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45 results about "Organophosphorous pesticide" patented technology
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Preparation for detecting organophosphorus pesticide residual test paper and its use method
InactiveCN101299029AEasy to prepareEnzyme richMaterial analysis by observing effect on chemical indicatorMicrobiological testing/measurementBiotechnologyCholinesterase
The present invention discloses a preparation method of a test paper for testing the residual organphosphorous pesticide and a using method thereof, wherein the preparation method comprises the following procedures: (1) preparing acetylcholine esterase with fresh blood of hen or female duck as raw material; (2) fixing the acetylcholine esterase on the filter paper; (3) slicing when the filter paper is frozen and dried. A substrate liquid, a color developing liquid and a sensitization liquid are provided. The principle is that the inhibition of the organphosphorous pesticide which is processed by the sensitization liquid to the acetylcholine esterase in the chicken or duck blood serum to make that the substrate of naphthyl acetate of the acetylcholine esterase can not be decomposed thereby that the displayed colors are not consistent when the fast blue B is added into to obtain the purpose of determining whether the sample contains the residual organphosphorous pesticide. The method of the invention has the advantages of low cost, simple and fast operation. The method is suitable for determining whether the residual organphosphorous pesticide exists in vegetable, fruit and food on-site.
Owner:GUANGXI ACAD OF SCI
Organic phosphorus pesticide bionic identification test reagent kit
InactiveCN1773287AHigh sensitivityLess restrictiveChemiluminescene/bioluminescenceBiological testingFluorescencePolystyrene
Owner:THE FIRST INST OF OCEANOGRAPHY SOA
Cationic cyclodextrin-based hydrogel adsorbing material and synthetic method thereof
ActiveCN111992181APromote swellingHigh mechanical strengthOther chemical processesWater contaminantsMeth-Cyclodextrin
The invention discloses a cationic cyclodextrin-based hydrogel adsorbing material and a synthetic method thereof. The synthetic method of the material comprises the following steps of: mixing beta-cyclodextrin with 2, 3-epoxypropyl trimethyl ammonium chloride according to a certain ratio; continuously stirring in an alkaline solution; completing beta-cyclodextrin cationization so as to obtain a beta-cyclodextrin cationic derivative, carrying out a free radical polymerization reaction on the beta-cyclodextrin cationic derivative, acrylamide (or acrylic acid) and methylene bisacrylamide, synthesizing a gel substance at one time, and drying, thereby obtaining the cationic cyclodextrin-based hydrogel adsorbing material. The material has a good adsorption effect on organic pollutants such as phosphorus flame retardants, anionic dyes and organophosphorus pesticides in water, is easy to prepare, has excellent swelling performance, is good in stability within the pH range of 3-11 and high in ion interference resistance, can be regenerated and recycled for multiple times, does not cause secondary pollution and has a great application prospect.
Owner:BEIJING FORESTRY UNIVERSITY
Pesticide wastewater dephosphorizing agent
ActiveCN104098166AReduce phosphorus contentEasy to handleWater/sewage treatment by flocculation/precipitationWater/sewage treatment by sorptionSorbentPhosphate
Owner:临安天川环保科技有限公司
Immune colloidal gold test strip for detecting organic phosphorus pesticide and preparation method thereof
InactiveCN104034886AEasy to operateEasy to detectMaterial analysisPesticide residuePolyvinyl chloride
The invention discloses an immune colloidal gold test strip for detecting organic phosphorus pesticide and a preparation method of the test strip, and belongs to the technical field of pesticide detection. The test strip comprises a PVC (Polyvinyl Chloride) backing, a sample pad, a colloidal gold combining pad, a detection line, a quality control line, a nitrocellulose membrane and a water absorbing pad, wherein the colloidal gold combining pad is wrapped by a universal organic phosphorous pesticide antibody marked by colloidal gold; conjugate of universal organic phosphorous pesticide hapten and carrier protein is sprayed on the detection line; an anti-mouse or anti-rabbit IgG antibody is sprayed on the quality control line. The test strip has the characteristics of high specificity, high sensitivity, good repeatability and the like, and can be popularized and applied to organic phosphorus pesticide residue detection on vegetables, fruits and the like.
