189 results about "Acephate" patented technology

An insecticide for inducing and killing roach is proportionally prepared from acephate or oxafluoroalkyl sulfonated amide, attractant, appetite promoter, stabilizer, and antiseptic through proportional mixing, drying, pulverizing or granulating, and packing.

The invention discloses a highly selective novel reaction with an important application value in organic phosphorus synthesis methodology. The reaction can be applied in important pesticide commodities of acephate, glyphosate, glufosinate-ammonium, chloramine phosphorus, profenofos, and the like. With the reaction, innovative technical synthetic routes can be designed. With the reaction, standards of clean production technologies can be satisfied, and the production cost is greatly reduced compared to existing technical routes.

The invention discloses a binary composite insecticidal compound, which is characterized in that the binary composite insecticidal compound comprises active components A and B, wherein, the active component A is pymetrozine, the active component B is one of acephate, Imidaclothiz, Dinotefuran and Diafenthiuron, and the weight ratio of the two active components is 1-90:90-1. The compound in the invention can be widely applied to crops, such as grain crop, rice, corn, cotton, vegetable, fruit trees and the like, has an active effect in preventing and curing sucking mouthparts pests which are harmful for growth of crops in hemiptera, Thysanoptera, Homoptera, dipteron and the like, such as plant hopper, thrips, cicada, leafhopper, aleyrodid, phylloxera, aphid, scale insect, Sitodiplosis mosellana Gehin, pachydiplosis oryzae wood-mason and the like. The compound of the invention has obvious synergy and is different from other insecticides.

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 relates to a paecilomyces lilacinus-containing composition for preventing and controlling nematodes. The composition contains paecilomyces lilacinus and acephate in a weight ratio of (50-600):(1-7), wherein the living bacterium content of the paecilomyces lilacinus is between 1 and 10 billion colony-forming units (cfu)/gram. The composition can prevent and control the nematodes effectively and exert a synergistic effect on the prevention and control over the nematodes. In addition, the acephate also can kill the nematodes, so pests in growth environment of crops also can be killed while an effect of killing the nematodes by the paecilomyces lilacinus is enhanced; and an effect of preventing and controlling the nematodes and other pests simultaneously by applying pesticides at one time is achieved.

The invention relates to a synergistic pesticide composition and use thereof. The synergistic pesticide composition is characterized in that active ingredients of the synergistic pesticide composition comprise tolfenpyrad and an organophosphorus insecticide. The organophosphorus insecticide comprises: chlorphrifos, profenofos, phoxim, diazinon and pyridaphethione or acephate. The pesticide composition of the invention has remarkable prevention and control effects on various pests on various crops such as rice, vegetable, fruit tree, cotton and the like. Compared with single dosage, the composition has the advantages of low dosage, improved effect, quick acting performance, extended release as well as contribution to delay of the generation and development of the medicament resistance in pest.

The invention provides a Bifidobacterium longum LJM002 strain, of which the collection number is CGMCC No.4900. The LJM002 strain is super-sensitive to acephate, and thus, is a working strain for detecting acephate residues in food. The invention also provides a microbiological method for detecting acephate residues in food, which determines whether the residue level of acephate in a food sample to be detected is overproof according to the size of the inhibition zone on the detection culture medium. The method provided by the invention is simple to operate, has the characteristics of low cost and high sensitivity, is suitable for sample detection, and satisfies the detection requirements of Chinese Pesticide Residue Detection Department for mass samples.

The invention discloses a fluorescent nano-CdSe quantum dot probe of acephate pesticide and application of the fluorescent nano-CdSe quantum dot probe. The fluorescent nano-CdSe quantum dot probe of acephate pesticide is prepared by the following steps: (a) preparing a selenium stock solution; (b) preparing a cadmium stock solution; and (c) preparing the fluorescent nano-CdSe quantum dot probe of acephate pesticide by using the selenium stock solution and the cadmium stock solution. The limit of detection for acephate pesticide can achieve 9.4*10 <-8>mol/L when the fluorescent nano-CdSe quantum dot probe of acephate pesticide is used as a fluorescent probe to detect acephate pesticide. The method disclosed by the invention has the characteristics of simple operation, rapid detection, high sensitivity and good selectivity, and has the characteristic of high-sensitivity and high-selective identification when detecting acephate in mixed samples.

