105 results about "Fenitrothion" patented technology

The invention relates to a single-chain antibody against fenitrothion and a preparation method thereof. A ribosome display library of a whole set of single-chain antibody genes against the fenitrothion is constructed by using a ribosome display technology and rounding a hybrid tumor technology, and three single-chain antibody genes with high affinity and high specificity for the fenitrothion are screened from the library. After the single-chain antibody genes are connected with vectors PPOW3.0 and then subjected to soluble expression in escherichia coli, three soluble proteins with molecular weights of about 30KDa are obtained; and by enzyme-linked immuno sorbent assay (ELISA) and Biacore analysis, the three antibody proteins have high affinity and high specificity for the fenitrothion, so excellent single-chain antibody genes and antibody proteins are provided for establishing ELISA and immune sensors. The invention has significance for realizing quick, simple, convenient and accurate detection of organic phosphorus pesticide residue, and provides a new direction.

The invention discloses a method for growing rice by using an enzyme. The method is characterized in that the method comprises a seedbed management process; the seedbed management process comprises the steps of bed soil preparation, soil disinfection and seedbed fertilization; the bed soil preparation step is realized by blending dry field soil or paddy field soil with an enzyme fertilizer; the soil disinfection step is realized by spraying an environmentally-friendly enzyme solution on soil based on the conventional soil disinfection; and the seedbed fertilization step is realized by additional application of the enzyme fertilizer based on the conventional seedbed fertilization. The invention also discloses an enzyme rice. The chalky grain percentage is lower than 8.5, the amylose contentpercentage is lower than 17.25, the lead content is less than 0.02 mg / kg, the inorganic arsenic content is less than 0.01 mg / kg, the cadmium content is less than 0.01 mg / kg, and the content of malathion, fenitrothion and pretilachlor is 0; and the method solves the problems of soil damages and environment and rice pollution caused by high dosages of chemical fertilizers and pesticides, in existing conventional rice growing methods.

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.

The invention discloses a O, O-dimethyl-O-[-3-methyl-4-amino phenyl] thionic phosphate (FNH2) as fenitrothion hapten, artificial antigen and specific antibody, which is characterized by the following: reducing nitro in the fenitrothion molecular structure into amino under acid condition with zinc powder; reacting to obtain the hapten molecule in connection with carrier protein; diazotizing to couple hapten and protein to obtain immunogen and peridium; using immune animal with immunogen to make the specific antibody.

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 the field of pest prevention and control in landscape engineering, and in particular relates to a composition for preventing and treating wood-boring pests. The composition consists of the following components in parts by weight: 0.1-20 parts of fenitrothion, 0.1-20 parts of turpentine, 0.1-20 parts of dimethoate, and 1-50 parts of water. The method comprises the following step: thoroughly and uniformly mixing the fenitrothion, the turpentine, the dimethoate and the water according to the formula ration, thus obtaining the composition for preventing and treating wood-boring pests. When the Composition for preventing and controlling wood-boring pests is coated on the branches and trunk or root of a tree, the purpose of preventing the wood-boring pests from damaging the tree can be realized. The Composition for preventing and treating the wood-boring pests has the advantages of high prevention and cure rate, low toxicity, low cost and suitability for popularization in large scale.

The invention discloses an electrochemical method for rapidly detecting fenitrothion pesticide residue, and belongs to the technical field of biological sensing. According to the present invention, fenitrothion has the good oxidation reduction characteristic on the electrode surface and a gold nano-rod nanometer composite material has advantages of strong adsorption ability, good conductivity and the like, such that the rapid enrichment and the high sensitivity detection of the fenitrothion pesticide can be achieved; the prepared gold nano-rod / chitosan / glassy carbon electrode is used to perform the electrochemical detection on the fenitrothion pesticide; the results show that the linear detection range of the electrochemical sensor on the fenitrothion pesticide is 5-300 ng mL<-1>, the detection limit is 1.74 ng mL<-1>, and the electrochemical sensor is successfully used for the quantitative determination of the fenitrothion in the vegetable sample; and compared with the traditional organophosphorus pesticide residue detection method, the method of the present invention has advantages of convenience, rapidness, simple operation, high sensitivity, good reproducibility, and direct and rapid detection of the fenitrothion pesticide residue.