Owner:GUANGXI DOCTOR HAIYI INFORMATION TECH
Diethoxy thiophosphate organophosphorus pesticide hapten and preparation thereof
ActiveCN101475587AProduce high potencyStrong specificityGroup 5/15 element organic compoundsMaterial analysisPhosphoric Acid EstersCarboxyl radical
The invention discloses a diethoxy phosphorothioate organic phosphorus pesticide haptens and a method for preparing the same. The haptens are products of nucleophilic substitution of diethylthiophosphoryl chloride and phenol derivates with a carboxyl or an amine acid. The invention provides a series of haptens aiming at a common structure of the organic pesticides of diethoxy phosphorothioate. The haptens are similar to the counterparts of organic pesticides having a common structure of the diethoxy phosphorothioate in terms of molecular structure, stereochemistry and electron distribution, wherein phenol derivative arms which have carboxyls and vary in length are introduced onto the oxygen atoms of the diethoxy phosphoramide to be bound with carrier proteins. The haptens and the metod lay a technical foundation for the preparation of antibodies of diethoxy phosphorothioate organic phosphorus pesticides and the development of quickly testing products.
Owner:SOUTH CHINA AGRI UNIV
Preparation method and application of electrochemical biosensor based on three-dimensional nano-porous gold-modified boron-doped diamond electrode
InactiveCN104034777AImprove conductivityLarge specific surface areaNanosensorsMaterial electrochemical variablesElectrochemical biosensorDiamond electrodes
The invention discloses a preparation method and application of an electrochemical biosensor based on a three-dimensional nano-porous gold-modified boron-doped diamond electrode, and in particular relates to a preparation method of a boron-doped diamond electrode, a fixation method of acetylcholin esterase and application of acetylcholin esterase in organophosphorus pesticide residue detection for solving the technical problem that the boron doped diamond membrane electrode has low electrocatalytic activity, difficulty in surface reengineering and poor selectivity and sensitivity. The method comprises the following steps: 1, preparing three-dimensional nano-porous gold on the boron doped diamond electrode and modifying the boron doped diamond electrode; 2, fixing acetylcholin esterase on the three-dimensional nano-porous gold modified boron doped diamond electrode modified by the step 1 to construct the electrochemical biosensor. The electrochemical biosensor adopting the technical scheme is used for fixing the acetylcholin esterase and is used for electrochemical detection of organophosphorus pesticide residues, and the method can be used for increasing the specific surface, accelerating electron transfer, improving the electrocatalytic activity and improving the detection sensitivity.
Owner:HENAN UNIVERSITY OF TECHNOLOGY
Molecular imprinting composite membrane for organophosphorus pesticide detection and application of membrane
InactiveCN103172899AEasy to prepareHigh selectivityOther chemical processesColor/spectral properties measurementsFunctional monomerPorphyrin
The invention discloses a molecular imprinting composite membrane for organophosphorus pesticide detection and application of the membrane. An organophosphorus pesticide is taken as a template molecule, and metalloporphyrin is taken as a functional monomer to prepare the molecular imprinting composite membrane. A preparation method of the molecular imprinting composite membrane is simple, and three-dimensional holes formed in the molecular imprinting composite membrane are specific in identifiability and can only be combined with template molecules of a specific structure, so that the molecular imprinting composite membrane provided by the invention has higher selectivity to the corresponding template molecules and can be used for rapid detection of organophosphorous pesticides.