The invention relates to a method for detecting a trace amount of acephate in a sample and provides a kit. According to a dopamine oxidation polymerization method, an artificial antibody namely an MIP (molecularly imprinted polymer) which can be specifically bonded with the acephate is synthesized on a carrier material; after a trace amount of acephate enriched in different samples is specifically separated by using the MIP, the content of the enriched acephate is determined according to an enzyme inhibition-chemiluminescence method. The MIP is high in temperature resistance and organic solvent resistance, the trace amount of acephate enriched in the different samples can be directly and specifically separated through the MIP, and the influence of various interference matters such as other organophosphorus pesticides and chlorophyll is removed. An MIP specific sample pretreatment method is organically combined with an enzyme inhibition method into an MIP-enzyme inhibition method, so that a certain pesticide can be specifically and quickly detected by the enzyme inhibition method, the detection sensitivity and the detection specificity can be improved, and a trace amount of target pesticides in environment and food can be directly, quickly and sensitively detected with high throughput.

This invention discloses a process for treating acephate-containing pesticide wastewater, and recovering acephate, inorganic ammonium salt, acetic acid and acetate. The process comprises: extracting wastewater with a solvent, sending the organic phase containing acephate to a solvent-removal apparatus, removing the solvent, separating, crystallizing to obtain acephate, sending extracted wastewater to a displacer, adding a strong acid to displace ammonium acetate into acetic acid and inorganic ammonium salt, or sending extracted wastewater to a neutralization apparatus, adding caustic alkali, and neutralizing to obtain acetate. The method is economic and environmentally friendly, and has such advantages as easy control and stable operation.

The invention relates to a gas chromatographic method for detecting the residue amount of nine kinds of organophosphorus pesticide in rice. Qualitative and quantitative detection on the pesticide residues of dichlorphos, acephate, omethoate, dimethoate, phorate, malathion, fenitrothion, isocarbophos and triazophos is achieved. The gas chromatographic method is characterized in that acetonitrile is used as extractant, extracting solutions are concentrated through a gas blowing concentrator, and after volume metering is carried out through acetone, trace analysis is directly carried out on a gas chromatograph. The gas chromatographic method has the advantages that the separating effect of a chromatographic column on a target object is good, the detection result is high in accuracy, reproducibility is good, and method sensitivity meets the technical requirement of multi-pesticide-residue detection; compared with the method of GB/T5009.145-2003 national standards (the detection of multiple kinds of residues of organophosphorus and carbamates pesticide in plant food), the gas chromatographic method is simpler, simplifies the pre-processing processes of samples, shortens detection time, and saves cost.

A drought, salt and alkali resistant multifunctional coating of cotton seed contains proportionally amicarthiazol, thiram, acephate, xanthonic acid, caboxymethyl cellulose sodium, xanthan gum, defoaming agent, ethanediol, warning color and water.

The invention discloses a gas chromatography method for detecting the residual quantity of eight organophosphorus pesticides contained in soil (loamy soil, clay and sandy soil) with different textures, and the gas chromatography method realizes the qualitative and quantitive detection of the pesticide residues of acephate, omethoate, dimethoate, phorate, malathion, fenitrothion, isocarbophos and hostathion. The gas chromatography method is characterized in that a dichloromethane-acetone (V:V=1:1) mixed solvent is used as an extracting agent; and an extracting solution is concentrated, metered in volume and filtered and then directly subjected to trace analysis on a gas chromatograph. The gas chromatography method disclosed by the invention has the advantages of good separation effect of chromatographic columns on target objects, high detection result accuracy and good repeatability and meets the detection requirements of residual pesticides on sensitivity; compared with the GB/T14552-2003 (gas chromatography method for detecting the organophosphorus pesticides contained in water and soil) national standard method, the gas chromatography method disclosed by the invention is simpler and more convenient, simplifies the preprocessing steps of a soil sample, shortens the detection time and saves the cost.

The invention relates to pesticide for controlling corythucha ciliate. The pesticide is characterized by comprising the following materials according to the volume ratio: 2 parts of 3% acetamiprid cream, 1-5 parts of 5% imidacloprid cream and 0.5-5 parts of 30% acephate. The invention also provides a use method of the pesticide. The pesticide has the advantages that the relative conduction velocity of the acephate is faster, marked pests are quickly killed, so that the pesticide is used as a main pesticide agent; after the pesticide is applied for 7 days, the content of the pesticide reaches to be highest; the pesticide effect of imidacloprid and acetamiprid at the early stage of application is not obvious, so that the imidacloprid and the acetamiprid are used as auxiliary pesticides matched with the main agent for use; the controlling effect on the corythucha ciliate is good, the lasting time is longer, and the preventing effect is more than 95% after the pesticide is applied for 40 days; and the pesticide has better lasting effect by dry-injection use.

