162 results about "Parathion" patented technology

The invention pertains to the technical field of biologic degrading for chemical pesticide, and relates to a bacterial strain that can efficiently degrade Pyrethroid, Organophosphorus and vermectins pesticides and the application of the bacterial strain. The bacterial strain is an Acinetobacter sp. JCX22D bacterial strain, the biologic fature of the bacterial strain is Gram's negative, free from flagella, in form of short rod, is of esterase and lipase activity, free from oxidase activity, and can take use glucose and fructose. The bacterial strain is resistant to Ampicillin and low-concentration Spectinomycin and nalectin, and not resistant to rifamide. The degrading efficiency of the bacterial straine is more than 72% for high-efficiency cypermethrin, cyhalothrin, decamethrim, bifenthrin pesticid, is more than 70% for diazinon, parathion-methyl, phoxime and chlorpyrifos, and is 90% for vermectins. The bacterial strain can be used for biologically degrading above pesticides, and biologically recovering or cleaning any water body, soil and agricultural products that are polluted by pesticides.

The invention belongs to the technical field of healthcare tea and particularly relates to guanxiang tea and a preparation process thereof. The preparation method comprises the following steps of: (1) picking fresh leaves from guanxiang trees; (2) sealing and fermenting the leaves; (3) steaming the leaves; (4) drying the leaves; (5) insulating the tea; and (6) packing finished tea products. In the preparation method of the invention, the bitter taste of the guanxiang leaves can be removed through the fermentation process; the liquid colors and aromas of finished guanxiang tea vary with the fermentation degrees of the guanxiang leaves, and so the tea is diversified; in the parathion process, the guanxiang leaves are not required to be cut, so the leaves of the finished products of the guanxiang tea are complete, the effective components guanxiang tea is released stably in the process of making the tea and the tea is obviously lasting longer than products of the same kind; and the guanxiang tea has yellow tea color, aromatic flavor, good mouth feel and sweet taste and contains rich active ingredients such as mineral substances comprising nitrogen and phosphorus, soluble polysaccharide, polyphenol, alkaloid, flavone and the like. The guanxiang tea without any spice is a health-care tea suitable for long-term drinking.

The invention relates to a preparation method of magnesium phosphate fertilizer, in particular to a method which takes phosphate flotation byproduct tailings in medium low-grade as raw materials to prepare industrial-grade magnesium phosphate fertilizer, and belongs to the field of chemical technology. The preparation method is characterized in that the preparation method comprises the following steps: first: taking flotation phosphate tailing slurry as the raw material, controlling the liquid water content to be between 40 percent and 45 percent; second: leading the tailing slurry in step (1) to a mixed reactor, starting a mixer, and controlling the rotate speed to be 400 r/min to 500 r/min; third: adding parathion mixed acid with a certain molar ratio into the reaction in the mixed reactor in step (2), carrying out chemical reaction when the mixed reactor warms up to a certain temperature, reaches a certain mixed reaction time and goes into a chemical chamber; fourth: delivering fresh magnesium phosphate fertilizer obtained from step (3) into a ripening warehouse for ripening; fifth: smashing the magnesium phosphate fertilizer obtained from step (4) to be directly packed to obtain power-shaped magnesium phosphate fertilizer products; sixth: smashing and delivering the magnesium phosphate fertilizer obtained from step (4) to a back pelletizer for pelleting to make grain-shaped magnesium phosphate fertilizer products.

The invention relates to a method for detecting ten types of organophosphorus pesticides by using magnetic separation-gas chromatography. The method is used for quickly detecting ten types of organophosphorus pesticides (dipterex, methamidophos, acephate, omethoate, moncrotophos, dimethoate, phosphamidon, parathion-methyl, malathion and chlorpyrifos) based on combination of solid-phase extraction, magnetic separation and the gas chromatography. The method comprises the following steps: preparing a magnetic solid-phase extraction agent, establishing a combination system of the magnetic separation and the gas chromatography, and detecting the organophosphorus pesticides in objects to be detected. A method capable of quickly separating and detecting ten types of organophosphorus pesticides at high sensitivity simultaneously is established by taking prepared magnetic chitosan microspheres with high absorption performance on the ten types of organophosphorus pesticides such as dipterex and the like as adsorption functional materials and using combination of the solid-phase extraction, magnetic separation and the gas chromatography. The method is simple in experimental operation, high in detection sensitivity, low in cost and applicable to detection of residues of ten types of organophosphorus pesticides such as trace dipterex and the like in all products.

