70 results about "Analysis water" patented technology

This invention relates to one rapid resolving photometric analysis water medium chemical oxygen volume testing method, which comprises the following steps: making H2SO4-H3PO4 mixture with proportion as 3:1-5:1; making catalytic agent MnSO4-CuSO4 with weight proportion as1:1-1:3; adding catalytic agent into the mixture of 100ml with catalytic agent weight as 0.25-0.40g with oxidation K2Cr2O7 concentration as0.10-0.25mol/L to make resolving liquid; adding the liquid into the dirty water with proportion 1:2-1:3 with resolving temperature as 150-170DEG C and time as10-20min; Measuring the water medium oxygen volume by adopting photometric meter online monitor through Cr on 590-610nm light.

The invention concerns an apparatus for analysing water chemistry. According to the invention, the apparatus is adapted to operate downhole and comprises a colouring agent supply device for supplying a colouring agent to a water sample, the colour of the water sample thus supplied being indicative of the water sample chemistry, and a colorimetric analyser arranged to determine the colour of the water sample.

The invention discloses a method for quickly and automatically analyzing the effective water resistance ratio of a bridge pier in a river channel, and belongs to the technical field of river dynamicsand hydrodynamic force influence demonstration of wading buildings. The method mainly comprises the following steps: firstly, preprocessing a watercourse shoreline terrain, determining an analysis water level and a reference water passing section, and calculating the total area of the water passing section; secondly, carrying out coordinate transformation by taking the water passing cross sectionas an axis, and projecting the top point of the bridge pier to the water passing cross section; thirdly, calculating the projection area of the bridge pier on the water passing section, calculating the effective water resistance ratio of the bridge pier by combining the total area of the water passing section, and drawing a water resistance section diagram; the method has the advantages that the defects that a method for calculating the effective water resistance ratio of the bridge pier in the river channel is complex in step, low in efficiency, high in accuracy influenced by skill proficiency of calculation personnel and the like are overcome, the method for quickly and automatically analyzing the effective water resistance ratio of the bridge pier in the river channel is provided, automatic calculation of the water resistance ratio of the bridge pier in the river channel is achieved, and efficiency and precision are improved.

The invention relates to a polycyclic aromatic hydrocarbonanalytical test method in the field of analytical chemistry, and concretely relates to a gas chromatography-mass spectrometry method applicable to quantitatively analyzing polycyclic aromatic hydrocarbon in an aquatic product. Aiming at a complex matrix of an animal-origin (aquatic product) food rich in fat, protein and macromolecular substances, the method comprises the steps of utilizing gel permeation chromatography for degreasing, then utilizing an aluminium oxide-silica gel compound chromatography purification column for effectively extracting the polycyclic aromatic hydrocarbon, utilizing gas chromatography and mass spectrometry for carrying out quantitative analysis, and building the GC-MS (Gas Chromatography-Mass Spectrometer) analysis method for quantitatively analyzing the polycyclic aromatic hydrocarbon in the aquatic product. Compared with an existing method, the method provided by the invention is higher in target compound recovery rate, beneficial for removing matrix interference, improving detection limit and reducing detection cost, and applicable to aquatic product safety evaluation, and the like.

The invention relates to a method for separation and enrichment of penicillin antibiotics in water. The method comprises the following steps of adjusting a pH value of a water sample to 2-4 by an acid; filtering the water sample to obtain a pretreated water sample; activating an HLB solid-phase extraction column by acetone, methanol and a formic acid aqueous solution containing ammonium acetate successively; adding ultrapure water to keep a resin in the HLB solid phase extraction column in an activated state; passing the water sample through the column; drying the HLB solid-phase extraction column under the protection of nitrogen after enrichment is finished; eluting with an eluent; collecting the eluent; blow-drying under a nitrogen flow; adding acetonitrile to dissolve residual materials for detection; and detecting the concentrations of penicillin antibiotics quantitatively. The method is advantageous in that the pretreatment of the water sample is environment-friendly; and the method can be operated easily, has high enrichment coefficient, low detection limit and good repeatability, and can analyze the content of two trace penicillin antibiotics in a water environment rapidly and accurately.

The invention generally relates to the measurement and predictions of conditions and contaminants; chemical, particulate and gaseous in and around water impoundments. More specifically, the invention relates to the use of an autonomous watercraft to analyze the chemical and physical properties of a body of water, such as a pond holding water used in a hydraulic fracturing operation.

