Enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water

Abstract

The utility model provides an enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water. The enrichment device comprises a liquid level laser transmitter, a laser receiver and a sample cup. The utility model provides an enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water, which is characterized in that a liquid level laser transmitter, a laser receiver, a sample cup, a heating jacket, a pipette and an air cooling fan are matched with one another, the 10ml pipette extracts 10ml of a sample and guides the sample into the sample cup, a heater is started for heating, and the sample is kept not boiling; meanwhile, a light beam emitted by the laser penetrates through the sample cup and reaches the laser receiver, the laser receiver sends out a signal when 1ml is evaporated and reaches the scale, and heating is stopped; and the air cooling fan is started to cool the heated sample cup to the normal temperature, conventional analysis is carried out, the device can rapidly achieve enrichment of detected ions, the detection limit of total reflection X fluorescence monitoring heavy metal is improved, and the practicability of the device is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of heavy metal detection in water, especially relate to a kind of enrichment device for total reflection X fluorescence spectrum detection heavy metal in water. BACKGROUND

[0002] Water quality monitoring is an important part of environmental monitoring, which can accurately and timely reflect the current situation and development trend of water quality, provide scientific basis for water environment management, pollution control and environmental planning, and has important role and significance for water resources protection, pollution early warning and control, and maintenance of water quality health, heavy metal elements cannot be biodegraded, but can be exponentially increased and enriched in organisms along the food chain, and finally enter the human body, heavy metals can interact strongly with proteins and various enzymes in the human body, making them lose activity, or enrich in certain organs of the human body, causing heavy metal poisoning, at the same time, heavy metals can affect the function of central nervous system, and have great harm to human body, heavy metal pollution mainly exists in water pollution, and heavy metal monitoring in water is the primary task of water quality protection and prevention.

[0003] X-ray fluorescence spectroscopy (XRF) is a green and environmentally friendly non-destructive multi-element simultaneous analysis and detection method, which is widely used in the analysis of major, minor and trace elements in environmental samples. In recent years, portable X-ray spectrometer (XRF) has been widely used in trace element analysis of geological materials, which has the characteristics of small size, light weight, fast analysis speed and on-site non-destructive testing, and can realize qualitative and quantitative analysis according to the characteristic X-ray fluorescence energy, wavelength and intensity emitted by heavy metals excited to high energy state.

[0004] However, X-ray fluorescence spectroscopy directly samples and tests, and the detection limit is not enough, generally 5-10ppb, and the emission limit of some elements is much lower than the detection limit of the instrument; the enrichment test operation is complex, and needs to be added and dried for enrichment again and again; the enrichment measurement error is relatively large, due to the volume error of each addition, the chromatography radius formed by drying is not easy, so the cumulative system error is relatively large.

[0005] Therefore, it is necessary to provide an enrichment device for total reflection X fluorescence spectrum detection of heavy metal in water to solve the above technical problems. UTILITY MODEL CONTENT

[0006] The utility model provides an enrichment device for total reflection X fluorescence spectrum detection of heavy metal in water, which solves the problems of insufficient detection limit in sampling test, emission limit of some elements much lower than the detection limit of the instrument, complex enrichment test operation and relatively large enrichment measurement error.

[0007] In order to solve the above technical problems, the utility model provides an enrichment device for total reflection X fluorescence spectrum detection heavy metal in water, include: liquid level laser emitter, laser receiver and sample cup,

[0008] Heating jacket, heating jacket is located on the outer surface of the sample cup, liquid level laser emitter is located on one side of the outer surface of the sample cup, laser receiver is located on the other side of the outer surface of the sample cup, the top of one side of the outer surface of the sample cup is provided with air -cooled fan,

[0009] Pipette, pipette is arranged in the inside of the sample cup.

[0010] Preferably, the both sides of the outer surface of the sample cup are fixedly installed with driving devices, the outer surface of the driving device is threadedly engaged with a protection device, the top of the outer surface of the sample cup is fixedly installed with a sealing connecting device, the driving device comprises a fixed block, a rotating part, a guide rod and a blocking block, the protection device comprises a protection box, a sealing element and a threaded plate, and the sealing connecting device comprises a receiving box and a sealing groove.

[0011] Preferably, the top of the protection device is fixedly installed with a recovery pipe, one end of the recovery pipe is fixedly connected with an activated carbon adsorption box, one side of the top of the activated carbon adsorption box is fixedly connected with a connecting pipe, the other end of the connecting pipe is fixedly installed with a catalytic oxidation device, one side of the catalytic oxidation device is fixedly connected with a discharge pipe, and the surface of the discharge pipe is provided with an air pump.

