63 results about "Environmental water" patented technology

The invention relates to the technical field of water body sampling, in particular to a water environment water quality monitoring and sampling device for water body pollution tracing based on a multispectral unmanned aerial vehicle, which comprises an aircraft, a quantitative sampling device arranged below the aircraft and a recovery device for collecting a sampled water body, the quantitative sampling device comprises a sampling barrel, an upper floating part arranged above the sampling barrel, a rotating ring rotating along with the movement of the upper floating part, and a mounting part arranged at the top end of the butt joint part. According to the water environment water quality monitoring and sampling device for water pollution tracing based on the multispectral unmanned aerial vehicle, after the bottom of the sampling barrel moves downwards into the outer sleeve funnel along with the aircraft, a plate surface convex pipe jacks up the position of a liquid blocking plug, so that a collected water sample is poured into a sampling test tube, manual intervention is reduced, and meanwhile, the sampling efficiency is improved. The next round of water body collection work can be quickly carried out.

The utility model discloses an environment-friendly water treatment sample extractor which comprises a sample sampling part, a suction part and a stirring part, the suction part is fixedly arranged on the upper surface of a fixed bottom plate, and the stirring part can automatically stir sediments at the water bottom during water sampling; in order to solve the problems that in the prior art, common water sample sampling equipment can only sample a water body and cannot effectively sample pollution particles deposited at the water bottom when sampling work needing pollutant detection is carried out, a stirring part is designed, the stirring part and a sample sampling part are matched and synchronously used, so that the sampling efficiency is improved, and the sampling efficiency is improved. According to the environment-friendly particle pollutant sampling device, the stirring treatment can be automatically carried out when the environment-friendly particle pollutant sampling device goes deep into the water bottom for sampling, so that pollution particles deposited at the water bottom can be stirred, the particles are fully suspended, the pollution particles are simultaneously sampled during sampling, and the environment-friendly particle pollutant sampling device is particularly suitable for detecting and sampling environment-friendly particle pollutants.

The invention discloses an enrichment treatment device for fluorosulfide in a water body, and belongs to the technical field of water sample detection devices. The device provided by the invention can be suitable for sample collection and enrichment of water bodies in different environments such as rivers, lakes, seas and the like; through the adaptation of different pipelines, the device can be combined with an external gas chromatograph for use, so that the enrichment and treatment of trace volatile substances such as trace sulfur hexafluoride and trifluoromethyl sulfur pentafluoride in an environmental water body are realized; according to the device disclosed by the invention, the change of a flow path is realized by switching different valves, the device can realize the enrichment of a water sample in a target concentration range of 10 <-15 >-10 <-9 > mol / L, the enrichment of a trace target object to a trace target object is realized, and the sampling volume can be flexibly adjusted according to actual requirements. The device is simple in structure, convenient to operate and high in adaptability, can meet the detection requirements of different experimental platforms such as ashore and ship, and meets the requirements of different concentration ranges.

The invention discloses an environment-friendly water and soil loss monitoring method and device based on a target area. The method comprises the following steps: constructing a water and soil loss database corresponding to the target area; performing data pre-registration processing on the original ecological environment data of each target area to obtain standardized ecological environment data of the target area; performing erosion runoff coupling process simulation by using the standardized ecological environment data to obtain water and soil erosion dynamic parameters; performing water and soil loss trend prediction according to the water and soil erosion kinetic parameters to generate water and soil loss risk assessment data; data summarization is carried out according to the multi-source original ecological environment data, and an ecological management scheme is designed based on water and soil loss risk assessment data; performing treatment effect evaluation on the ecological treatment monitoring data in combination with a water and soil loss database, and dynamically evaluating the target difference between the current water and soil conservation rate and the water and soil conservation rate in different periods; and optimizing an ecological management scheme based on the generated ecological management optimization parameters. And the monitoring precision and the early warning timeliness are improved.