Owner:CHONGQING UNIV
Method for using tea extract as underwater organophosphorus pesticide chlorpyrifos treatment agent
ActiveCN103382062AReduce usageReduce consumptionMultistage water/sewage treatmentChlorpyrifosOptical processing
The invention discloses a method for using a tea extract as an underwater organophosphorus pesticide chlorpyrifos treatment agent. The method comprises the steps of: placing a tea extract EGCG directly into sewage, using a high pressure mercury lamp to irradiate, adding a complexing agent into the sewage irradiated by the high pressure mercury lamp, and filtering out the generated precipitate. The treatment agent involved in the invention has the advantages of naturality, environmental protection, low dosage, convenient use and operation, low operation cost, high efficiency, low environmental pollution, wide application scope, no influence on running and operation of the system itself, stability under environmental condition change, no need for a special production process, direct preparation, and no harm to the human body and other living things, and can substantially save energy when it is used in optical processing technologies.
Owner:ANHUI AGRICULTURAL UNIVERSITY
Analysis method for organic phosphorus pesticide open hole visualized semi-quantitative detection
InactiveCN107064134AHave multicolor propertiesSuitable for semi-quantitative visual analysisMaterial analysis by observing effect on chemical indicatorColor/spectral properties measurementsDiameter ratioChromogenic
The invention provides an analysis method for an organic phosphorous pesticide open hole visualized semi-quantitative detection, and belongs to the technical field of rapid organic phosphorous pesticide detection. According to the analysis method, an AuNRs is used as the chromogenic reagent, wherein the AuNRs has an anisotropic surface plasmon resonance property, in the process of the length-diameter ratio of the AuNRs decreasing from 4.0 to 1.0, the AuNRs displays a series of observable color changes from brown to gray, green, blue, purple, pink and the like. Therefore, a relationship is established between the dissolving reaction of the AuNRs in an Au3+ solution and the pesticide inhibition and hydrolysis reaction of an AChE, and through the color changes of the AuNRs in the dissolving process, the semi-quantitative visualized detection of the organic phosphorus pesticide content can be achieved. The chromogenic reagent has a multicolor property, and every color is corresponding to a concentration of the organic phosphorus pesticide, so that the chromogenic reagent is applicable to the semi-quantitative visualized detection of the organic phosphorus pesticide in a certain range.
Owner:DALIAN UNIV OF TECH
Method for applying porous Co3O4 peroxidase to rapid colorimetric detection of glyphosate
PendingCN112964706AHigh detection sensitivityGood choiceMaterial analysis by observing effect on chemical indicatorPeroxidasePesticide residue
The invention discloses a method for applying porous Co3O4 peroxidase to rapid colorimetric detection of glyphosate. The method comprises the following steps: (1) uniformly mixing a sample containing glyphosate with a porous Co3O4 solution with the concentration of 1 [mu]g / mL, and incubating at 30 DEG C for 10 minutes; and (2) adding a NaAc buffer solution with the pH value of 6.0 and the concentration of 5 mM, H2O2 with the concentration of 8 mM and a TMB substrate solution with the concentration of 1.5 mM into the mixed solution, carrying out chromogenic reaction for 10 minutes, and determining the content of glyphosate by measuring the change of a light absorption value of the mixed solution at 650 nm. The lowest detection limit of glyphosate is 2.37 [mu]g / L, and the method has the advantages of being good in detection specificity, capable of being distinguished by naked eyes, easy and convenient to operate and the like, can achieve rapid detection of glyphosate pesticide residues without depending on large instruments, and can be widely applied to detection of organophosphorus pesticides in agricultural products.
Owner:贵阳海关综合技术中心
detergent composition
ActiveCN108841463BImprove stabilityAvoid cloggingInorganic/elemental detergent compounding agentsOrganic detergent compounding agentsPesticide residueActive agent
Owner:GUANGZHOU LIBY
High-activity methyl parathion hydrolase mutant and use thereof
InactiveCN104726426AHigh catalytic activityImprove catalytic performanceBacteriaHydrolasesMethyl parathionCleansing Agents
The invention discloses high-activity methyl parathion hydrolase and a use thereof. Compared with the existing methyl parathion hydrolase, the recombinant methyl parathion hydrolase obtained by site directed mutagenesis design and screening has substantially improved activity, and has a good capability of degrading organophosphorus pesticide such as methyl parathion. A fruit and vegetable pesticide cleaning agent prepared from the methyl parathion hydrolase has effects better than those of the same kind products on the market. The high-activity methyl parathion hydrolase can be used for removing pesticide on fruits and vegetables, tea and traditional Chinese medicine raw materials in processing, can be used in soil restoration and has a wide application prospect. The invention also discloses a preparation method of the recombinant methyl parathion hydrolase.
