respectively communicated with the ten-way second hole site 2a and the ten-way fifth hole site 5a, and since the ten-way first hole site 1a and the ten-way second hole site 2a are communicated, the vacuum pump 113 can realize negative pressure adsorption of the sample quantitative ring 114 and the sample inlet pipe 112, and the sample realizes pre-filtering through the sample inlet pipe 112 before sampling, so that the sample can sequentially pass through the sample inlet pipe 112, the ten-way first hole site 1a, the ten-way second hole site 2a, the sample quantitative ring 114, the ten-way fifth hole site 5a and the ten-way sixth hole site 6a, and enter the sample quantitative ring 114, wherein the sample is quantified in the sample quantitative ring 114, and the excess sample enters the vacuum pump 113 from the ten-way sixth hole site 6a and is discharged from the ten-way tenth hole site 10a of the vacuum pump 113, and finally is discharged through the second residual liquid discharge pipe 115 communicated with the ten-way ninth hole site 9a, thereby realizing accurate quantification of the sample.

[0062] Please refer to Figure 1The solvent delivery system 120 comprises a solvent storage tank (not shown in the figure) storing 2% nitric acid solution, a solvent input electromagnetic valve 121, a solvent input three-way valve 122, a solvent pump electromagnetic valve 123, a solvent injection pump 124, and a solvent delivery valve 125. The solvent is input from the solvent input electromagnetic valve 121, the outlet of the solvent input electromagnetic valve 121 is connected to the inlet of the solvent input three-way valve 122, the outlet of the solvent input three-way valve 122 is connected to the inlet of the solvent pump electromagnetic valve 123, one outlet of the solvent pump electromagnetic valve 123 is connected to the inlet of the solvent injection pump 124, and the solvent injection pump 124 can quantitatively discharge the solvent from the other outlet of the solvent pump electromagnetic valve 123 to the solvent delivery valve 125. In this application, the outlet of the solvent injection pump 124 is connected to the third hole position 3a of the ten-way valve, and the fourth hole position 4a is connected to the solvent delivery valve 125. In this application, the solvent injection pump 124 comprises a first injection pump 1241 and a second injection pump 1242, the solvent pump electromagnetic valve 123 comprises a first solvent pump electromagnetic valve 1231 and a second solvent pump electromagnetic valve 1232, one outlet of the first solvent pump electromagnetic valve 1231 is connected to the first injection pump 1241, one outlet of the second solvent pump electromagnetic valve 1232 is connected to the second injection pump 1242, the volume of the second injection pump 1242 is greater than that of the first injection pump 1241, wherein the outlet of the second injection pump 1242 is connected to the third hole position 3a of the ten-way valve, the outlets of the first injection pump 1241 and the second injection pump 1242 of the first solvent pump electromagnetic valve 1231 and the fourth hole position 4a are all connected to the solvent delivery valve 125, and the first injection pump 1241 and the second injection pump 1242 are connected to the control system. The two outlets of the solvent input three-way valve 122 are respectively connected to the inlets of the first injection pump 1241 and the second injection pump 1242 of the first solvent pump electromagnetic valve 1231 and the second solvent pump electromagnetic valve 1232. In this application, by setting two injection pumps with different volumes, the solvent can be input in large capacity and high precision, and the solvent entering the solvent delivery valve 125 can be output according to the preset amount. In addition, in this application, the pump speed of the first injection pump 1241 and the second injection pump 1242 can be adjusted by the control system, so as to realize quantitative output of the solvent.