The application discloses an online enrichment detection system for particles and dissolved pollutants in water, which comprises a fly ash enrichment cavity, an interior of which is used for containing water, and a fly ash enrichment area between a liquid surface of the water and a top surface of the fly ash enrichment cavity; a bubble generating device arranged in the water in the fly ash enrichment cavity and used for generating bubbles for enriching particles and dissolved pollutants in the water; a gas sweeping device used for sweeping pure gas into the fly ash enrichment area and carrying away fly ash generated by the breaking of the bubbles; and a fly ash aerosol detection device used for detecting the concentration or particle size distribution of the particles in the fly ash and qualitatively and quantitatively analyzing the dissolved pollutants. The system can reliably detect low-concentration particles with a particle size of 6 nm or below in the water online, and qualitatively and quantitatively analyze the dissolved pollutants, so as to provide more accurate real-time water data for advanced chip manufacturing processes, environmental water detection, drinking water detection and industrial wastewater detection. The application further discloses an online detection method for particles and dissolved pollutants in water.

The present invention discloses an intelligent monitoring device and detection method for environmental water bodies, which specifically relates to water quality detection, including an exposed part respectively arranged on the top of a floating body and a water inlet at the bottom; a platform is arranged inside the floating body, a mounting frame is fixedly installed on the platform, and a mixed flow barrel is fixedly installed on the mounting frame; the mixed flow barrel is provided with: a dome, one end of which is in contact with the inner wall of the mixed flow barrel as a foot pattern annular groove, the inclined surface of the foot pattern annular groove faces the axis, and a flow blocking composite part with the same contour as the foot pattern annular groove is arranged in the foot pattern annular groove; a spiral heating element, which is used to receive liquid passing through the flow blocking composite part; wherein the flow blocking composite part includes a flow blocking group composed of a plurality of triangular ridge parts located in the same plane and with increasing circumferential radius. The invention fully takes into account the liquid mixing requirements during the reaction process to ensure the accuracy and reliability of the experimental results.

The invention discloses a water quality detection device for environmental water area detection, and relates to the technical field of water quality detection, the water quality detection device comprises a main body, an upper connecting plate and a lower connecting plate are respectively arranged on the upper and lower parts of the main body, and annularly distributed support legs are arranged on the outer side of the upper connecting plate; the buoyancy cabin is annular, is fixed between the upper connecting plate and the lower connecting plate and is fixed by the supporting legs, and a flexible air bag is arranged in the buoyancy cabin; the counterweight device is fixed at the middle upper part of the main body and positioned in the center of the main body; and the sampling detection device is fixed at the bottom of the lower connecting plate. The device integrates the functions of dynamic buoyancy adjustment, intelligent counterweight balance, multi-depth accurate sampling and real-time detection, and effectively solves the problems of poor stability, inaccurate sampling, detection lag and the like in the prior art.

The invention discloses a sampling device and a sampling method for environmental water quality detection, and belongs to the technical direction of water quality detection.The sampling device comprises a water quality detection sampler, a water inlet pipe is fixedly installed at one end of the outer portion of the water quality detection sampler, and three sets of sampling openings are formed in one end of the inner wall of the water quality detection sampler in an array mode; three groups of first water outlet pipes are installed at the other end of the exterior of the water quality detection sampler in an array mode, one ends of the three groups of first water outlet pipes are connected with three groups of first water pipes respectively, and a first water quality detection sensor, a second water quality detection sensor and a third water quality detection sensor are used in cooperation with equipment programs; water quality detection and sampling collection can be carried out on water bodies at different water levels in the water bodies to be detected, the water levels are different, the silt content in the water bodies is also different, detection and sampling values fluctuate, and the situation that sediment accumulated at the bottom of the water quality detection sampler influences data accuracy can be avoided.