The invention discloses a preparation method of a ZnIn2S4/TiO2 nanotube composite membrane photoanode for photocathodic protection. The parathion method comprises the following steps that 1) calcination is performed by taking a polished and cleaned titanium substrate as an anode and platinum as a counter electrode after anodizing in NH4F ethylene glycol water solutions, namely that TiO2 nanotube array membranes are prepared on the titanium substrate surface; the mass ratio of NH4F, water and ethylene glycol is 2:20-30:400 in the NH4F ethylene glycol water solutions; the calcination temperatureis 450-550 DEG C, and the calcination time is 1-2 h; 2) Zn(NO3)2.6H2O, InCl3.4H2O and C2H5NS dissolve in water to obtain mixed solutions, and the TiO2 nanotube array membranes prepared in the step 1)are immersed in the mixed solution; and the calcination is performed after sealing, so that ZnIn2S4/TiO2 nanotube composite membranes are obtained. The ZnIn2S4/TiO2 nanotube composite membranes prepared with the method have excellent photoelectric conversion performance.

The invention relates to a gas chromatographic method for detecting residues of five high-toxic organophosphorus pesticides in different texture soils(loam, clay and sandy soil) so as to realize the qualitative and quantitative detection on the residues of methamidophos, parathion, methyl parathion, monocrotophos and phosphamidon pesticides in the soils. The gas chromatographic method is characterized in that acetonitrile is taken as an extracting agent, and after an extraction solution is concentrated with constant volume and is filtered, the trace analysis is directly carried out by using a gas chromatograph. The gas chromatographic method has the advantages that firstly a chromatographic column has a good separation effect on a target object, the accuracy degree of detection results is high, the reproducibility is good, and the sensitivity of the method meets the detection requirements of the residual pesticides; secondly compared with a GB/T14552-2003 (gas chromatographic method for determining organophosphorus pesticides in water and the soil), the national standard method is easier and more convenient, a pretreatment process of soil samples is simplified, the detection time is shortened, and the cost is saved.

The invention discloses application, a composite anti-rusting pigment and a parathion method of calcium phosphate aluminum silicate. The anti-rusting pigment comprises, by weight, 50-75 parts of aluminum phosphate, 5-15 parts of aluminum silicates, 5-15 parts of calcium silicate, 10-30 parts of filler and 0.1-5 parts of additive. The parathion method of the calcium phosphate aluminum silicate composite anti-rusting pigment comprises the following steps of mixing at least three materials including the aluminum silicate, the calcium silicate and the aluminum silicate of all raw materials with water, keeping the temperature to be in a range from 20 DEG C to 100 DEG C, and continuously performing stirring 1.5-12 hours; adding the remaining materials into the mixture to be mixed evenly, and then performing centrifugal dewatering, drying and smashing. The anti-rusting pigment has the advantages of being non-toxic, environment-friendly and efficient and can completely take the place of red lead, zinc chrome and other traditional toxic heavy metal anti-rusting pigments used in industrial coatings.

The invention discloses a lubricating grease composite used for a three-pin type constant-velocity universal joint of a vehicle transmission system. The lubricating grease comprises the following components based on 100 percent weight: (a) 78 to 83 percent of base oil, (b) 9 to 12 percent of composite lithium calcium soap thickener, (c) 0.5 to 2.0 percent of sulphide isobutene and/or an organic sulfide of dibenzyl disulfide, (d) 1.0 to 3.0 percent of zinc dialkyl dithiophosphates, (e) 0.5 to 2.5 percent of molybdenum dithio phosphate, (f) 0.5 to 3.0 percent of parathion-free nitrogen-containing boric acid ester, (g) 0.5 to 1.0 percent of amine or phenolic antioxygen, and (h) 1.0 to 2.0 percent of dinonyl naphthalene sulfonic acid barium antirusting agent. The composite has a low friction coefficient, low abrasion resistance and high extreme pressure property, can reduce or prevent noise, vibration and harshness (NVH), and is particularly suitable to be used for lubricating the three-pin type constant-velocity universal joint of a vehicle transmission shaft.