[0063] The standard mother liquor conveying system 130 comprises a metal element standard solution storage tank (not shown in the figure), a mother liquor input electromagnetic valve 131, a mother liquor input three-way valve 132, a mother liquor pump electromagnetic valve 133, a mother liquor injection pump 134, and a mother liquor conveying valve 135. The metal element standard solution storage tank stores metal element standard solution mother liquor, and is in communication with the mother liquor input electromagnetic valve 131 to realize the input of the mother liquor. The mother liquor injection pump 134 comprises a third injection pump 1341 and a fourth injection pump 1342. The mother liquor pump electromagnetic valve 133 comprises a first mother liquor pump electromagnetic valve 1331 and a second mother liquor pump electromagnetic valve 1332. One outlet of the first mother liquor pump electromagnetic valve 1331 is in communication with the third injection pump 1341, and one outlet of the second mother liquor pump electromagnetic valve 1332 is in communication with the fourth injection pump 1342. The volume of the fourth injection pump 1342 is greater than that of the third injection pump 1341. The inlets of the first mother liquor pump electromagnetic valve 1331 and the second mother liquor pump electromagnetic valve 1332, the third injection pump 1341 and the fourth injection pump 1342 are all in communication with the mother liquor input electromagnetic valve 131. The other outlets of the first mother liquor pump electromagnetic valve 1331 and the second mother liquor pump electromagnetic valve 1332, the third injection pump 1341 and the fourth injection pump 1342 are all in communication with the mother liquor conveying valve 135. The third injection pump 1341 and the fourth injection pump 1342 are both connected with the control system. In the present application, two injection pumps with different volumes are arranged to realize large-capacity input and high-precision input of the solvent, so as to ensure that the mother liquor entering the mother liquor conveying valve 135 can be output according to the preset amount. In addition, in the present application, the pump speed of the third injection pump 1341 and the fourth injection pump 1342 can be adjusted by the control system, so as to realize the quantitative output of the mother liquor.

[0064] The digestion chamber 140 is used to realize the output of the sample and the solvent after digestion. In the present application, the inlet of the digestion chamber 140 is in communication with the outlet of the solvent conveying valve 125, and the outlet of the digestion chamber 140 and the outlet of the mother liquor conveying valve 135 are both in communication with the standard solution mixing valve 151. After the solvent passes through the digestion chamber 140, the solvent is mixed with the mother liquor in the standard solution mixing valve 151 to prepare standard solutions with different concentrations, which are input into the detection sample quantitative system 150 to realize the detection of standard solutions with different concentrations and generate a standard curve. When detecting, the mixed solution of the solvent and the sample can be directly input into the detection sample quantitative system 150 after passing through the standard solution mixing valve 151 to realize the detection of the sample.

[0065] The detection sample quantitative system 150 is used to realize the quantification of the standard solution when preparing the standard solution, and also realizes the quantification of the sample to be detected after the sample is mixed with the solvent.

[0066] Please refer to Figure 1 , Figure 4 and Figure 5In the present application, the detection sample quantification system 150 includes a standard solution mixing valve 151, a first multi-channel valve 152, a detection sample quantification ring 153, and a first excess solution discharge pipe 154, all of which are in communication with different hole positions of the first multi-channel valve 152. The control system controls the hole position connection state of the first multi-channel valve 152 to change to realize the injection of the liquid in the standard solution mixing valve 151 into the detection sample quantification ring 153 and discharge.

[0067] Specifically, in the present embodiment, the first multi-channel valve 152 is a six-way valve, which is provided with a six-way first hole position 1b, a six-way second hole position 2b, a six-way third hole position 3b, a six-way fourth hole position 4b, a six-way fifth hole position 5b, and a six-way sixth hole position 6b. The first multi-channel valve 152 is switched between a six-way input state and a six-way output state by the control system. In the six-way input state (for example, Figure 4 ), the six-way first hole position 1b and the six-way second hole position 2b are in communication, the six-way third hole position 3b and the six-way fourth hole position 4b are in communication, and the six-way fifth hole position 5b and the six-way sixth hole position 6b are in communication. In the six-way output state (for example, Figure 5 ), the six-way sixth hole position 6b and the six-way first hole position 1b are in communication, the six-way second hole position 2b and the six-way third hole position 3b are in communication, and the six-way fourth hole position 4b and the six-way fifth hole position 5b are in communication. The outlet of the standard solution mixing valve 151 is in communication with the six-way fifth hole position 5b, the inlet of the detection sample quantification ring 153 is in communication with the six-way sixth hole position 6b, the outlet of the detection sample quantification ring 153 is in communication with the six-way third hole position 3b, and the first excess solution discharge pipe 154 is in communication with the six-way fourth hole position 4b.