The utility model discloses a water sample filtering device for environmental detection, which relates to the technical field of environmental water sample collection and comprises a sample cylinder, a top cover is fixedly arranged at the top of the sample cylinder, a servo motor is fixedly arranged in the center of the top of the top cover, and a vertical column is fixedly arranged at the output end of the servo motor. A horizontal rod is vertically and fixedly arranged at the bottom of the vertical column, an arc-shaped annular plate is fixedly arranged at the tail end of the horizontal rod, and the top of the side face of the sample cylinder fixedly communicates with a liquid feeding hopper. The arc-shaped annular plate is a filtering structure of the device and is rotationally arranged at the top of the sample cylinder through the servo motor, and when the filtering structure needs to be cleaned, the servo motor is started to move the filtering holes of the arc-shaped annular plate to the back-flushing assembly for back-flushing, and then the sample cylinder can be cleaned. And then the servo motor is used for driving the filtering hole to return to the initial position, and the filtering structure does not need to be detached from the sample cylinder, so that the downtime of the water sample filtering device is greatly reduced.

The application belongs to the technical field of ion detection, and particularly relates to a furan fused derivative material and application thereof in barium ion detection. In order to solve the problems of the prior art, such as complicated and complex detection, high cost, poor detection sensitivity, and unsuitability for real-time analysis, etc. in the detection of barium ions, the application provides a furan fused derivative material. The furan fused derivative material is used as an active layer of an OECT, a designed and synthesized azacrown-6 crown ether material is modified above the active layer, selectivity is provided by the azacrown ether, a full-plane barium ion sensor is prepared, and the purpose of real-time detection of barium ion concentration with rapidity, accuracy and high sensitivity can be achieved. The detection limit is as low as 10nM, which is superior to most of the currently reported barium ion sensors, and greatly meets the detection requirements of environmental water samples.

The utility model relates to the technical field of water body sampling, in particular to an environmental water body sampling device which comprises a device body, a sealing door is hinged to the upper surface of the device body, a fixing seat is fixedly connected to the lower end of the device body, and a sampling mechanism is fixedly connected to the lower surface of the fixing seat in a penetrating mode. A collecting mechanism is arranged in the device body and the fixed seat, and the collecting mechanism and the like are arranged in the device body and the fixed seat, so that the electromagnetic valve in the cleaning water pipe can be independently opened every time the water pump is used for sampling; and then cleaning liquid in the cleaning box is pumped through the water pump to clean the whole interior of the water distribution box and the interiors of the water pump and the sampling mechanism, cleaning is completed, it is guaranteed that no residual water sample pollutes next sampling, and therefore the sampling precision is improved, and the detection precision is improved.

This invention discloses a bifunctional fluorescent probe and method for simultaneously detecting hydroxyl radicals and iron ions, belonging to the field of analytical and environmental monitoring. The bifunctional fluorescent probe is prepared by adding a ruthenium complex [Ru(bpy)2(DA-phen)] during the synthesis of MOF-808. 2+ A one-pot method was used to prepare ruthenium complex-encapsulated MOF material, which is the bifunctional fluorescent probe MOF-808@Ru for the simultaneous detection of hydroxyl radicals and iron ions. This invention uses a zirconium oxide cluster as the metal center and trimesic acid as the bridging ligand, simultaneously encapsulating [Ru(bpy)2(DA-phen)]. 2+ A MOF-808@Ru composite fluorescent probe with dual recognition units was prepared. This probe enables in-situ visualization of endogenous ·OH and Fe in biological systems. 3+ In addition, it can also sensitively detect ·OH and Fe in environmental water samples. 3+ Furthermore, by using fluorescence imaging to dynamically reflect changes in Fenton's reagent during simulated wastewater treatment, it has broad application prospects in the field of environmental monitoring.

The utility model discloses an in-situ multi-point synchronous sampling and bottom mud disturbance resisting soil measuring structure, and particularly relates to the technical field of environmental water body detection, the measuring structure comprises a testing main body and a vertical shaft sleeve, the testing main body comprises a main body and a shell, the main body comprises a testing rod, testing units used for testing the salt content, the conductivity and the temperature of water are arranged on the testing rod at equal intervals, and the top end and the bottom end of each testing unit are isolated through a sealing section; a lead connected with the testing unit penetrates out of the top end of the testing rod through the sealing section; the casing comprises a drilling casing and a sleeving casing which are used for drilling a soil layer and protecting, the drilling casing is arranged at one section of the test rod, the main body is mounted in the sleeving casing, a plurality of uniformly distributed drill holes are formed in the sleeving casing, the drill holes correspond to the test units in position, and the drill holes are communicated with the casing. And water is permeated in the sleeve shell.