Owner:BIOTRAND
A mesoporous cellulose biochar composite material loaded with magnetic ferromanganese oxide and its preparation method and application
ActiveCN108704611BWide variety of sourcesLow priceOther chemical processesWater contaminantsCelluloseGlyphosate
Owner:SOUTH CHINA UNIV OF TECH
Method for improving laccase activity for organophosphorus pesticide degradation
InactiveCN110669742AIncrease productionEasy to synthesizeFungiMicroorganism based processesVeratryl alcoholTyrosine
The invention relates to the technical field of pesticide degradation and particularly relates to a method for improving the laccase activity for organophosphorus pesticide degradation. The method comprises the following steps: (1) activating a culture; (2) culturing a seed solution; (3) performing fermentation enzyme-production culture; and (4) preparing a crude enzyme solution. According to a fermentation culture medium, maltodextrin is used as a carbon source, corn protein and peptone are used as a complex nitrogen source, and substances capable of promoting laccase synthesis and secretionof trametes cinnabarina, such as tyrosine, salicylic acid, diethylaminoethyl hexanoate, catechin, veratryl alcohol, a fullerene aqueous solution, spermidine and tween-80, are added into the culture medium, feed-batch and pH regulation are performed in the fermenting process, and an optimized production process for producing laccase by trametes cinnabarina liquid fermentation is established, so that the aims of improving the activity and yield of laccase and reducing the production cost of laccase can be achieved, and foundation is laid for industrial production of laccase and application in the field of pesticide degradation in the future.
Owner:孙芳
Preparation method of organophosphorus degrading enzyme-based multifunctional catalyst, organophosphorus degrading enzyme-based multifunctional catalyst and application of organophosphorus degrading enzyme-based multifunctional catalyst
ActiveCN111690637ALow purity requirementFix stability issuesHydrolasesOrganic compound preparationBiotechnologyPtru catalyst
The invention provides a preparation method of an organophosphorus degrading enzyme-based multifunctional catalyst, the organophosphorus degrading enzyme-based multifunctional catalyst and applicationof the organophosphorus degrading enzyme-based multifunctional catalyst. The preparation method comprises the following steps: a composite yolk shell structure nano material is directly added into crude enzyme liquid of organophosphorus degrading enzyme with an affinity label, mixed and separated, and then the organophosphorus degrading enzyme-based multifunctional catalyst is obtained. The preparation method of the organophosphorus degrading enzyme-based multifunctional catalyst is easy to operate, the requirement for the enzyme purity is low, the carrier can be directionally combined with the enzyme, the prepared organophosphorus degrading enzyme-based multifunctional catalyst is low in cost, an organophosphorus pesticide can be detected, the organophosphorus pesticide can be further degraded in a cascade mode, and a final product, namely p-aminophenol has important application value.