[0012] Preferably, the fixed block is fixedly installed on one side of the outer surface of the sample cup, the rotating part is fixedly installed at the bottom of the fixed block, the guide rod is fixedly connected to the top end of the output shaft of the rotating part, and the blocking block is fixedly installed at the top end of the guide rod.

[0013] Preferably, the threaded plate is threadedly engaged with the outer surface of the guide rod, the protection box is fixedly installed on one side of the outer surface of the threaded plate, and the sealing element is fixedly installed at the bottom of the outer surface of the protection box.

[0014] Preferably, the receiving box is fixedly installed on the top of the outer surface of the sample cup, and the sealing groove is formed in the middle of the top of the receiving box.

[0015] Preferably, the rotating part adopts a servo motor structure, the guide rod adopts a threaded rod structure, and the sealing element adopts a rubber pad structure.

[0016] Compared with the related art, the enrichment device for total reflection X fluorescence spectrum detection heavy metal in water has the following beneficial effects:

[0017] The utility model provides a kind of enrichment device for total reflection X fluorescence spectrum detection heavy metal in water, through liquid level laser emitter, laser receiver, sample cup, heating jacket, pipette and air cooling fan mutual cooperation, 10ml pipette extracts sample 10ml, imports sample cup, starts heater heating, maintains sample not boiling;While laser emission beam passes through sample cup, reaches laser receiver, when evaporates to 1ml reaches scale, laser receiver sends signal, stops heating;Start air cooling fan cooling heated sample cup to normal temperature, carry out routine analysis, the device can rapidly realize the enrichment of measured ion, improve the detection limit of total reflection X fluorescence monitoring heavy metal, improve the practicality of this device. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1 It is a kind of structural schematic diagram for the enrichment device for total reflection X fluorescence spectrum detection heavy metal in water first embodiment provided by the utility model;

[0019] Figure 2 It is a kind of structural schematic diagram for the enrichment device for total reflection X fluorescence spectrum detection heavy metal in water second embodiment provided by the utility model;

[0020] Figure 3 It is Figure 2 It is the side view schematic diagram of activated carbon adsorption box shown in;

[0021] Figure 4 It is the enlarged schematic diagram of A shown in. Figure 2

[0022] Marked number in drawing: 1, liquid level laser emitter, 2, laser receiver, 3, sample cup, 4, heating jacket, 5, pipette, 6, air cooling fan, 7, driving device, 71, fixed block, 72, rotating piece, 73, guide rod, 74, blocking block, 8, protection device, 81, protection box, 82, sealing element, 83, threaded plate, 9, sealed connection device, 91, storage box, 92, sealing groove, 10, recovery pipe, 11, activated carbon adsorption box, 12, connecting pipe, 13, catalytic oxidation device, 14, discharge pipe, 15, air pump, 16, dismounting box. DETAILED DESCRIPTION

[0023] The utility model is further described below in connection with drawing and embodiment.

[0024] First embodiment

[0025] Please combine with Figure 1 Among them, Figure 1 ​The utility model provides a kind of for the structure schematic diagram of the enrichment device for total reflection X fluorescence spectrum detection heavy metal in water first embodiment provided by the utility model.A kind of for the enrichment device of total reflection X fluorescence spectrum detection heavy metal in water, comprising: liquid level laser emitter 1, laser receiver 2 and sample cup 3;

[0026] Heating jacket 4, the heating jacket 4 is set to the outer surface of the sample cup 3, the liquid level laser emitter 1 is set to one side of the outer surface of the sample cup 3, the laser receiver 2 is set to the other side of the outer surface of the sample cup 3, the top of one side of the outer surface of the sample cup 3 is provided with air cooling fan 6;

[0027] Pipette 5, the pipette 5 is set to the inside of the sample cup 3.

[0028] The working principle of the enrichment device for total reflection X fluorescence spectrum detection heavy metal in water provided by the utility model is as follows:

[0029] When working, first, pipette 5 is inserted into the water quality sample to be detected, and the sample is slowly sucked by suction ball, so that the liquid level rises above the pipette scale line, then the upper opening of the pipette is blocked with the index finger, the liquid level is slowly adjusted to the 10ml scale, and it is ensured that the concave liquid surface bottom of the liquid level is tangent to the scale line.

[0030] Pipette 5 is vertically moved above sample cup 3, the index finger is gently released, and the sample is slowly flowed into sample cup 3, so that the sample is not spilled during pipetting.

[0031] The power switch of the heater 4 is turned on, the appropriate heating temperature is set according to the properties of the water quality sample and the experimental requirements, the sample in the sample cup is maintained in a non-boiling state, generally, the temperature can be set in the range close to the boiling point of water but lower than the boiling point, for example, 90-95 DEG C, during the heating process, the state of the sample is closely observed, the temperature of the sample is monitored in real time through temperature sensor or thermometer, and it is ensured that the temperature is stably set in the set range.