The invention discloses a quick response type near-infrared fluorescent probe for detecting Hg < 2 + >, a preparation method of the quick response type near-infrared fluorescent probe and application of the quick response type near-infrared fluorescent probe in actual water samples and biological imaging. The molecular formula of the fluorescent probe is C32H28N2O2S2. On the basis of a strategy of introducing phenothiazine heterocycle to expand xanthene pi conjugation, a large Stokes shift near infrared fluorescent probe for specifically recognizing Hg < 2 + > is constructed. An optical experiment shows that the emission wavelength of the probe for detecting Hg < 2 + > is 780nm, the Stokes shift reaches 166nm, and the probe has the advantages of high sensitivity (the detection limit is 13.4 nM), specificity, quick response (within 1s) and the like when being used for identifying Hg < 2 + >. Due to the excellent photophysical property, the fluorescent probe not only can be used for quantitatively detecting Hg < 2 + > in an environmental water sample, but also can be successfully applied to fluorescence imaging detection of Hg < 2 + > in cells and living bodies.

The invention provides a micro-plastic fluorescence detection method based on carbon quantum dots, and belongs to the technical field of environment detection. The method comprises the following steps: firstly, adjusting the pH value of a filtered water sample to be detected to 6.5-8.5 by adopting a buffer solution to serve as a marking medium; secondly, preparing a carbon quantum dot solution through an activated sludge hydrothermal method, mixing the carbon quantum dot solution with a water sample to be detected in a buffer system, and reacting for 0.25-24 hours under the conditions that the temperature is 25-45 DEG C and the pH value is 5.0-9.0 to finish fluorescence labeling. And finally, carrying out solid-liquid separation on the water sample solution, re-dispersing the separated solid substances in water, and carrying out observation and fluorescence intensity determination by using a fluorescence microscope or a fluorescence spectrophotometer so as to realize analysis of the microplastics in the environmental water sample. The method is green and environment-friendly, is rapid and stable in marking, shows good detection performance and high recovery rate in actual water samples such as river water and tap water, and provides an effective tool for rapid, simple and convenient detection of micro-plastics in the environment.

The invention discloses a method for rapidly detecting ammonia nitrogen in environmental water, which comprises the following steps: fixing alanine dehydrogenase (AlaDH) on the surface of core-shell Fe3O4 (at) Au nanoparticles to construct a biosensing membrane, and combining with an ammonium ion sensitive membrane consisting of polyvinyl chloride (PVC), sodium tetraphenylborate (NaTFPB), 2-nitrophenyl octyl ether (NPOE) and nonactin according to the mass ratio of 65.6: 0.6: 131.8: 2 to form an all-solid-state electrode. The detection lower limit reaches 0.05 mg / L, the linear range is 10 <-1 >-10 <-8 > M, the response time is only 100 seconds, the NH4 < + > selectivity coefficient (K < + > / NH4 < + >) is 0.01, and the anti-interference rate is lt; the signal attenuation rate is 1t after continuous use for 30 days; 5%. A potential-concentration logarithmic model is established through an open circuit potentiometry, and the ammonia nitrogen concentration in an environmental water body can be rapidly measured. The method is suitable for online monitoring of water bodies such as lakes, rivers and industrial wastewater, and an efficient and reliable technical means is provided for ammonia nitrogen pollution prevention and control.

The invention discloses a sampling device for environmental water quality detection, and relates to the technical field of water quality sampling, the sampling device comprises a water tank, the right side of the water tank is fixedly provided with a water pump, the rear part of the water pump is fixedly provided with a water suction port, and the top of the water pump is fixedly provided with a water inlet; a detection head is fixedly mounted at the bottom of the cross rod, a water outlet fixedly penetrates through the left side of the water tank, and a lifting device, a filtering device and a winding device are further included; wherein the lifting device comprises a motor, a first transmission shaft, a gear, a rack, a first short rod, a second short rod, an inclined plane block, an elastic telescopic rod and a sealing block, water sources with different depths can be detected, the accuracy of a detection result is ensured, floating objects on the water sources are prevented from influencing the detection result, and meanwhile the situation that the water sources are mixed due to the fact that the water sources detected last time are left in a water pipe is prevented; the accuracy of a detection result is ensured.