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.

The invention relates to a method for detecting fenitrothion pesticide residues in maize based on surface enhanced Raman spectroscopy (SERS). The method comprises the following steps that (1) the fenitrothion residues in a maize contamination sample are extracted, and residue extracting solutions are obtained; (2) the SERS of all the concentrations of the residue extracting solutions is measured,and thus fenitrothion residue spectrums are obtained; (3) base lines in the fenitrothion residue spectrums are removed through a polynomial fitting algorithm, and the fenitrothion residue spectrums are preprocessed through convolution smoothing and a wavelet transform algorithm; (4) main information of the fenitrothion residue spectrums is extracted through a principal component analysis method, and the detection limit of the SERS to the fenitrothion residues in the maize is judged; and (5) an SVR regression model is established, and the fenitrothion residues in the maize are quantitatively analyzed. According to the method, the SERS and a chemometrics method are combined, and thus the fenitrothion pesticide residues in the maize are detected easily, quickly and accurately.

The invention discloses a preparation method and an application of a direct recognition fenitrothion antibody. The structural formula of a hapten of fenitrothion is as shown in a formula (II) or (I) in the specification. The hapten is coupled to a carrier protein, and two artificial antigens are successfully prepared. One artificial antigen is used for immunizing animals to prepare hybridoma cellscapable of secreting the fenitrothion antibody. The other artificial antigen is used as a coating antigen, and a fenitrothion detection method based on indirect competitive enzyme linked immunosorbent assay is further built. The detection method for detecting fenitrothion pesticide residues has the advantages of simplicity, convenience, rapidness, strong specificity and high sensitivity, detectedIC50 value is 7.13ng / mL, detection limit is (IC10) 1.7ng / mL, and linear detection range is 2.9-17.9ng / mL.

The invention relates to a band girdling method for promoting fixed point sprouting of terminalia neotaliala Capuron trunks and belongs to the technical field of tree planting. The method specifically comprises the steps that 1, trunks are cut, wherein plants with soil balls are dug by adopting a tree transplanting method before new leaves of terminalia neotaliala Capuron grow out, and then trunk cutting is performed at the height of 4-6 m of the trunk; 2, band girdling is performed, a first band girdling port is designed at the position, 1.5 m away from a tree head, of each trunk, and band girdling ports are upwards designed from the first band girdling port at intervals of 80 cm; 3, temporary planting is performed, wherein the terminalia neotaliala Capuron undergoing band girdling processing on the same day is transferred into root control bags through a crane and is supported; 4, watering is performed, root fixing water is supplied enough, a rooting agent is irrigated to roots, and soil is kept wet in a later period; 5, fertilization is performed, wherein trees begin to put forth buds under the band girdling ports after 25-35 days after temporary planting, and topdressing can be performed after leaf development and ageing; 6, pests are killed, wherein thiacloprid and fenitrothion missible oil are adopted to kill cerambycidae and anomala corpulenta respectively. By adopting the method, fixed point sprouting of plants is achieved, tree crown layers are better restored, the disease resistance is strong, and the survival rate is high.

The invention relates to a high-effect and low-toxicity composite farm pesticide, which includes ether chrysanthemic ester, for preventing and controlling the pest of rice ash fly cootie, rice leaf folder, rice stem borer and yellow rice borer. The pesticide contains 0.5-20 wt.% of active components ether chrysanthemic ester, 2-30 wt.% of active components triazophos, 2-50 wt.% of chlorpyrifos, 2-50 wt.% of fenitrothion, 2-50 wt.% of diazinon, 10-60 wt.% of acephate, 20-60 wt.% of thrichlorfon, 5-50 wt.% of monosultap, 5-15 wt.% of emulsification, and the rest is solvent. The advantage of the composite farm pesticide is: 1) The effect is improved highly for controlling the pest of rice ash fly cootie and rice leaf folder; 2) One kind of agricultural chemicals can controlling various pests, and can prevent and control various pests at the same time. Agricultural chemicals' cost and work time being reduced. 3) High poisonous such as phosphorus methylamine insecticide can be replaced and the dosage of agricultural chemicals can also be reduced. Environment pollution and the rudimental pesticide of rice and marine lives can be reduced efficaciously. 4) The singular drug-fast capability of the pests such as rice leaf folder and rice ash fly cootie is restrained.