[0032] The laser emission device is started, the light beam emitted by the laser emission device accurately passes through the center position of sample cup 3 and reaches laser receiver 2, the position and angle of the laser emission device and laser receiver 2 are adjusted, and it is ensured that the light beam can be completely and stably received by the receiver.

[0033] During the heating process, as the water in the sample evaporates, the volume of the sample gradually decreases, and when the sample volume evaporates to 1ml to reach the scale, due to the change in the optical properties of the sample, the light signal received by the laser receiver 2 will change accordingly, and when this change reaches the pre-set threshold, the laser receiver 2 sends a signal, and once the signal sent by the laser receiver 2 is received, the power switch of the heater 4 is turned off, and the heating is stopped to avoid excessive evaporation causing the loss of heavy metal components in the sample or chemical reaction.

[0034] Turn on the power switch of the air cooling fan 6, align the air outlet of the fan with the sample cup 3, so that the cooling air can uniformly blow through the surface of the sample cup, adjust the air speed and direction of the fan to speed up the cooling speed of the sample cup, and during the air cooling process, use a thermometer to monitor the temperature of the sample cup in real time, when the temperature of the sample cup 3 drops to near the ambient temperature (generally considered that the temperature difference is within ±2℃ as normal temperature), turn off the power switch of the air cooling fan 6.

[0035] Compared with the related art, the enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water has the following beneficial effects:

[0036] The enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water provided by the utility model, through the cooperation of the liquid level laser emitter 1, the laser receiver 2, the sample cup 3, the heating jacket 4, the pipette 5 and the air cooling fan 6, 10ml pipette 5 extracts 10ml sample, and introduces the sample into the sample cup 3, starts the heater 4 to heat and maintain the sample from boiling; meanwhile, the light beam emitted by the laser passes through the sample cup and reaches the laser receiver 2, and when the sample evaporates to 1ml to reach the scale, the laser receiver sends a signal to stop heating; the air cooling fan 6 is started to cool the heated sample cup to normal temperature, and normal analysis is carried out, the device can quickly realize the enrichment of the measured ions, improve the detection limit of the total reflection X fluorescence monitoring of heavy metals, and improve the practicability of the device.

[0037] Second embodiment

[0038] Please refer to Figure 2 , Figure 3 and Figure 4 , based on the first embodiment of the present application, the enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water is provided, and the second embodiment of the present application proposes another enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water. The second embodiment is only a preferred mode of the first embodiment, and the implementation of the second embodiment will not affect the separate implementation of the first embodiment.

[0039] Specifically, the second embodiment of this application provides an enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy, which differs in that, in this enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy, driving devices 7 are fixedly installed on both sides of the outer surface of the sample cup 3, a protective device 8 is threaded onto the outer surface of the driving device 7, and a sealing connection device 9 is fixedly installed on the top of the outer surface of the sample cup 3. The driving device 7 includes a fixing block 71, a rotating component 72, a guide rod 73, and a blocking block 74. The protective device 8 includes a protective box 81, a sealing component 82, and a threaded plate 83. The sealing connection device 9 includes a storage box 91 and a sealing groove 92.

[0040] A recovery pipe 10 is fixedly installed in the middle of the top of the protective device 8. One end of the recovery pipe 10 is fixedly connected to an activated carbon adsorption box 11. A connecting pipe 12 is fixedly connected to one side of the top of the activated carbon adsorption box 11. A catalytic oxidation device 13 is fixedly installed at the other end of the connecting pipe 12. An exhaust pipe 14 is fixedly connected to one side of the catalytic oxidation device 13. An air pump 15 is provided on the surface of the exhaust pipe 14.

[0041] The fixing block 71 is fixedly installed on one side of the outer surface of the sample cup 3, the rotating part 72 is fixedly installed on the bottom of the fixing block 71, the guide rod 73 is fixedly connected to the top end of the output shaft of the rotating part 72, and the blocking block 74 is fixedly installed on the top end of the guide rod 73.

[0042] The threaded plate 83 is threadedly engaged with the outer surface of the guide rod 73, the protective box 81 is fixedly installed on one side of the outer surface of the threaded plate 83, and the sealing element 82 is fixedly installed on the bottom of the outer surface of the protective box 81.

[0043] The storage box 91 is fixedly installed on the top of the outer surface of the sample cup 3, and the sealing groove 92 is opened in the middle of the top of the storage box 91.