This invention provides a highly selective and sensitive fluorescent probe for mercury ions, its preparation method, and its applications, belonging to the fields of chemical sensing materials and environmental monitoring technology. This invention connects 4-(1,2,2-triphenylvinyl)phenol, which exhibits aggregation-induced emission, and a guanosine derivative with multiple coordination sites, via a flexible chain to obtain a fluorescent probe with the structure shown in Formula I. This fluorescent probe not only overcomes the problems of large differences in solubility and reactivity between 4-(1,2,2-triphenylvinyl)phenol and guanosine derivatives, making coupling difficult, but also possesses high sensitivity and selectivity; its detection limit reaches 12.24 nM, effectively detecting trace mercury pollution in samples. It can also accurately identify mercury ions in water samples containing multiple high concentrations of metal ions, demonstrating high accuracy in real water samples. It is suitable for the accurate determination of mercury ions in complex environmental water samples and has good practical application value in the field of environmental monitoring. Formula I

The invention relates to the field of analysis and detection, in particular to a fluorescent probe as well as a preparation method and application thereof. The fluorescent probe provided by the invention is prepared by carrying out condensation reaction on barbituric acid and 2-hydroxy-1-naphthaldehyde in a polar solvent, a carbon-carbon double bond formed by condensation of barbituric acid and 2-hydroxy-1-naphthaldehyde is used as a key pi bridge in a molecule, and a chromophore with a strong intramolecular charge transfer effect is jointly constructed; the fluorescent dye shows cyan appearance and strong green fluorescence in an aqueous solution. After specific reaction with hypochlorite, a conjugated skeleton and an ICT process of the whole molecule are destroyed, so that the color of a solution is changed from cyan to colorless, fluorescence is remarkably quenched, and'off-on 'type detection is realized. The probe has the advantages of quick response, high sensitivity and good selectivity, can be applied to qualitative and quantitative detection of hypochlorite in environmental water quality and biological samples, and supports test paper portable detection.

The present invention relates to the field of analytical chemistry, and particularly to a solid-phase microextraction probe based on metal-organic framework SU101, its preparation method, and its application in the trace detection of pharmaceuticals and personal care products in water environment. The solid-phase microextraction probe provided by the present invention has environmentally friendly materials and significantly stronger extraction ability than commercial probes, and has the advantages of low detection limit and quantification limit, wide linear range, good reproducibility, etc. Therefore, it can be used to detect extremely trace amounts of polar drugs in environmental water, especially glucocorticoid drugs.

The present application relates to the field of water quality detection, in particular to a method for analyzing aromatic organophosphate esters in water samples. At present, the method for detecting aromatic organophosphate esters in water environment is relatively blank, the present application uses sponge composite heteroporous covalent organic framework material, through vortex-assisted extraction, selectively enriches different sizes of aromatic organophosphate esters in water, and realizes the rapid determination of aromatic organophosphate esters in environmental water by combining ultra-high performance liquid chromatography-tandem mass spectrometry. The analysis and detection method developed by the present application not only selectively enriches a plurality of aromatic organophosphate esters in water through the heteroporous characteristics and strong hydrophobicity of the extraction material, effectively reduces the detection limit of the flame retardant in water, and reduces the sample pretreatment time, improves the analysis efficiency. The present application is suitable for water quality detection of ultratrace flame retardant.