A device and a method of analyzing total cyanide in water samples, including a mixing tube, a stripping tube, a sampling pipe, a reaction pipe, a peristaltic pump, an air pump, a UV digester, a heater, a condenser, a drain pipe and a water sample detector. The mixing tube, the stripping tube, the sampling pipe and the reaction pipe are respectively connected to the peristaltic pump. The mixing tube is connected to the reaction pipe. A bottom of the stripping tube, the air pump, the UV digester, the heater and the condenser and are sequentially connected. The condenser is connected to the mixing tube. An upper portion of the stripping tube, the sampling pipe and the reaction pipe are connected to the drain pipe. An absorbance of the water in the mixing tube is measured by the sample detector, and used to calculate the total cyanide content by spectrophotometry.

The invention relates to the technical field of water quality monitoring, and discloses a split-type water quality online monitoring device, which includes an information collection terminal and an information processing terminal. The information collection terminal includes a data collector, an output terminal of the data collector and a data analysis module. The input end is electrically connected, and the data analysis module includes water quality physical analysis, water quality chemical analysis and water quality biological analysis, and the output end of the data analysis module is electrically connected to the input end of the signal transmitter. The split-type water quality online monitoring device, by setting the heating tube, drops the water quality sample inside the collection tank, analyzes the data of various components in the water quality sample through the data analysis module, and then opens the valve to discharge the water quality sample from the drain pipe, and then Re-inject new water quality samples for monitoring, and the heating tube can dry the last monitored water quality samples in the collection tank to avoid mixing with new water quality samples, ensuring the accuracy of water quality sample monitoring.

The invention relates to river sudden water pollution analysis and risk map compiling method. The method is characterized by comprising the following steps: 1) setting a sudden water pollution scene;2) establishing a hydrodynamic water quality coupling model; 3) analyzing a simulation result, and 4) drawing a water pollution risk map. According to the method, risk source identification, numericalsimulation and accident early warning are integrated, water pollution indexes such as the time when a region is affected and the time when a pollution group reaches a specific section are accuratelysimulated, and technical support is provided for a water environment manager to make an emergency plan and post-process an accident.

The invention belongs to an analysis method in the field of environmental monitoring, and particularly relates to a method for evaluating the complexing degree of soluble organic matters and metal ions in a water body. According to the invention, the concentration change of bound metal after complexing of soluble organic carbon with different molecular weights and heavy metals in the water body isobserved through an equilibrium dialysis simulation experiment, the concentration of total metal ions in an equilibrium solution is determined through atomic absorption spectrometry, and the concentration of free metal ions is determined through an ion electrode, so that the complexing degree of the DOC and the heavy metals in the water body can be quickly obtained, the fluorescence peak intensity change of the components in the water body is determined through the fluorescence spectrometry, the change information of fluorescence quenching caused by complexing of the specific components of the DOC in the water body under different molecular weights and the heavy metals can be rapidly analyzed. The method has better accuracy for a large amount of detection.

The invention discloses a water pollution analysis method based on an ultraviolet visible spectrum and a three-dimensional fluorescence spectrum. The specific steps of the operation method are as follows: sampling water quality, namely carrying out multi-point sampling on an analysis water source through sampling equipment, and then preparing a polluted water sample and a purified water sample; collecting a three-dimensional fluorescence spectrum, namely irradiating multiple bottles of collected water samples, polluted water samples and purified water samples through ultraviolet rays to reflect fluorescence signals, and enabling the fluorescence signals to generate the three-dimensional fluorescence spectrum through a diffraction grating; converting a three-dimensional fluorescence spectrum, namely converting the three-dimensional fluorescence spectrum into an electric signal through a CMOS chip so as to obtain three-dimensional fluorescence spectrum data in the form of the electric signal; processing the three-dimensional fluorescence spectrum data, namely preprocessing the three-dimensional fluorescence spectrum data. The method is reasonable in design and accurate in analysis, the three-dimensional fluorescence spectrum data can be corrected, the accuracy of sewage analysis data is well guaranteed, and a certain scientific basis is provided for a water pollution treatment method.

The invention relates to an underwater drilling device and a method for obtaining and analysing soil samples of the bed of a body of water. An underwater drilling device with a base frame is lowered in a body of water and placed on the bed of a body of water. With a drilling drive that is mounted on the base frame and able to move vertically, a drill string consisting of at least one tubular drill string element is drilled into the bed of the body of water in a first drilling step, wherein a core sample is accommodated in a holder in the tubular drill string element. The holder with the core sample is stored in a storage location of a second storage region on the base frame. Subsequently, at least one further drilling step is carried out with a further drill string element. By means of at least one sensor device arranged on a base frame in a surrounding area of the drilling axis, at least one physical and/or chemical property of the core sample is determined. The data thus determined is saved in a data processing device together with data relating to the storage location of the core sample in the second storage region.

