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42 results about "Beta-cyfluthrin" patented technology

For single dosing at 10 uM, bioallethrin, beta-cyfluthrin, cypermethrin, deltamethrin, and fenpropathrin were all found to significantly decrease open channel probability (p < 0.05).

Method for extracting pyrethroid pesticide residue in liquid sample

The invention discloses a method for extracting pyrethroid pesticide residue in a liquid sample. The method comprises the following steps: (1) taking the liquid sample to be detected, adjusting the pH value of the liquid sample to be 3, adding acetonitrile, and evenly mixing to obtain a uniform solution; (2) adding salting-out liquid into the uniform solution, and standing until layering; (3) after layering, taking the acetonitrile phase at the upper layer, filtering the acetonitrile phase by using a microporous filter membrane with the thickness of 0.45mu m, and then directly carrying out gas chromatography-mass spectrometry determination, wherein the liquid sample is preferably a high-salt or/and high-protein sample. The method for extracting the pyrethroid pesticide residue can be used for extracting and purifying pyrethroid pesticides such as bifenthrin, permethrin, beta-cyfluthrin and fenvalerate, thus reducing the consumption of organic reagents; furthermore, a centrifuge device, an ultrasonic device, a shaking device and the like do not need to be used in the method, so that the method is simple, rapid and high in recovery rate, and can be predicted; the method has good application prospect in the technical field of pesticide residue determination.
Owner:HAINAN MEDICAL COLLEGE

Clothianidin and beta-cyfluthrin suspending agent and preparation method thereof

The invention relates to a clothianidin and beta-cyfluthrin suspending agent and a preparation method thereof. The suspending agent is prepared from the following raw materials in parts by weight: 20-25 parts of clothianidin, 5-10 parts of beta-cyfluthrin, 4-7 parts of a composite dispersing agent, 0.2-0.6 part of a nonionic lipid emulsifier, 0.3-0.7 part of an anionic sulfonate wetting agent, 3-5parts of an anti-freezing agent, 1-1.5 parts of a thickening agent, 0.1-0.3 part of a preservative, 0.5-1 part of a regulator and 0.1-0.5 part of a defoaming agent , with the balance being water. Thesuspending agent provided by the invention is prepared by adding the composite dispersing agent, the nonionic lipid emulsifier and the anionic sulfonate wetting agent into effective components; through a compounding effect of the composite dispersing agent, the nonionic lipid emulsifier and the anionic sulfonate wetting agent, the mixing uniformity of the components of the suspending agent can besignificantly improved; the wetting and dispersing effects of the suspending agent on the surface of the root part of garlic can be enhanced; thus, the pesticide effect of the suspending agent is exerted to a maximum extent when the suspending agent is used in a low-temperature environment; and by addition of the anti-freezing agent, the storage stability of a product can be easily kept when thesuspending agent is used in the low-temperature environment.
Owner:南京保丰农药有限公司

Pesticide composition containing cycloxaprid and pyrethroids

The invention discloses a pesticide composition containing cycloxaprid and pyrethroids. The composition is mainly characterized by containing an active ingredient A, an active ingredient B and the balance of auxiliaries, wherein the active ingredient A is cycloxaprid; the active ingredient B is any one of ethofenprox, bifenthrin, lambda-cyhalothrin, fenvalerate, beta-cyfluthrin, deltamethrin and fenpropathrin; and the weight ratio of the active ingredient A to the active ingredient B is (60:1)-(1:60). The composition can be prepared into wettable powder, water dispersible granules, emulsifiable solution, suspensions, suspoemulsion, emulsion in water, microemulsion, microcapsule suspensions and microcapsule-microcapsule suspensions. The composition can be used for controlling various diseases, has obvious synergistic effect, expands the pesticidal spectrum, has higher activity against the pests on rice, wheat, cruciferous vegetables, tea trees, cotton and fruit trees, has slow release effect, reduces the pesticide application quantity, is harmless to people and livestock, has no phytotoxicity and has good environmental compatibility. The preparations have the advantages of enhanced adhesive forces, rain wash resistance, long duration of efficacy and the like.
Owner:SHAANXI MEIBANG PHARMA GRP CO LTD

Extraction method of pyrethroid pesticide residues in liquid samples

The invention discloses a method for extracting pyrethroid pesticide residue in a liquid sample. The method comprises the following steps: (1) taking the liquid sample to be detected, adjusting the pH value of the liquid sample to be 3, adding acetonitrile, and evenly mixing to obtain a uniform solution; (2) adding salting-out liquid into the uniform solution, and standing until layering; (3) after layering, taking the acetonitrile phase at the upper layer, filtering the acetonitrile phase by using a microporous filter membrane with the thickness of 0.45mu m, and then directly carrying out gas chromatography-mass spectrometry determination, wherein the liquid sample is preferably a high-salt or / and high-protein sample. The method for extracting the pyrethroid pesticide residue can be used for extracting and purifying pyrethroid pesticides such as bifenthrin, permethrin, beta-cyfluthrin and fenvalerate, thus reducing the consumption of organic reagents; furthermore, a centrifuge device, an ultrasonic device, a shaking device and the like do not need to be used in the method, so that the method is simple, rapid and high in recovery rate, and can be predicted; the method has good application prospect in the technical field of pesticide residue determination.
Owner:HAINAN MEDICAL COLLEGE
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