The utility model discloses an environmental water source evaluation sampling device, which relates to the technical field of water source sampling and comprises a hollow upright post, and a sampling component is arranged on the outer side of the hollow upright post; the sampling assembly comprises a circular plate slidably connected to the inner wall of the hollow stand column, a long shaft is fixed to the bottom end of the circular plate, and four sets of guide inclined blocks are arranged on the outer wall of the curved surface of the long shaft in a stepped circumferential array mode. The handles on the two sides are rotated to enable the fixing columns to drive the sealing plugs to move in the direction away from the flow guide pipe, at the moment, a water source enters the sampling bottles through the flow guide pipe to be sampled, then the purpose of synchronous sampling of the sampling bottles in the four sets of storage boxes is achieved, sampling of water sources of different depths is effectively achieved, and the sampling efficiency is improved. The limitation that a traditional device can only sample a water source of a single depth is avoided, an operator only needs to adjust the immersion depth of the hollow stand column in water, water source sampling of multiple depths can be completed at a time through the device, and the sampling efficiency and accuracy are greatly improved.

The utility model relates to the technical field of water sample collection, and discloses an environmental water quality sample collection device which comprises a collection barrel and further comprises a partition plate connected to the upper portion of the inner wall of the collection barrel in a sliding mode, a water inlet hole is formed in the top of the partition plate, a connecting pipe is fixedly connected to the bottom of the partition plate, and the connecting pipe is communicated with the water inlet hole. The bottom of the connecting pipe is communicated with a water guide pipe; through the arrangement of the sample storage bottle, the water sample collection operation can be completed in water, so that the water sample can be conveniently and better collected, the possibility that the water sample is sprayed to the outside is reduced, the collection quantity of the water sample can be ensured for subsequent detection and analysis, and the problem that part of water quality sample collection devices at present are inconvenient to use when being used is solved. The problems that when a worker topples and transfers a water sample, the water sample is likely to be sprayed to the outside, the water sample collection amount is affected, and in the water sample transferring process, the normal water sample collection operation is likely to be affected by the toppling of a sampling bottle are solved.

The invention belongs to the technical field of environmental analysis chemistry and new material preparation, and particularly relates to a sulfuryl-containing covalent organic framework material as well as a preparation method and application thereof. The sulfuryl-containing covalent organic framework material (TpSD) is shown in the following formula I. The material disclosed by the invention is prepared from 1, 3, 5-trialdehyde phloroglucinol and 4, 4 '-diaminodiphenyl sulfone. The material is novel in structure, and shows the characteristics of large specific surface area, regular pore structure and high stability. In addition, a target object and sulfuryl in the material can form a hydrogen bond, so that the adsorption effect is further enhanced. The material can be applied to quantitative separation and enrichment of tetrabromobisphenol S derivatives in environmental water samples, can solve the problems of complex matrix interference and low sensitivity of detection instruments during analysis of trace organic matters in current environmental water samples, has stable properties, and can be reused.

The present invention discloses a sample pre-concentration and separation system and method for measuring trace substances in environmental water bodies, which belongs to the field of detection of trace gases dissolved in water bodies, and aims to solve the technical problem of low separation and sensitivity of single equipment in the prior art. It includes a gas injection module, a sample quantification module, a water sample pretreatment module, a capture and analysis module, and a separation and detection module. The present invention utilizes two sets of pre-column and analytical column systems to achieve the cascade separation of components with different properties. Substances with different separation activities can be effectively separated under flow switching, effectively avoiding confusion caused by similar functional groups, eliminating interference, and improving the separation and measurement sensitivity of the target object; at the same time, two sets of detectors are used to meet the needs of different sensitivity detection.

The utility model belongs to the technical field of filtering devices, and particularly relates to a filtering device for environmental water quality monitoring, which comprises a shell, a water inlet is fixedly connected to one side of the top of the shell, a paddle is rotatably connected to the interior of the shell and is positioned below the water inlet, a storage cavity is formed in the interior of the shell and is positioned below the paddle, and the storage cavity is communicated with the water inlet. A filtering assembly is arranged on the upper portion in the storage cavity, a stirring cavity is formed in the lower portion in the shell, and a stirring rod is rotationally connected to the interior of the stirring cavity; the utility model provides a filtering device for environmental water quality monitoring, and solves the problems that in the prior art, when water quality is monitored, a water source is generally filtered and purified through a filtering layer, but a deodorization step is not included in the purification process, the water source is stink due to the fact that part of the environment is severe, and if the water source is not subjected to deodorization treatment, the water quality cannot be monitored. The problem that stink in the sewage not only endangers the body health of workers, but also diffuses into the air to cause serious pollution to the air is solved.