The invention provides a metal-organic framework imprinted material and a preparation method thereof, belonging to the technical field of nanometer materials. The preparation method for the metal-organic framework imprinted material comprises the following steps: dispersing a magnetic metal-organic framework compound prepared through an in-situ reaction of terephthalic acid with magnetic Fe3O4 nanoparticles in a solvent; adding template molecules and functional monomers; and carrying out a cross-linking reaction and then removing the template molecules; wherein the template molecules comprise one or more selected from a group consisting of diazinon and parathion, and the functional monomers comprise one or more selected from a group consisting of 3-aminopropyltriethoxysilane and phenyltrimethoxysilane. The preparation method is simple in process, low in cost, highly environment-friendly, and easy to realize large-scale production. The metal-organic framework imprinted material is prepared by using the preparation method. The prepared metal-organic framework imprinted material has better stability and adsorptivity, good recognition performance, high selectivity and large adsorption capacity, and can realize simultaneous and selective removal and enrichment of a plurality of organophosphorus pesticides in environment and food.

The invention discloses a preparation method of an inflaming retarding type aqueous polyurethane coating. Under the condition that dibutylboron trifluoromethanesulfonate catalysts exist, 1,4-Bis(hydroxydimethylsily)benzene and hexamethylene diisocyanate are mixed by a weight ratio of 2:1 and react for 2-4 hours at 80-110 DEG C, then parathion is added into a reaction system, the reaction temperature is 80-110 DEG C, the reaction time is 40-60 minutes, and a polyurethane prepolymer is obtained; chain extenders and butanone are added into the polyurethane prepolymer and are stirred for 3-5 hours at 65-85 DEG C, trithylamine is added for neutral reaction for 10-40 minutes, water is added for emulsification, and aqueous polyurethane is formed; aluminum salt dispersion liquid, L-pyroglutamic acid, screw ring phosphoryl nafoxidine ester and N-aminoethyl-3-aminopropyl triethoxysilane are added into the aqueous polyurethane and are sheared and stirred for 40-80 minutes under the condition of pH being 7, and the inflaming retarding type aqueous polyurethane coating is obtained. The flammability and mechanical property of the obtained polyurethane coating are greatly improved.

The invention discloses a method for preparing a parathion molecular imprinting polymer for water quality detection. According to the method, parathion is used as a template molecule to polymerize the parathion molecularly imprinted polymer for organic phosphorus detection in a water environment under the initiation action of ultraviolet light. The parathion molecularly imprinted polymer prepared by the method has the advantages of short polymerization time and favorable adsorbability; and when the prepared parathion molecularly imprinted polymer is used as a solid phase extraction column filler, solid phase extraction-gas phase chromatography can be utilized to quickly and effectively analyze organic phosphorus pesticide in water, and the parathion molecularly imprinted polymer has the advantages of favorable separating effect, less impurity interference, low detection limit, high sensitivity, high precision and favorable recovery effect, and can satisfy the requirements for detecting trace amounts of organic phosphorus in water.

The invention discloses a methyl-parathion molecularly-imprinted electrochemical sensor and a preparation method thereof. The sensor comprises a glassy carbon electrode, wherein the glassy carbon electrode is covered with a carboxyl graphene-nanogold composite coating, and molecularly-imprinted holes corresponding to methyl-parathion molecules are formed in the carboxyl graphene-nanogold composite coating. The preparation method comprises four steps as follows: synthetizing a carboxyl graphene-nanogold composite; using the carboxyl graphene-nanogold composite to modify the glassy carbon electrode; forming a methyl-parathion molecularly-imprinted template; removing methyl-parathion molecularly-imprinted template molecules. Through an electrochemical performance test, the sensitivity of the methyl-parathion molecularly-imprinted electrochemical sensor is high. A methyl-parathion solution with the concentration being 4*10-8 mol.L<-1> is compared with a methyl-parathion solution with the concentration being 0, current curves are obviously changed, and thus micro trace detection on the low-concentration methyl parathion is realized.