Owner:HEBEI UNIV OF TECH
Nano-drug as well as preparation method and medical application thereof
ActiveCN112190715AHigh drug loadingGood biocompatibilityOrganic active ingredientsMaterial nanotechnologyAptamerCholesterol
The invention belongs to the field of medicine, and particularly relates to a nano-drug. The nano-drug comprises liposome and cholesterol molecule modified aptamer; the cholesterol molecule modified on the aptamer is partially inserted into the liposome, the aptamer is the aptamer of a transferrin receptor, and an acetylcholinesterase heavy activator is wrapped in the liposome, wherein the molar ratio of the liposome to the cholesterol molecule modified aptamer is (5-150): 1; the liposome comprises the following components in parts by molar weight of 25-120 parts of phospholipid, 0.5-30 partsof distearoyl phosphatidyl ethanolamine-polyethylene glycol and 3-45 parts of cholesterol. The invention also relates to the preparation method and application of the nano-drug. The nano-drug disclosed by the invention can be specifically combined with the surface of BBB, effectively penetrates through a blood-brain barrier and releases the drug in the center, and the nano-drug is high in drug loading capacity, good in biocompatibility, high in bioavailability and free of cytotoxicity, and can be used for military protection for treating organophosphorus pesticide poisoning and nerve poisoningagent attack.
Owner:ACADEMY OF MILITARY MEDICAL SCI
Hydroxyl-containing microporous organic polymer organophosphorus pesticide biosensor and preparation method
InactiveCN110672690AEasy to makeEasy to manufactureMaterial analysis by electric/magnetic meansMethyl parathionOragene
The invention provides a hydroxyl-containing microporous organic polymer organophosphorus pesticide biosensor and a preparation method thereof. The biosensor comprises a carbon paste electrode, an acetylcholin esterase layer and a Nafion layer, and modified layers on the surface of the carbon paste electrode are sequentially a Hy-MOP layer, an acetylcholin esterase layer and a Nafion layer from inside to outside. The biosensor provided by the invention has better enzyme immobilization capability and good biocompatibility and has higher sensitivity and stability. Hy-MOP suspension, AChE solution and Nafion solution are sequentially fixed on the carbon paste electrode, so that the organophosphorus pesticide biosensor is constructed. The biosensor provided by the invention can be used for detection on methyl parathion and paraoxon and is low in cost, easy to operate, high in sensitivity and good in selectivity, and linear detection ranges of the methyl parathion and paraoxon are respectively 5.0*10<-13>-1.0*10<-8>g / mL and 1.0*10<-13>-1.0*10<-9>g / mL.
Owner:XI'AN UNIVERSITY OF ARCHITECTURE AND TECHNOLOGY
Molecular imprinting composite membrane for organophosphorus pesticide detection and application of membrane
InactiveCN103172899BEasy to prepareHigh selectivityOther chemical processesColor/spectral properties measurementsFunctional monomerPorphyrin
The invention discloses a molecular imprinting composite membrane for organophosphorus pesticide detection and application of the membrane. An organophosphorus pesticide is taken as a template molecule, and metalloporphyrin is taken as a functional monomer to prepare the molecular imprinting composite membrane. A preparation method of the molecular imprinting composite membrane is simple, and three-dimensional holes formed in the molecular imprinting composite membrane are specific in identifiability and can only be combined with template molecules of a specific structure, so that the molecular imprinting composite membrane provided by the invention has higher selectivity to the corresponding template molecules and can be used for rapid detection of organophosphorous pesticides.
Owner:CHONGQING UNIV
Method for detecting pesticide residues based on ratio fluorescence and colorimetric dual modes of ACP (at) Ce/Tb-IPA
ActiveCN114518344AEnables dual-mode indirect detectionLow detection limitMaterial analysis by observing effect on chemical indicatorColor/spectral properties measurementsPesticide residueFluorescence
The invention belongs to the technical field of analytical chemistry, and relates to a method for detecting pesticide residues based on ratio fluorescence and colorimetric dual modes of ACP (at) Ce / Tb-IPA, which comprises the following steps: adding 50 [mu] L of 1mg / mL ACP (at) Ce / Tb-IPA dispersion liquid into a centrifuge tube, adding organophosphorus pesticide paraoxon with different concentrations, and incubating for 30 min; continuously adding 930 [mu] L of a NaAc-HAc solution and 20 [mu] L of an AAP solution, measuring fluorescence, and drawing a standard working curve taking the paraoxon concentration as a horizontal coordinate and the emission wavelength intensity ratio at 496 nm to 358 nm as a vertical coordinate; adding 30 [mu] L of a TMB solution into the mixed system, measuring the absorbance, and drawing a standard working curve with the paraoxon concentration as the abscissa and the absorbance at 652 nm as the ordinate; after the sample to be detected is treated in the same way, the detected numerical value is compared with the working curve, and the concentration can be obtained. According to the present invention, by using the specific triggering inhibition of the ACP activity and the potential influence of the by-product on the ACP (at) Ce / Tb-IPA oxidase and the luminescence characteristic, the dual-mode indirect detection of the pesticide residue is achieved, and the huge application potential is provided in the field of the pesticide residue detection.