[0068] In addition, in the present application, the standard addition detection cleaning integrated heavy metal monitoring equipment 100 further includes an internal standard pipe 160 and a standard addition mixing valve 161, the internal standard pipe 160 and the six-way second hole position 2b are in communication with two inlets of the standard addition mixing valve 161 respectively, and the outlet of the standard addition mixing valve 161 is used to connect an atomizer. The arrangement of the internal standard pipe 160 and the standard addition mixing valve 161 can realize the internal standard addition of the to-be-measured sample, realize online internal standard correction, and facilitate the rapid and accurate analysis of the element content in water.

[0069] Next, the present embodiment will introduce in detail the preparation and detection process of the to-be-measured sample required for preparing the standard curve, the online detection process of the sample, and the process of pipe backwashing by using the above-mentioned standard addition detection cleaning integrated heavy metal monitoring equipment 100.

[0070] (1) Preparation and detection process of the to-be-measured sample required for preparing the standard curve.

[0071] Please refer to Figure 1 and Figure 6The control system controls the ICP-MS ignition and performs automatic preparation of the standard curve. The flow paths of all solenoid valves (solute input solenoid valve 121, mother liquor input solenoid valve 131, first solute pump solenoid valve 1231, second solute pump solenoid valve 1232, first mother liquor pump solenoid valve 1331, and second mother liquor pump solenoid valve 1332) are switched to the right side, the second multi-channel valve 111 is switched to the ten-way input state, and the first multi-channel valve 152 is switched to the six-way input state. The first injection pump 1241 and the second injection pump 1242 suck a set volume of nitric acid diluent, which enters from the lower normally open port of the solute input solenoid valve 121, flows out from the right outlet of the solute input solenoid valve 121, enters the first injection pump 1241 and the second injection pump 1242 from the right inlet of the first solute pump solenoid valve 1231 and the right inlet of the second solute pump solenoid valve 1232, respectively, after passing through the solute input three-way valve 122. At the same time, the mother liquor of the standard solution enters from the lower normally open port of the mother liquor input solenoid valve 131, flows out from the right outlet of the mother liquor input solenoid valve 131, enters the third injection pump 1341 and the fourth injection pump 1342 from the right inlet of the first mother liquor pump solenoid valve 1331 and the right inlet of the second mother liquor pump solenoid valve 1332, respectively, after passing through the mother liquor input three-way valve 132.

[0072] The flow paths of the first solute pump solenoid valve 1231, the second solute pump solenoid valve 1232, the first mother liquor pump solenoid valve 1331, and the second mother liquor pump solenoid valve 1332 are switched to the left side. The first injection pump 1241 pushes the solution out from the left outlet of the first solute pump solenoid valve 1231, and the second injection pump 1242 pushes the solution into the ten-way third hole position 3a of the second multi-channel valve 111 from the left outlet of the second solute pump solenoid valve 1232, and then pushes it out from the ten-way fourth hole position 4a, mixes with the nitric acid diluent flowing out from the left outlet of the first solute pump solenoid valve 1231 in the solute delivery valve 125, and flows out into the digestion chamber 140. The third injection pump 1341 and the fourth injection pump 1342 push the mother liquor of the standard solution out from the left outlets of the first mother liquor pump solenoid valve 1331 and the second mother liquor pump solenoid valve 1332, mix in the mother liquor delivery valve 135, and enter the standard solution mixing valve 151 to mix with the digested nitric acid diluent in the standard solution mixing valve 151. It should be noted that the speed at which each injection pump pushes the solution is set so that the nitric acid diluent and the mother liquor of the standard solution mix at a set speed. Different pump speeds are set to prepare standard solutions of different concentrations. The standard solution of a certain concentration mixed in the standard solution mixing valve 151 enters the six-way fifth hole position 5b of the first multi-channel valve 152, flows into the detection product quantification ring 153 from the six-way hole, and the excess standard solution enters the six-way fourth hole position 4b from the six-way third hole position 3b, and flows out through the first excess liquid discharge pipe 154.