The invention relates to new moisture absorption deodorant sand for pet excrement, which has the raw material prescription that: highly weathered granite coarse sand 10 pieces to 50 pieces, swell soil 40 pieces to 80 pieces, gesso 10 pieces to 40 pieces, wooden meal or cellulosine 40 pieces to 80 pieces, paste or gluewater 10 pieces to 20 pieces and essence 0.1 pieces to 0.5 pieces. The parathion method is that: mixing evenly each component of in the raw material prescription to make the new moisture absorption deodorant sand for pet excrement. The product not only can absorb the moisture in the pet excrement, but also has the functions of deodorizing and resist bacteria. The invention has the advantages of wide source of raw material, low production cost and good deodorizing and bacteria resisting effect as well as strong moisture absorption capacity without powder; besides, by adding the wooden meal in the raw material, the product becomes light but large in bulk, thus using less than before when in use, which largely saves the cost, increases the economic efficiency and is beneficial for transportation.

The invention provides a preparation method of a small-molecule inhibitor for a prostate-specific membrane antigen. The preparation method comprises the following steps: taking a glutamic acid derivative and a lysine derivative as starting raw materials, and preparing a formula (IV) core structure Lys-Urea-Glu for a formula (I) small-molecule inhibitor by using a carbonyldiimidazole one-pot method; and removing a protecting group after the formula (IV) core structure Lys-Urea-Glu is connected with HYNIC with 99mTc chelating power through a connecting chain so as to obtain the formula (I) small-molecule inhibitor. If the small-molecule inhibitor (namely the formula (I) small-molecule inhibitor) for the prostate-specific membrane antigen prepared on the basis of the parathion method is marked by radioactive nuclide 99mTc, the small-molecule inhibitor can be used for the diagnosis of prostatic cancer clinically as a molecular imaging probe and has potential clinical application values.

The invention discloses detoxication engineering bacteria, and a preparation method and application thereof. The invention provides a recombinant plasmid which is obtained by introducing coded genes of detoxication esterase and coded genes of hydrolase into an enzyme cutting site in plasmid pETDuet-1. The engineering bacteria of the invention can be obtained by introducing the recombinant plasmidinto host bacteria. The engineering bacteria comprise the coded genes of the detoxication esterase and the hydrolase and can realize inducible expression of the detoxication esterase and the hydrolase. Crude enzyme solution obtained by fermentation of the engineering bacteria can also be protected. The engineering bacteria and the crude enzyme solution thereof can simultaneously degrade organic acid esters such as malathion, parathion, high-efficiency cypermethrin, acetofenate and the like and organophosphorus pesticides, and can be used for detoxication of organophosphorus poisoned warm-blooded animals. The invention provides a new way for biological pollution treatment of toxic and harmful compounds such as pesticides remained in water sources, soil and the like by using natural resources of eukaryote and prokaryote.

The invention provides an immunoassay kit for detecting poly-residue of organophosphorus pesticides and belongs to the technical field of pesticide detection. The kit includes: a black ELISA plate coated with an antigen, a colloidal gold probe solution, a washing solution, and a dithiothreitol solution. The antigen includes triazophos, parathion and chlorpyrifos; the colloidal gold probe is gold nano-particles, of which the surfaces are modified with bio-barcodes and any one of the specific monoclonal antibodies as follows: a triazophos antibody, a parathion antibody and a chlorpyrifos antibody; and the number of the bio-barcodes modifying the surfaces of the gold nano-particles is 130-170. The bio-barcodes are labeled with fluorophores, wherein the monoclonal antibodies and the colors ofthe fluorophores have a one-to-one corresponding relationship. The kit can quantitatively detect a plurality of residues of organophosphorus pesticides in the same reaction system.