Owner:JIANGSU UNIV
A kind of cationic cyclodextrin-based hydrogel adsorption material and synthesis method thereof
ActiveCN111992181BPromote swellingHigh mechanical strengthOther chemical processesWater contaminantsMeth-Cyclodextrin
The invention discloses a cationic cyclodextrin-based hydrogel adsorption material and a synthesis method thereof. The method for synthesizing the material is to mix β-cyclodextrin and 2,3-epoxypropyltrimethyl ammonium chloride according to a certain proportion, and continuously stir in an alkaline solution to complete the cationization of β-cyclodextrin to obtain β-Cyclodextrin cationic derivative, the three reactants of β-cyclodextrin cationic derivative, acrylamide (or acrylic acid) and methylenebisacrylamide are subjected to free radical polymerization to synthesize gel substance at one time, and then After drying, the prepared cationic cyclodextrin-based hydrogel adsorbent material. The material has a good adsorption effect on organic pollutants such as phosphorus-based flame retardants, anionic dyes, organophosphorus pesticides in water, is easy to prepare, has excellent swelling properties, good stability in the pH range of 3-11, and is resistant to ion interference. It is strong, can be recycled for many times, and has no secondary pollution, and has great application prospects.
Owner:BEIJING FORESTRY UNIVERSITY
Graphene quantum dot functionalized nanogold and preparation method and application thereof
InactiveCN112903777AGood water solubilityImprove reducibilityMaterial electrochemical variablesGlycineChlorpyrifos
The invention discloses graphene quantum dot functionalized nanogold and a preparation method thereof. The preparation method comprises the following steps that 1, citric acid, aspartic acid and glycine are dissolved in water and stirred to be uniform, heating is conducted for 120-200 min at the temperature of 150-180 DEG C, and citric acid-aspartic acid-glycine quantum dots are obtained; and (2) the citric acid-aspartic acid-glycine quantum dots are added into a boiling chloroauric acid aqueous solution, heating is performed for 8 minutes, cooling is performed, a product is collected, and the product is re-dispersed in water to obtain the graphene quantum dot functionalized nanogold solution. The invention also discloses an electrochemical sensor modified by the graphene quantum dot functionalized nanogold and a method for detecting chlorpyrifos by using the electrochemical sensor. The nanogold synthesized by using the graphene quantum dots as a reducing agent has excellent conductivity, and the electrochemical sensor constructed by using the nanogold synthesized by the quantum dots as an electrocatalytic active substance and the aptamer as a recognition molecule can detect the organophosphorus pesticide chlorpyrifos.
Owner:JIANGNAN UNIV
Electrochemical biosensor and application thereof
ActiveCN104280438AQuick checkWide detection rangeMaterial analysis by electric/magnetic meansElectrochemical biosensorRepeatability
The invention discloses an electrochemical biosensor. A monodisperse gold nano film is synthesized by adopting a liquid-liquid interface method and used for modifying the surface of an ITO electrode, and the surface of the ITO electrode is further modified by acetylcholin esterase and chitosan to obtain a composite electrochemical biosensor. The electrochemical biosensor can be used for detecting methamidophos in organophosphorous pesticide, is wide in detection range, low in detection limit and high in stability and repeatability and can be used for detecting the residual real methamidophos sample of organophosphorous pesticide for vegetables.