[0044] The rotating component 72 adopts a servo motor structure, the guide rod 73 adopts a threaded rod structure, and the sealing component 82 adopts a rubber gasket structure.

[0045] The sample cup 3 has a drive device 7 installed on the left and right sides of its outer surface. The two sets of drive devices 7 drive the guide rod 73 to rotate through the output shaft of the rotating part 72. The rotating guide rod 73 engages with the threaded plate 83, causing the protective box 81 to move downward and cover the top of the sample cup 3. The sealing part 82 can be embedded into the sealing groove 92 to achieve a seal.

[0046] The activated carbon adsorption box 11 is equipped with a disassembly box 16, which contains activated carbon packs for easy recycling and addition of activated carbon packs.

[0047] The working principle of the enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water is as follows:

[0048] In working, the output shaft of the rotating part 72 rotates to drive the guide rod 73 to rotate, the guide rod 73 rotates to engage with the threaded plate 83, the threaded plate 83 drives the protective box 81 to cover the sample cup 3 downwards, the sealing element 82 is embedded into the inside of the sealing groove 92, and the sample cup 3 and the protective box 81 are sealed and installed.

[0049] When the air pump 15 works, the recovery pipe 10 absorbs the smoke generated by evaporation in the sample cup 3 and transmits to the activated carbon adsorption box 11 and the catalytic oxidation device 13 for purification, and then is discharged from the discharge pipe 14.

[0050] Compared with the related art, the enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water has the following beneficial effects:

[0051] The enrichment device for total reflection X fluorescence spectrum detection of heavy metals in water is driven by the driving device 7 to cover the top of the sample cup 3, harmful gases generated by evaporation in the sample cup 3 are collected by the recovery pipe 10, the smoke is purified and discharged by the activated carbon adsorption box 11 and the catalytic oxidation device 13, the device has simple structure and high practicability, can purify and discharge harmful gases generated by evaporation of the sample in the sample cup 3, and keep the sealing effect of the sample cup 3 when heated, avoid harmful gas emission, improve the operation safety of the operator, and improve the practicability of the device.

[0052] The above is only an embodiment of the utility model, and does not limit the patent range of the utility model, and any equivalent structure or equivalent process conversion by using the contents of the utility model specification and drawings, or direct or indirect application in other related technical fields, is also included in the patent protection range of the utility model.

Claims

1. An enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy, characterized in that, include: Liquid level laser emitter, laser receiver, and sample cup; A heating jacket is provided on the outer surface of the sample cup. A liquid level laser emitter is provided on one side of the outer surface of the sample cup, and a laser receiver is provided on the other side of the outer surface of the sample cup. A wind-cooled fan is provided on the top of one side of the outer surface of the sample cup. A pipette, wherein the pipette is disposed inside the sample cup.

2. The enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy according to claim 1, characterized in that, Both sides of the outer surface of the sample cup are fixedly installed with driving devices. The outer surface of the driving device is threaded with a protective device. The top of the outer surface of the sample cup is fixedly installed with a sealing connection device. The driving device includes a fixed block, a rotating part, a guide rod and a blocking block. The protective device includes a protective box, a sealing part and a threaded plate. The sealing connection device includes a storage box and a sealing groove.

3. The enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy according to claim 2, characterized in that, A recovery pipe is fixedly installed in the middle of the top of the protective device. An activated carbon adsorption box is fixedly connected to one end of the recovery pipe. A connecting pipe is fixedly connected to one side of the top of the activated carbon adsorption box. A catalytic oxidation device is fixedly installed at the other end of the connecting pipe. An exhaust pipe is fixedly connected to one side of the catalytic oxidation device. An air pump is installed on the surface of the exhaust pipe.

4. The enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy according to claim 2, characterized in that, The fixing block is fixedly installed on one side of the outer surface of the sample cup, the rotating component is fixedly installed on the bottom of the fixing block, the guide rod is fixedly connected to the top end of the output shaft of the rotating component, and the blocking block is fixedly installed on the top end of the guide rod.

5. The enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy according to claim 2, characterized in that, The threaded plate is threadedly engaged with the outer surface of the guide rod, the protective box is fixedly installed on one side of the outer surface of the threaded plate, and the sealing element is fixedly installed on the bottom of the outer surface of the protective box.

6. The enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy according to claim 2, characterized in that, The storage box is fixedly installed on the top of the outer surface of the sample cup, and the sealing groove is opened in the middle of the top of the storage box.

7. The enrichment device for detecting heavy metals in water using total reflectance X-ray fluorescence spectroscopy according to claim 2, characterized in that, The rotating component adopts a servo motor structure, the guide rod adopts a threaded rod structure, and the sealing component adopts a rubber gasket structure.

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