[0073] The first multi-channel valve 152 is switched to the six-way output state, and the nitric acid solution in the nitric acid pipe 163 pumped by the peristaltic pump 162 enters the six-way No. 1 hole site 1b of the first multi-channel valve 152 from the six-way No. 6 hole site 6b, and pushes the standard solution in the detection product quantitative ring 153 out of the six-way No. 2 hole site 2b. The standard solution flowing out of the six-way No. 2 hole site 2b is uniformly mixed with the internal standard solution in the internal standard pipe 160 pumped by the peristaltic pump 162 in the addition mixing valve 161, atomized in the atomizer, and enters the mass spectrometer for detection and analysis. After the analysis is completed, the data results are automatically uploaded. In this application, the nitric acid solution pumped by the peristaltic pump 162 is mainly used to push the solution in the detection product quantitative ring 153 out, so as to facilitate the mixing of the quantitative detection product with the subsequent internal standard solution. At the same time, the nitric acid solution pushes the standard solution out, which can clean the detection product quantitative ring 153.

[0074] (2) Sample online detection process.

[0075] In this embodiment, after the standard curve is drawn, the heavy metal elements in the sample can be qualitatively and quantitatively determined.

[0076] Specifically, please refer to Figure 1 and Figure 7 During the sample online detection process, the flow paths of all solenoid valves (solvent input solenoid valve 121, mother liquor input solenoid valve 131, first solvent pump solenoid valve 1231, second solvent pump solenoid valve 1232, first mother liquor pump solenoid valve 1331, and second mother liquor pump solenoid valve 1332) are switched to the right, the second multi-channel valve 111 is switched to the ten-way input state, and the first multi-channel valve 152 is switched to the six-way input state.

[0077] The vacuum pump 113 is started, and the water sample is filtered by the filter membrane 1122 in the filter 1121, and then enters the ten-way No. 1 hole site 1a of the second multi-channel valve 111, flows into the sample quantitative ring 114 from the ten-way No. 2 hole site 2a, and flows to the ten-way No. 6 hole site 6a from the ten-way No. 5 hole site 5a to enter the vacuum pump 113. The excess sample is discharged from the ten-way No. 9 hole site 9a, which realizes the quantitative input and storage of the sample in the sample quantitative ring 114.

[0078] The vacuum pump 113 is closed, and the second multi-channel valve 111 is switched to the ten-way output state. The first injection pump 1241 and the second injection pump 1242 respectively suck a set volume of nitric acid diluent, which enters from the lower normally open port of the first injection pump 1241, flows out from the right outlet of the solvent input electromagnetic valve 121, and after passing through the solvent input three-way valve 122, enters the first injection pump 1241 and the second injection pump 1242 from the right inlets of the first solvent pump electromagnetic valve 1231 and the second solvent pump electromagnetic valve 1232 respectively. The flow paths of the first solvent pump electromagnetic valve 1231 and the second solvent pump electromagnetic valve 1232 are switched to the left. The nitric acid solution in the second injection pump 1242 enters the ten-way three-hole position 3a of the second multi-channel valve 111 from the left outlet of the second solvent pump electromagnetic valve 1232, pushes the sample in the sample quantification ring 114 out from the ten-way five-hole position 5a through the ten-way two-hole position 2a. The sample solution flows out through the ten-way four-hole position 4a, mixes with the nitric acid diluent flowing out from the left outlet of the first solvent pump electromagnetic valve 1231 in the solvent delivery valve 125, and flows out into the digestion chamber 140. The sample solution is added with trace nitric acid solution in the solvent delivery valve 125, and after flowing out from the digestion chamber 140, enters the six-way five-hole position 5b of the first multi-channel valve 152, flows into the sample quantification ring from the six-way six-hole position 6b, and the excess sample enters the six-way four-hole position 4b through the six-way three-hole position 3b and flows out through the first excess liquid discharge pipe 154.

[0079] The first multi-channel valve 152 is switched to the six-way output state, and the peristaltic pump 162 pumps the nitric acid solution into the six-way six-hole position 6b of the first multi-channel valve 152 from the six-way one-hole position 1b, and pushes the standard solution in the detection sample quantification ring 153 out from the six-way two-hole position 2b. The standard solution flowing out from the six-way two-hole position 2b is uniformly mixed with the internal standard solution in the internal standard tube 160 pumped by the peristaltic pump 162 in the addition standard mixing valve 161, is atomized in the atomizer, and enters the mass spectrometer for detection and analysis. After the analysis is completed, the data results are automatically uploaded.