The invention provides a novel method for analyzing the triazole pesticide residue in water based on bubbling-assisted demulsification-eutectic solvent aqueous two-phase system. According to the basicconcept of the invention, carbon dioxide bubbling-assisted demulsification is fully utilized, so that an emulsion can be quickly clarified without using additional centrifuging equipment; the eutectic solvent aqueous two-phase system has the advantages of environment friendliness, good biocompatibility, low cost, fast phase formation, high extracting efficiency and the like; based on the advantages of the two, the bubbling-assisted demulsification and the eutectic solvent aqueous two-phase system are combined, so that the demulsification effect is obvious and the operation is simple, safe andenvironmentally friendly; the method is applicable to enrichment of a relatively low-concentration compound in water as well as analytic determination based thereon.

The invention provides a water quality monitoring and improving device based on a watercourse ecological revetment and a method thereof. The water quality monitoring and improving device comprises a plurality of water quality improving devices and water quality monitoring devices which are arranged on the ecological revetment at intervals. Each water quality improving device comprises a support device, a work box, a sediment stirring device, an aeration device, a chemical adding device and a collection device. Each water quality monitoring device comprises a sampling device, a water quality analyzer and a processing controller, wherein the sampling device is arranged below the corresponding work box to be used for obtaining a water sample in a watercourse, the water quality analyzer is arranged in the work box and is used for analyzing data of the water sample, and the processing controller is connected with the water quality analyzer and the corresponding water quality improving device and is used for controlling the water quality improving device to improve water quality according to the data of the water sample. In conclusion, the water quality monitoring and improving device based on the watercourse ecological revetment and the method thereof have the advantages of being novel in structure, perfect in process, good in improving effect and the like.

The invention discloses an SYBR-Green fluorescent quantitative RT-PCR (reverse transcription-polymerase chain reaction) detection method for Microcystis aeruginosa phycophages in a water environment, belonging to the field of molecular biology. In the invention, based on the g91 segment of the tail sheath protein gene of Microcystis aeruginosa phycophages Ma-LMM01, Premier5.0 and Oligo6 software are used to design quantitative PCR external standard primers SH-WF and SH-WR and quantitative PCR primers SH-RTF and SH-RTR, and the primers are used to detect the quantity of Microcystis aeruginosa phycophages in a water environment, thereby analyzing the law that the quantity of Microcystis aeruginosa phycophages in the water varies with time and space.

The invention discloses a capillary network radiation refrigeration air conditioning system and an anti-dewing method. The capillary network radiation refrigeration air conditioning system is characterized in that a spraying device (2), an absorption tower (3) and less auxiliary devices are only additionally arranged; an absorption/analysis water steam principle of absorption type working pairs isfully utilized, operation pressure, temperature and flow conditions of the absorption type working pairs are controlled, the cooling capacity is provided for capillary network radiation refrigerationcirculation distributed in a room (5) through an evaporator (7), and simultaneously, the natural air with higher outdoor temperature and humidity can be firstly dehumidified by utilizing the absorption type working pairs, and then the dehumidified natural air (21) can be pre-cooled by utilizing frozen water (23) formed in an outlet of the evaporator (7), is then fed into the room and is used as fresh air. Compared with relatively-conventional air conditioning adopting an independent capillary network radiation refrigeration and independent fresh air system, the method disclosed by the invention is simple to operate, and can avoid the dewing problem of conventional capillary radiation refrigeration tube network, and therefore, the method is particularly suitable for energy-saving reconstruction of the area radiation refrigeration air conditioning with higher humidity and temperature, and is also suitable for being used in occasions on which the temperature and the humidity need to be accurately controlled.

The invention belongs to the technical field of environmental analysis, and particularly relates to a method for analyzing the influence of humic acid in a water body on the lead adsorption process and the mechanism, the influence behaviors of humic acid on Pb < 2 + > adsorption of micro-plastic under different conditions are elaborated through adsorption kinetics and adsorption isothermal research, and the adsorption mechanism of the micro-plastic on Pb < 2 + > is disclosed by combining the energy distribution characteristics of the sites; the influence of humic acid on the combination process of the micro-plastic and Pb < 2 + > is analyzed and discussed through fluorescence quenching of humic acid, and the process and mechanism of humic acid for promoting the micro-plastic to adsorb Pb < 2 + > are disclosed; the method is simple in operation steps, can systematically analyze the Pb < 2 + > adsorption behavior of the micro-plastic from different angles, provides a scientific basis for effective control of the micro-plastic and lead (Pb (II)) in a water body environment, and has a relatively great application prospect.