Owner:SUZHOU CHIEN SHIUNG INST OF TECH
Method for reducing organophosphorus pesticide in soymilk
ActiveCN101380041BReduce concentrationOther dairy technologyFood preparationBiotechnologyPeristaltic pump
The invention discloses a method for reducing organophosphorus pesticide residues in soybean milk, which belongs to the technology field of food safety. The soybean milk containing the organophosphorus pesticide residues flows into a pretreatment chamber by a peristaltic pump; degassing and precooling are applied to the soybean by using a vacuum pump for vacuum pumping; high voltage pulsed electric field parameters are set; a peristaltic pump is started and then high voltage pulsed electric field treatment is carried out on the soybean milk after being pumped into a high voltage pulsed electric field treatment chamber; a storage bottle is used for receiving the treated soybean milk at the outlet end of the treatment chamber. The soybean milk is treated by high voltage pulsed electric field technology and the concentration of the organophosphorus pesticide residues of the soybean milk is obviously dropped. Besides, the temperature of the soybean milk in the whole process of the treatment is not higher than 50 DEG C, which exerts no obvious influence on the nutrition and sensory quality of the soybean milk, in addition, a dual function of non-thermal sterilization and the degradation of pesticide residue can be realized. The method can be promoted to the degradation of organophosphorus pesticide residues in other liquid foods.
Owner:CHINA AGRI UNIV
Medicinal composition for preventing and treating vascular injury caused by organic phosphorous pesticide and preparation method thereof
InactiveCN102000106BHydroxy compound active ingredientsCardiovascular disorderBlood vessel injuryPolysaccharide
The invention discloses a medicinal composition for preventing and treating vascular injury caused by organic phosphorous pesticide. The medicinal composition consists of Chinese wolfberry polysaccharide, astragalus root polysaccharide and resveratrol. The medicinal composition can prevent the possibility of various heart and cerebrovascular diseases of personnel contacting the organic phosphorous pesticide for a long term.
Owner:XINXIANG MEDICAL UNIV
Nano zero-valent iron/titanium dioxide/graphene composite photocatalyst and application thereof
InactiveCN112569937AHigh activityAvoid uneven loadWater/sewage treatment by irradiationWater treatment compoundsTitanium chloridePtru catalyst
The invention provides a nano zero-valent iron / titanium dioxide / graphene composite photocatalyst and application thereof. The preparation method of the nano zero-valent iron / titanium dioxide / graphenecomposite photocatalyst comprises the steps of: dispersing selenium powder in a hydrazine hydrate solution, then adding titanium tetrachloride for a hydrothermal reaction, and obtaining titanium diselenide nanosheets compounded with diamine; dispersing the titanium diselenide nanosheet compounded with diamine into ethanol, adding ferric salt for reduction reaction, and calcining to obtain a nano zero-valent iron / titanium dioxide composite material; dispersing graphene oxide in an ethanol-water mixed solvent, and then adding the nano zero-valent iron / titanium dioxide composite material to carryout a secondary hydrothermal reaction, so as to obtain the nano zero-valent iron / titanium dioxide / graphene composite photocatalyst. The composite photocatalyst provided by the invention has the performance of efficiently adsorbing and degrading the organophosphorus pesticide in the sun.
Owner:阜阳莱纳环保科技有限公司
Preparation and application of electrochemical biosensor based on three-dimensional nanoporous gold-modified boron-doped diamond electrode
InactiveCN104034777BImprove conductivityLarge specific surface areaNanosensorsMaterial electrochemical variablesElectrochemical biosensorDiamond electrodes
The invention discloses the preparation and application of an electrochemical biosensor based on a three-dimensional nanoporous gold-modified boron-doped diamond electrode, and specifically relates to the preparation of a boron-doped diamond electrode, the immobilization of acetylcholinesterase and the detection of organophosphorus pesticide residues in the application. The technical problems to be solved are low electrocatalytic activity, difficult surface reconstruction, poor selectivity and sensitivity of the boron-doped diamond film electrode. The invention comprises the following steps: ① preparing three-dimensional nanoporous gold on a boron-doped diamond electrode and modifying the boron-doped diamond electrode; Electrochemical biosensors. The present invention adopting such a technical scheme is used for immobilizing acetylcholinesterase and for electrochemical detection of organophosphorus pesticide residues, which can increase specific surface area, promote electron transfer, improve electrocatalytic activity, and improve detection sensitivity.