An organophosphorus compound degradation and detection integrated method based on an organic framework (MOF-808) composite material formed by Fe-doped carbon dots (Fe-CDs) and metal zirconium mainly comprises the following steps: forming an Fe-CDs/MOF-808 composite material with Fe-CDs embedded in pores of the MOF-808 and Fe-CDs@MOF-808 composite material with Fe-CDs attached to the surface of the MOF-808 in two modes. The two can degrade the organophosphorus compound to generate p-nitrophenol, fluorescence of Fe-CDs is quenched through the inner filtering effect, and degradation detection of the organophosphorus compound is achieved. The Fe-CDs/MOF-808 is characterized in that the MOF-808 catalyzes the hydrolysis of paraoxon under the condition of room temperature to generate p-nitrophenol; and the Fe-CDs@MOF-808 generates p-nitrophenol by photocatalytic degradation of parathion through generated <1> O2, .O2<-> and other active oxygen species under the illumination condition by utilizing the photosensitive oxidation performance of Fe-CDs. The method is high in organophosphorus pesticide degradation and detection speed, wide in detection linear range and low in detection limit, and can be applied to degradation and detection of organophosphorus compounds in actual water samples and fruit and vegetable samples.

The invention discloses a nutritional tremella fuciformis juice and a preparation method thereof, which relate to the technical field of health-care beverages and producing and processing thereof. The nutritional tremella fuciformis juice contains the following components in percentage by weight: 15% of high-quality tremella fuciformis, 5% of red dates, 5% of lily, 5% of barbary wolfberry fruit, 3% of glucose, 5% of white granulated sugar, 5% of crystal sugar and 57% of purified water. The components are subjected to the steps of emulsified normal juice preparing, burdening, homogenizing, filling and sealing, sterilizing, cooling, quality testing, packaging, finished product warehousing and the like so as to obtain the nutritional tremella fuciformis juice. According to the juice and the parathion method, the special resource tremella fuciformis, the red dates, the lily and the barbary wolfberry fruit are taken as main raw materials, and active ingredients of tremella polysaccharides and the like in the tremella fuciformis are scientifically extracted, so that on the basis of maintaining the multifunctional nutrition and health-care effects of the polysaccharide, the juice is additionally provided with the special health preservation effects of 'nourishing yin for lowering fire, protecting liver and nourishing stomach, anti-oxidizing and immune regulation' of the tremella fuciformis; and moreover, the sweet and refreshing tastiness of the tremella fuciformis juice is improved.

The invention relates to a carrying device of a throwing type fire-fighting grenade. The carrying device comprises, by weight, 100 parts of polyvinychlorid resin, 4 parts of dioctyl-phthalate, 2parts of MBS enhancement, 2.5 parts of stearic acid. A parathion method of the carrying device includes the following steps of adding the dioctyl-phthalate to the polyvinychlorid resin at the temperature of 38EDG C-42DEG C, evenly stirring and enabling the dioctyl-phthalate and the polyvinychlorid resin to coexist for 10 minutes, adding the MBS enhancement to mixture of the polyvinychlorid resin and the dioctyl-phthalate, evenly stirring and enabling the MBS enhancement and the mixture of the polyvinychlorid resin and the dioctyl-phthalate to coexist for 10 minutes, adding the stearic acid to mixture of the MBS enhancement, the polyvinychlorid resin and the dioctyl-phthalate, evenly stirring the stearic acid and the mixture of the MBS enhancement, the polyvinychlorid resin and the dioctyl-phthalate to coexist for 10 minutes, putting mixture of the MBS enhancement, the polyvinychlorid resin, the dioctyl-phthalate and the stearic acid in an extruder, heating the mixture to reach from 160 DEG C to 180 DEG C, plastify the mixture for one hour, and forming the carrying device in a granule-cutting mode. The carrying device of the throwing type fire-fighting grenade has the advantages of being abundant in number, favorable for taking of the throwing type fire-fighting grenade, easy to use and the like.

The invention discloses a construction method of an electrochemical sensor for rapidly and quantitatively detecting pesticide residues, relates to the technical field of food safety detection and analysis, overcomes the defects of various existing methyl parathion detection technologies, and has the advantages of low detection limit, rapidness and accuracy in detection, convenience in carrying, less required equipment, low cost and the like. According to the specific scheme, the construction method comprises the following steps of S1, carrying out self-assembly on 4-aminothiophenol on a sulfhydrylated graphene modified silk-screen printing electrochemical sensor; S2, self-assembling methyl parathion on the sulfhydrylated graphene modified silk-screen printing electrochemical sensor; and S3, preparing a sulfhydrylated graphene loaded gold platinum nanoparticle modified molecularly imprinted silk-screen printing electrochemical sensor: preparing the methyl parathion molecularly imprintedpolymer electrochemical sensor by adopting an electro-polymerization method. The construction method of the electrochemical sensor for rapidly and quantitatively detecting pesticide residues providesa miniature pesticide residue detection chip which is rapid, sensitive, portable, low in cost and easy to operate.