[0080] (3) Process of pipeline backwashing

[0081] After the second multi-channel valve 111 is switched to the ten-way output state, the vacuum pump 113 and the injection pump are started at the same time, and the aqueous solution in the pure water tank is sucked into the second multi-channel valve 111 from the ten-way seven-hole position 7a, flows from the ten-way seven-hole position 7a to the ten-way six-hole position 6a, enters the vacuum pump 113, and finally flows out from the filter 1121, thereby realizing reverse flushing of the pipeline and the filter 1121. That is, the backwashing in the present application is mainly aimed at this section of the pipeline for sample tube feeding. The backwashing can flush away the impurities accumulated on the filter screen of the filter 1121, thereby ensuring the stability of the feeding and the filtering effect.

[0082] In addition, part of the nitric acid solution can also be sucked by the second injection pump 1242 in this application, so as to realize the discharge of the nitric acid solution from the left side of the second solvent pump electromagnetic valve 1232 to the tenth three-hole position 3a of the second multi-channel valve 111. At this time, since the second multi-channel valve 111 is still in the tenth output state, the tenth three-hole position 3a is in communication with the tenth two-hole position 2a, the nitric acid solution enters the sample quantitative ring 114 to realize the flushing of the sample quantitative ring 114, and then is discharged from the tenth five-hole position 5a and discharged to the solvent delivery valve 125 through the tenth four-hole position 4a in communication with the tenth five-hole position 5a. The nitric acid in the solvent delivery valve 125 can further pass through the digestion chamber 140 and enter the sixth five-hole position 5b of the first multi-channel valve 152. At this time, the first multi-channel valve 152 is in the output state, the sixth five-hole position 5b is in communication with the sixth four-hole position 4b, and finally is discharged from the first residual liquid discharge pipe 154. Since the sample in the sample quantitative ring 153 is pushed out by the nitric acid solution, it is equivalent to being cleaned once, so when the nitric acid solution sucked by the second injection pump 1242 is used for cleaning, the sample quantitative ring does not need to be cleaned.

[0083] The standard curve detection and cleaning integrated heavy metal monitoring equipment 100 provided by the application can realize automatic water sampling, automatic sample filtration, automatic sample digestion, automatic online preparation of different concentrations of standard solutions required for standard curve preparation, and the like, and meets the needs of continuous sample feeding for online monitoring of the full-automatic continuous operation of the plasma mass spectrometer. In the whole analysis process, the automation is realized, the operation errors such as manual sample processing and manual standard solution preparation are reduced, and the precision and accuracy of the data are ensured. The application switches the pipeline by switching the state of the valve, uses the vacuum pump 113 to suck the aqueous solution under negative pressure, the vacuum pump 113 sucks the solution quickly, the pressure is stable, the metal pollution caused by the pump body is avoided, and the accuracy of the detection is ensured. At the same time, the vacuum pump 113 also has the function of reverse flushing the system pipeline, realizes automatic cleaning of the system pipeline before each sample analysis is completed, and saves a lot of time. The application can realize the detection of multiple metal elements in water, and also realizes online internal standard correction, and quickly and accurately analyzes the element content in water. The reagents used by the application only include metal element standard solution, water and 2% nitric acid aqueous solution, the use of toxic and harmful chemical reagents such as masking agent and electroplating solution is avoided, the harm to the human body and the secondary pollution to the environment are extremely small.

[0084] In addition, the application also provides a water quality detection system, which comprises a detection instrument and the above-mentioned integrated heavy metal monitoring equipment 100 for standard matching, detection and cleaning, the outlet of the detection product quantitative ring 153 is communicated with the inlet of the detection instrument, and the detection instrument comprises an inductively coupled plasma mass spectrometer, an inductively coupled plasma emission spectrometer or an atomic absorption spectrometer. The integrated heavy metal monitoring equipment 100 for standard matching, detection and cleaning in the application has high adaptability and can be adapted to various detection instruments.

[0085] The above is only a specific embodiment of the application, but the protection scope of the application is not limited to this, any person skilled in the art can easily think of changes or replacements within the technical range disclosed by the application, which should be covered in the protection scope of the application. Therefore, the protection scope of the application should be subject to the protection scope of the claims.