The invention discloses a method for rapidly determining sulfonamide antibiotics in water through full-automatic online extraction and ultra-high performance liquid chromatography-tandem mass spectrometry, and belongs to the technical field of analysis and detection. According to the method, specific full-automatic on-line solid-phase extraction conditions are matched with specific ultra-high performance liquid chromatography-tandem mass spectrometry conditions, so that sample enrichment, purification, separation and determination are realized, and 15 sulfonamide antibiotics in water are analyzed in a full-automatic manner. The method is convenient, efficient and rapid, all analysis steps are automatically completed by an instrument only after a sample is filtered, full-automatic operation is achieved, the whole determination time is only 17 min, the detection limit reaches the ng/L level, the common matrix effect problem in complex matrix sample analysis is solved in the mode of purifying an online solid-phase small column through methanol/pure water, and the ultra-trace detection requirement of the sulfonamide antibiotics in the water is met.

The invention particularly relates to an adsorbent and a preparation method and application thereof, and belongs to the technical field of analysis and detection.The method comprises the steps that mesoporous carbon nitride (MCN) is obtained; dissolving the MCN in a first solvent to obtain a magnetic mesoporous carbon nitride (MCN) solution; mixing the MCN solution with CoCl2. 6H2O and FeCl3. 6H2O, and then carrying out pH (Potential of Hydrogen) regulation, so as to obtain a mixed solution; and reacting the mixed solution to obtain the adsorbent. The MCN/CoFe2O4 magnetic solid-phase extraction adsorbent is prepared through a hydrothermal synthesis method, MCN/CoFe2O4 serves as an MSPE adsorbent, high performance liquid chromatography-variable wavelength detection is combined, a new method for analyzing bisphenol estrogens (BPs) in the water environment is established, BPs in the water environment can be simply, efficiently and economically analyzed, a new thought is provided for enrichment and purification of organic pollutants in the water environment, and the method has a wide application prospect. And the bottleneck of BPs sample pretreatment is broken through.

The invention relates to the technical field of feeding devices, in particular to an accurate feeding system and method applied to recirculating aquaculture, and the method comprises the following steps: a feeding step: obtaining a feeding tentative amount, and feeding according to the feeding tentative amount; a residual feed analysis step: analyzing the water surface image after feeding in real time, and judging whether residual feed exists on the water surface or not according to the water surface image; an aggregation analysis step: when no residual feed exists on the water surface, analyzing the water surface image to generate the aggregation degree of the cultured organisms, and generating the feeding amount according to the aggregation degree; the feeding step further comprises the step of feeding according to the feeding amount; and repeating the residual feed analysis step and the aggregation analysis step. By adopting the scheme, the feeding amount can be controlled for feeding according to the ingestion intensity of the cultured organisms, so that accurate feeding is realized, and the technical problem that the breeding cost is increased due to improper feeding in recirculating aquaculture in the prior art is solved.

The invention relates to a method for identifying whether rainwater is introduced into sewage, which can quickly judge whether the rainwater is introduced into a sewage inspection well in a mixed or staggered manner. The method comprises the steps of 1 collecting and pretreating a water sample; 2 carrying out three-dimensional fluorescence spectrum detection on the water sample to obtain a three-dimensional fluorescence spectrogram of the water sample; and 3 analyzing the three-dimensional fluorescence spectrogram of the water sample to judge whether rainwater enters the sewage inspection well or not. The method is simple and rapid to operate, reliable and economical, and can be widely used for judging whether the rainwater is introduced into the sewage inspection well in a mixed or staggered manner.

The invention provides a method for determining bensulfuron methyl in water by a boron trifluoride derivation-gaschromatographic mass spectrometry method, which is applicable to analyzing the bensulfuron methyl in various water bodies. The method takes the BF3 as a derivation agent to accelerate the bensulfuron methyl to react to generate a derived organic matter with a lower boiling point, which is suitable for gaschromatographic mass spectrometry analysis; and then the gaschromatographic mass spectrometry is used for analyzing the derived organic matter to determine the content of the bensulfuron methyl. According to the method disclosed by the invention, the influences on interference components in a sample can be reduced, a base line adjacent to a chromatographic peak of the bensulfuron methyl is stable and the inferences are smaller; 1L of a large-volume sample is extracted and then is concentrated and analyzed, so that the detection limitation of the method is very low and the sensitivity of derived products is higher; and therefore, the detection limitation of the bensulfuron methyl is lower, the detection limitation of the method is 0.1ng/L through calculation, needed materials and equipment are simple and the analyzing cost is low.