45 results about "Organophosphorous pesticide" patented technology

The invention relates to a detergent composition which is prepared from the following components in percentage by weight: 0.5-10% of an organophosphorus pesticide degrading enzyme, 0.2-5% of a washingenzymic preparation, 0.1-6% of a chelating agent, 0.3-5% of a component A, 6-30% of a surfactant, 0.01-25% of an auxiliary agent and 50-90% of water. The component A is a grafted copolymer of an acrylic polymer and fatty alcohol-polyoxyethylene ether or metal salt of the grafted copolymer. The detergent composition provided by the invention has a good removal action to oil stains, food dirt and pesticide residues and is high in viscosity stability and high in enzyme activity if being stored at a high temperature or for a long time.

A magnetic ferromanganese oxide-loaded mesoporous cellulose biochar composite material, a preparation method therefor and application thereof in the field of environmental governance and repair, which are particularly applicable to the field of anionic contaminant adsorption. Said preparation method comprises: first preparing mesoporous cellulose biochar, and then one-step synthesizing MnFe2O4 by means of solvothermal method, and loading same on the mesoporous cellulose biochar, so as to obtain a magnetic ferromanganese oxide-loaded mesoporous cellulose biochar composite material. The magnetic ferromanganese oxide-loaded mesoporous cellulose biochar composite material prepared by said method has characteristics of strong magnetism, being positively charged under acidic conditions, high dispersion stability and good adsorption property, etc., and can be widely used in the field of environmental governance and repair, and is particularly suitable for repairing pollution of anionic contaminants, such as in the field of adsorption of heavy metal and organophosphorous pesticide, and the adsorption capacity to glyphosate can reach 167.2 mg / g.

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.

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.

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.

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.

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.