Claims

1. A calibration-detection-cleaning integrated heavy metal monitoring device, characterized in that, It includes detection sample quantitative system, sample quantitative system, solvent delivery system, standard mother liquor delivery system, digestion room and control system; the detection sample quantitative system includes standard solution mixing valve, first multi-channel valve and detection sample quantitative ring, the standard solution mixing valve and the detection sample quantitative ring are all communicated with different hole positions of the first multi-channel valve; The sample quantitative system is provided with a second multi-channel valve, a sample inlet pipe, a vacuum pump, a sample quantitative ring and a back flushing pipe, the sample inlet pipe, the vacuum pump, the sample quantitative ring and the back flushing pipe are all communicated with different hole positions of the second multi-channel valve; The second multi-channel valve is communicated with the solvent delivery system, the solvent delivery system is communicated with the digestion room, the digestion room and the standard mother liquor delivery system are simultaneously communicated with the inlet of the standard solution mixing valve, the control system controls the change of the hole position connection state of the first multi-channel valve to realize the sample injection and discharge of the liquid in the standard solution mixing valve into the detection sample quantitative ring, the control system controls the change of the hole position connection state of the second multi-channel valve to realize the sample entering the sample quantitative ring and discharging from the sample quantitative ring to the solvent delivery system; The second multi-channel valve is a ten-way valve, the ten-way valve is provided with a ten-way first hole position, a ten-way second hole position, a ten-way third hole position, a ten-way fourth hole position, a ten-way fifth hole position, a ten-way sixth hole position, a ten-way seventh hole position, a ten-way eighth hole position, a ten-way ninth hole position and a ten-way tenth hole position; The solvent delivery system includes a solvent injection pump, a solvent pump electromagnetic valve and a solvent delivery valve, two outlets of the solvent pump electromagnetic valve are respectively communicated with the solvent injection pump and the ten-way third hole position, the ten-way fourth hole position is communicated with the solvent delivery valve, and the outlet of the solvent delivery valve is communicated with the inlet of the digestion room; the solvent injection pump includes a first injection pump and a second injection pump, the solvent pump electromagnetic valve includes a first solvent pump electromagnetic valve and a second solvent pump electromagnetic valve, one outlet of the first solvent pump electromagnetic valve is communicated with the first injection pump, one outlet of the second solvent pump electromagnetic valve is communicated with the second injection pump, the volume of the second injection pump is greater than that of the first injection pump, the other outlet of the first solvent pump electromagnetic valve and the second solvent pump electromagnetic valve is all communicated with the solvent delivery valve, and the first injection pump and the second injection pump are connected with the control system. The standard mother liquor conveying system comprises a mother liquor injection pump, a mother liquor pump electromagnetic valve and a mother liquor conveying valve, two outlets of the mother liquor pump electromagnetic valve are respectively communicated with the mother liquor injection pump and the mother liquor conveying valve, and outlets of the digestion chamber and the mother liquor conveying valve are communicated with the standard solution mixing valve; the mother liquor injection pump comprises a third injection pump and a fourth injection pump, the mother liquor pump electromagnetic valve comprises a first mother liquor pump electromagnetic valve and a second mother liquor pump electromagnetic valve, one outlet of the first mother liquor pump electromagnetic valve is communicated with the third injection pump, one outlet of the second mother liquor pump electromagnetic valve is communicated with the fourth injection pump, the volume of the fourth injection pump is greater than that of the third injection pump, and the other outlets of the first mother liquor pump electromagnetic valve and the second mother liquor pump electromagnetic valve are both communicated with the mother liquor conveying valve, and the third injection pump and the fourth injection pump are connected with the control system.