The invention discloses a sample pre-concentration and separation system and method for measuring trace substances in an environmental water body, belongs to the field of detection of trace gas dissolved in a water body, and aims to solve the technical problems of low separation degree and sensitivity of single equipment in the prior art. The device comprises a gas sample introduction module, a sample quantification module, a water sample pretreatment module, a trapping analysis module and a separation detection module. According to the invention, two sets of pre-column and analytical column systems are utilized to realize echelon separation of components with different properties, substances with different separation activities can realize respective effective separation under flow path switching, confusion caused by similar functional groups is effectively avoided, interference is eliminated, and the separation degree and measurement sensitivity of a target object are improved; meanwhile, two sets of detectors are adopted, so that the detection requirements of different sensitivities can be met.

The invention discloses a power transmission and transformation project environmental water conservation problem analysis method and system based on spatial analysis. The method comprises the following steps: obtaining an associated geographic area of a construction line, then dividing sensitive areas to obtain sensitive patrol areas of different sensitive types, and determining protection grade parameters according to the sensitive types; collecting the spatial crossing and overlapping conditions of the construction lines and the sensitive patrol areas, and obtaining the line crossing information of each sensitive patrol area; and calculating a protection adjustment coefficient according to the line crossing information, endowing the protection adjustment coefficient of each sensitive patrol area with a corresponding protection level parameter to obtain a sensitive risk level, and performing early warning on the environmental water protection risk of each sensitive patrol area according to the sensitive risk level. And updating the corresponding line crossing information according to the construction period of each sensitive patrol area so as to re-determine the protection adjustment coefficient of each sensitive patrol area. According to the invention, different sensitive types of areas are monitored, data can be updated in time according to the construction period, and the accuracy of an analysis result is ensured.

The invention relates to the field of analytical chemistry, in particular to a magnetic nanometer COF material and application of the magnetic nanometer COF material to determination of PAEs plasticizers in water. The preparation method comprises the following steps: adding tetraethoxysilane into Fe3O4 magnetic nanoparticles to obtain Fe3O4 (at) SiO2 with a core-shell structure, carrying out amination to form NH2-Fe3O4 (at) SiO2, then adding DHA (docosahexaenoic acid), carrying out condensation to obtain Fe3O4 (at) SiO2 (at) DHA, and finally adding TAPOB to obtain Fe3O4 (at) TAPOB-COF. According to the method disclosed by the invention, a new pretreatment method is established on the basis of the self-made Fe3O4-coated TAPOB-COF, and efficient detection of six common PAEs in an environmental water body is realized. Through pretreatment after experimental optimization, the sensitivity is improved by 2-8182 times compared with that of a common method reported in literatures. The maximum adsorption capacities of the six substances, namely DMP, DEP, BBP, DBP, DEHP and DNOP, are 312 mu g / g, 500 mu g / g, 714 mu g / g, 128 mu g / g, 111 mu g / g and 620 mu g / g respectively. The material can be repeatedly used for more than 6 times, and can resist high temperature of more than 300 DEG C and weak acid and weak base solution environments, so that the material has a wide application prospect in the aspect of analysis and detection technology of environmental water containing PAEs.

The invention discloses a fluorescent probe for detecting hypochlorite as well as preparation and application of the fluorescent probe. The fluorescent probe disclosed by the invention has a structure as shown in a formula I. The fluorescent probe disclosed by the invention is simple in preparation method, and has relatively high sensitivity and selectivity to hypochlorite in an environmental water sample. Along with the increase of the concentration of hypochlorite in a solution, the fluorescence intensity of probe molecules at 470 nm is remarkably enhanced, the increase multiple of a fluorescence signal reaches 66 times, meanwhile, the color of the solution is changed from purple to yellow, and according to the phenomenon, the probe can also be used for detecting hypochlorite in the environment through a visual method. Therefore, the probe molecule provided by the invention has potential application value and can be applied to determination of hypochlorite in an actual water sample.