The preparation method of high purity acephate raw powder includes the folloiwng steps: making O,O-dimethyl-thiophosphorylamide undergo the processes of isomerization and acetylation (or making O,S-dimethyl thiophosphorylamide undergo the process of acetylation) to obtain the acephate crude, then making the acephate crude undergo the processes of gas ammonia neutralization, solid-liquid separation, precipitation and crystallization and refining crude crystal body to obtain high-purity acephate raw powder. Its yield rate and purity are high.

The invention relates to a method for detecting dipterex and acephate by virtue of enzyme labelled bionic immunoassay. The method comprises the steps of the synthesis of half antigens, the preparation of enzyme-labelled antigens, the preparation of a multiple-recognition site hydrophilic molecular imprinted polymer membrane, the establishment of a standard curve and the like. According to the method for detecting the dipterex and the acephate by virtue of the enzyme labelled bionic immunoassay, the prepared hydrophilic imprinted polymer membrane is taken as bionic antibody to take the place of a biological antibody, and a high-sensitivity detection method having a wide detection range for the dipterex or the acephate is established by use of the immunosorbent assay principle. The defects of long preparation cycle, easiness in inactivation, high cost and the like of the traditional biological antibody are overcome and the analysis time can be greatly shortened. The method for detecting the dipterex and the acephate by virtue of the enzyme labelled bionic immunoassay is low in cost, simple in experimental operation, high in sensitivity, and suitable for quick detection on the dipterex or the acephate in various agricultural products.

The invention provides a preparation method and an application of an acephate molecularly imprinted polymer. The method comprises the following steps: polymerizing a template, a functional monomer, a crosslinking agent and an initiator by a Pickering emulsion method by using acephate as template molecules to obtain a molecularly imprinted polymer with template molecule acephate; and eluting and drying the molecularly imprinted polymer to obtain the acephate molecularly imprinted polymer without template. The molecularly imprinted polymer has high compatibility and selectivity on acephate, is simple in synthesis process, easily controllable in reaction condition and good in regeneration performance, and can be used for enriching/separating organophosphorus pesticide acephate residues in a water environment.

Chemically stable, dry-flow, low compact, dust free, soluble granules of phosphoroamidothioate are prepared using a substantially dry granulation process including an agitative balling process. In a preferred embodiment, spherically shaped acephate granules are produces without the intentional addition of water and/or solvents.

The invention provides a continuous production method of acephate. The continuous production method comprises the following steps: (1) acylation reaction: continuously adding methamidophos, acetic anhydride, a solvent and a catalyst into an acylation device in a certain proportion, and reacting for 65-240 minutes at 20-80 DEG C to obtain a reaction liquid; (2) neutralization reaction: introducing the reaction liquid obtained in the step (1) into a neutralization reactor, and continuously mixing with ammonia or ammonia water for 5-60 minutes at 10-50 DEG C to obtain a neutralization liquid; (3) extraction: introducing the neutralization liquid into an extraction tower to perform reverse extraction; (4) evaporation and concentration: performing evaporation and concentration on an extraction liquid in a double-effect evaporator; and (5) crystallization and drying: crystallizing a concentrated extraction liquid at 5-25 DEG C, then filtering crystallized solids by virtue of a filtering machine, and finally drying the solids in a dryer to obtain acephate. The continuous production method provided by the invention achieves the continuous operation and automatic control in a production process of acephate, and has very strong practicability.

The invention discloses preparation of various common antibodies of an enzyme-linked immunoadsorption determination reagent kit suitable for analyzing different residues at the same time and common envelope antigen, which comprise preparation methods of common organophosphorus pesticide semiartificial antigen structure, different organophosphorus pesticide common antibodies and common envelope antigen. The organophosphorus pesticide common antibodies and the common envelope antigen prepared by the preparation methods can be used to prepare the enzyme-linked immunoadsorption determination reagent kit suitable for analyzing different organophosphorus pesticide residues at the same time; moreover, the reagent kit can be used for quick detection of different organophosphorus pesticides such as methyl parathion, fenitrothion, fenthion, acephate, Cygon and malathion in water, soil, foodstuff such as vegetables and poisoned samples; in addition, the invention has the advantages of simple preliminary treatment process of samples, simultaneous detection of samples in batches and lower sample detection cost than the prior detection method.