2. The integrated monitoring device of claim 1, wherein, The first multi-channel valve is a six-way valve, the six-way valve is provided with a six-way No. 1 hole site, a six-way No. 2 hole site, a six-way No. 3 hole site, a six-way No. 4 hole site, a six-way No. 5 hole site and a six-way No. 6 hole site, the first multi-channel valve is switched between a six-way input state and a six-way output state by the control system, in the six-way input state, the six-way No. 1 hole site and the six-way No. 2 hole site are communicated, the six-way No. 3 hole site and the six-way No. 4 hole site are communicated, and the six-way No. 5 hole site and the six-way No. 6 hole site are communicated; in the six-way output state, the six-way No. 6 hole site and the six-way No. 1 hole site are communicated, the six-way No. 2 hole site and the six-way No. 3 hole site are communicated, and the six-way No. 4 hole site and the six-way No. 5 hole site are communicated; the outlet of the standard solution mixing valve is communicated with the six-way No. 5 hole site, the inlet of the detection product quantitative ring is communicated with the six-way No. 6 hole site, and the outlet of the detection product quantitative ring is communicated with the six-way No. 3 hole site. 3.The device according to claim 2, characterized in that, The detection product quantitative system further comprises a first excess liquid discharge pipe, and the first excess liquid discharge pipe is communicated with the six-way No. 4 hole site.

4. The integrated monitoring device for heavy metals according to claim 2, wherein The standard-detection-cleaning integrated heavy metal monitoring equipment further comprises an internal standard pipe and a standard addition mixing valve, the internal standard pipe and the six-way No. 2 hole site are respectively communicated with two inlets of the standard addition mixing valve, and an outlet of the standard addition mixing valve is used for connecting an atomizer.

5. The integrated monitoring device for heavy metals according to claim 1, wherein The second multi-channel valve switches between a ten-way input state and a ten-way output state through the control system. In the ten-way input state, the ten-way port 1 and port 2 are connected, the ten-way port 3 and port 4 are connected, the ten-way port 5 and port 6 are connected, the ten-way port 7 and port 8 are connected, and the ten-way port 9 and port 10 are connected. In the ten-way output state, the ten-way port 10 is connected to the ten-way port 1. The No. 2 port is connected to the No. 3 port of the 10-port system; the No. 4 port of the 10-port system is connected to the No. 5 port of the 10-port system; the No. 6 port of the 10-port system is connected to the No. 7 port of the 10-port system; the No. 8 port of the 10-port system is connected to the No. 9 port of the 10-port system; the sample inlet tube is connected to the No. 1 port of the 10-port system; the inlet and outlet of the sample metering loop are connected to the No. 2 port of the 10-port system and the No. 5 port of the 10-port system, respectively; the inlet and outlet of the vacuum pump are connected to the No. 6 port of the 10-port system and the No. 10 port of the 10-port system, respectively; and the backflushing tube is connected to the No. 7 port of the 10-port system.

6. The integrated monitoring device for heavy metals according to claim 5, wherein The sample quantification system also includes a second residual liquid discharge tube, which is connected to the No. 9 ten-way port.

7. The integrated monitoring device for heavy metals according to claim 5, wherein The inlet end of the sample injection tube is equipped with a filter, and a filter membrane is installed inside the filter. 8.The device according to claim 1, wherein, The solvent delivery system further includes a solvent input three-way valve and a solvent input solenoid valve. The outlet of the solvent input solenoid valve is connected to the inlet of the solvent input three-way valve, and the two outlets of the solvent input three-way valve are respectively connected to the inlets of the first solvent pump solenoid valve and the second solvent pump solenoid valve. 9.The device according to claim 1, wherein, The standard mother liquor delivery system also includes a mother liquor input three-way valve and a mother liquor input solenoid valve. The outlet of the mother liquor input solenoid valve is connected to the inlet of the mother liquor input three-way valve, and the two outlets of the mother liquor input three-way valve are respectively connected to the inlets of the first mother liquor pump solenoid valve and the second mother liquor pump solenoid valve.

10. The integrated monitoring device for heavy metals according to claim 9, wherein, The integrated heavy metal monitoring equipment for labeling, testing, and cleaning also includes a metal element standard solution storage tank, a pure water storage tank, and a solvent storage tank. The metal element standard solution storage tank is connected to the solenoid valve of the mother liquor pump, the pure water storage tank is connected to the backwash pipe, and the solvent storage tank is connected to the solenoid valve of the solvent pump.

11. A water quality detection system characterized by, It includes a detection instrument and an integrated heavy metal monitoring device for labeling, detection, and cleaning as described in any one of claims 1-10, wherein the outlet of the quantitative ring for the sample is connected to the inlet of the detection instrument, and the detection instrument includes an inductively coupled plasma mass spectrometer, an inductively coupled plasma emission spectrometer, or an atomic absorption spectrometer.

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