Owner:HENAN UNIVERSITY OF TECHNOLOGY
Nitrogen-doped three-dimensional porous graphene-based electrode material as well as preparation method and application thereof
ActiveCN111943179AHigh sensitivityHigh recovery rateGrapheneMaterial electrochemical variablesPorous grapheneMethyl parathion
The invention discloses a nitrogen-doped three-dimensional porous graphene-based electrode material and a preparation method and application thereof, and belongs to the technical field of electrochemistry. The preparation method comprises the following specific steps: (1) mixing a graphene oxide solution with a hydrogen peroxide solution, and conducting reacting to obtain three-dimensional porousgraphene oxide; 2) mixing the three-dimensional porous graphene oxide with urea, and performing hydrothermal reaction to obtain nitrogen-doped three-dimensional porous graphene; and 3) preparing nitrogen-doped three-dimensional porous graphene into a dispersion liquid, and dropwise adding the dispersion liquid to the center of a glassy carbon electrode substrate to obtain the nitrogen-doped three-dimensional porous graphene-based electrode material. The preparation method is simple in process and high in operability, and the nitrogen-doped three-dimensional porous graphene-based electrode material prepared by the preparation method is used in an electrochemical sensor, can be used for detecting the content of organophosphorus pesticide methyl parathion, and has the advantages of high sensitivity, short response time, high anti-interference capability, good repeatability, good long-term stability and high recovery rate.
Owner:SPECIAL EQUIP SAFETY SUPERVISION INSPECTION INST OF JIANGSU PROVINCE
Detection of the degree of exposure to chemical warfare nerve agents and organophosphate pesticides with lateral flow assays
A sample analysis device used to detect a level of exposure of organophosphorus within a sample comprising a sample collection pad, at least one conjugate zone comprising an anti-analyte antibody that is conjugated with a reporter label, and a control antibody that is conjugated with a reporter label, a blocking and / or test zone comprising an immobilized nanoparticle or other molecule that captures the Organophosphate-bound analyte, a second blocking and / or test zone comprising an immobilized antibody that binds to the unbound analyte and an optional third blocking and / or control zone comprising an immobilized antibody that binds to the control molecule wherein, when the analyte is bound by the Organophosphate in the sample it will bind to the first test line, and if the analyte is “free’ from the Organophosphate it will bind to the second test line, and the control antibody will bind to the control line.
Owner:COUNTERVAIL CORP
A kind of treatment method of phosphorus-containing pesticide wastewater
ActiveCN108911391BImprove preprocessing effectEfficient removalTreatment using aerobic processesWater treatment compoundsPhosphite saltOrganic phosphorus
The invention belongs to the technical field of pesticide wastewater treatment, and particularly relates to a treatment method of a phosphorus-containing pesticide wastewater. The invention aims at residual phosphorus-containing organic matters, esters, COD, total phosphorus and the like in phosphorus-containing pesticide wastewater and adopts a "micro electrolysis-biological contact oxidation-UASB- coagulation-Fenton-filter" combined processing method for filtering, so that the discharged water reaches the emission standard; the method disclosed by the invention can effectively remove inorganic phosphorus such as organic phosphorus and phosphite in the wastewater, and the effect of the method is superior to that of the conventional chemical method for removing phosphorus in the wastewater; the pH value of the traditional organophosphorus pesticide wastewater is slightly alkaline, the micro-electrolysis can react under an alkaline condition, and an additional acid reagent does not needto be added.
Owner:江西源春环保科技有限公司
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