The invention discloses an electrochemical detection method of organophosphorus pesticide. The detection method comprises the following steps: preparing a graphene-chitosan-parathion compound modified electrochemical sensor at first; then taking K3[Fe (CN)6] as a probe; carrying out differential pulse voltammetry (DPV) scanning on the basis of a principle that acetylcholin esterase can be strongly combined with organophosphorus pesticide; recording response current; and analyzing and deducing related data to obtain the concentration of the corresponding organophosphorus pesticide in a sample to be detected. By the detection method, the detection limit of the organophosphorus pesticide is between 0.012 ng/mL and 0.23 ng/mL, and the linear range is 1-1,500 ng/mL. The electrochemical detection method of organophosphorus pesticide ahs the beneficial effects that compared with another method for rapidly detecting the organophosphorus pesticide by using an enzymatic inhibition method, the detection method has the characteristics that enzymatic reaction is not required, therefore, detection time is greatly saved, and meanwhile, the problem that the repeatability of a detection result is poor due to the fact that enzymes from different sources are adopted is also avoided.

The invention discloses a method for preparing an electrochemical sensor for detecting parathion, belonging to the field of electrochemical sensors. The method comprises the following steps: diluting 1.0wt% of nano silicon dioxide particles by using secondary water, performing ultrasonic treatment for an hour, thereby obtaining dispersion of the 1.0wt% of nano silicon dioxide particles; adding nano acetylene black into the dispersion of the 1.0wt% of nano silicon dioxide particles, so that the concentration of the nano acetylene black is 10mg/ml<-1>; uniformly performing ultrasonic mixing, thereby obtaining mixed solution of the nano silicon dioxide particles and nano acetylene black; dispensing 5uL of the mixed solution of the nano silicon dioxide particles and nano acetylene black on the surface of a glassy carbon electrode, drying in an infrared drying box, thereby obtaining a composite electrode modified by the nano silicon dioxide particles and nano acetylene black. According to the sensor prepared by the method, the detection result is rapid and the data is accurate when the parathion is detected, and the method has the advantages of simplicity, convenience, practicality, low price, high efficiency and sensitivity.

The invention provides a determination method of pesticides including dimethoate and the like in Xinhui tangerine peels and products of the Xinhui tangerine peels. The pesticides comprise dichlorvos, methamidophos, acephate, phorate, omethoate, dimethoate, chlorpyrifos, malathion, parathion, quinalphos and ethion. The method comprises the following steps: manufacturing a standard curve, extracting a sample, purifying the sample and determining the sample. The determination method has the advantages of simplicity and rapidness in operation, high sensitivity and strong matrix interference resistance capability, and is suitable for qualitative and quantitative analysis of pesticide residues in the Xinhui tangerine peels and the products of the Xinhui tangerine peels.

The invention discloses a fluorescent nano Cd Se quantum dot probe of a parathion pesticide and an application thereof. The preparation of the fluorescent nano quantum dot probe of the parathion pesticide includes preparing a selenium stock solution, preparing a cadmium stock solution, and preparing the fluorescent nano Cd Se quantum dot probe of the parathion pesticide by the cadmium stock solution and the selenium stock solution. When the fluorescent nano Cd Se quantum dot probe of the parathion pesticide is utilized as a fluorescent probe to detect the parathion pesticide, the limit of detection for the parathion pesticide can reach to 8.2*10-8mol/L. According to the fluorescent nano Cd Se quantum dot probe of the parathion pesticide and the application thereof, the method is simple in operation, the detection is rapid, the sensitivity is high, the selectivity is good, and during the parathion detection in a mixed sample, the sensitivity and the selective recognition are high.