The invention discloses a pesticide special for a mango tree and a preparation method thereof. The pesticide is composed of the following formula components in parts by mass: 20 to 23 parts of carbendazim wettable powder, 17 to 19 parts of polyoxins, 15 to 19 parts of agricultural streptomycin, 13 to 16 parts of holly powder, 10 to 12 parts of sulfur powder, 8 to 11 parts of purslane powder, 6 to 9 parts of fenitrothion, 5 to 8 parts of isoprocarb, 4 to 6 parts of dicofol, 2 to 3 parts of folpet, 3-5 parts of mint powder, 2 to 6 parts of methomyl emulsifiable concentrates, 1 to 3 parts of metrozine, 1 to 2 parts of formalin, 2 to 4 parts of trifmine and 20 to 30 parts of water. The pesticide disclosed by the invention is stable, durable and efficient in effect, and can be used to control various diseases and pests to promote the healthy growth of the mango tree and improve the yield and quality of the mango tree.

The invention discloses a solid phase microextraction head and a preparation method thereof. A polypyrrole-ionic liquid-nitrogen doped multi-walled carbon nanotube extraction head is prepared by cyclic voltammetry by taking pyrrole as a functional monomer, and ionic liquid and nitrogen doped multi-walled carbon nanotubes as dopants. By combining the extraction with gas chromatography-mass spectrometry, an analytical method for the analysis and detection of methyl parathion, malathion and fenitrothion in food is established. Due to the large adsorption capacity and stability of IL and N-MWCNT,the sensitivity of the analysis method is improved and the analysis of the methyl parathion, malathion and fenitrothion in the food is further expanded. In addition, the PPY-IL-N-MWCNT extraction headcan also be used to detect other volatile pesticide residues.

Provided herein are synergistic herbicidal compositions containing (a) a compound of formula (I): or an agriculturally acceptable salt or ester thereof and (b) insecticides, including but not limited to, acephate, carbaryl, carbofuran, cartap, chlorpyrifos, cypermethrin, dimethoate, dinotefuran, etofenprox, fenitrothion, fipronil, imidacloprid, lambda-cyhalothrin, malathion, methamidophos, piperonyl butoxide, pymetrozine, spinetoram, spinosad, sulfoxaflor and triazophos. The compositions and methods provided herein control undesirable vegetation, e.g., in direct-seeded, water-seeded and transplanted rice, cereals, wheat, barley, oats, rye, sorghum, corn / maize, sugarcane, sunflower, oilseed rape, canola, sugar beet, soybean, cotton, pineapple, pastures, grasslands, rangelands, fallowland, turf, tree and vine orchards, plantation crops, vegetables, industrial vegetation management (IVM) and rights-of-way (ROW).

The present invention discloses a high-effective low-toxic composite pesticide containing chlorfluazuron. Its composition includes basic active component chlorfluazuron 0.1-5%, one of chlorpyrifos 4-50%, fenitrothion 4-50%, diazinon 4-40%, acephate 10-60% and trichlorfon 20-60%, adjuvant 5-15% and the rest is solvent. Said invention can obviously raise effect for controlling rice leaf roller, and can be used for high-effectively controlling pale-headed striped borer and paddy borer, and can be substituted for high-toxic pesticide.

The invention relates to the preparing method of soybean exterase which can be used in the detection of the vegetable and fruits' pesticide residue. The producing procedure comprises the following steps: choosing the high-quality soybean, pulverizing, extracting with phosphate buffer, differential centrifugation separating, salt precipitating by ammonium, purifying by ion exchange chromatography and freeze-drying. The invention has a simple and steady producing technology. It also costs less than the method of extracting pure acetylcholine exterase products. The purified product's sensitivity is more than 19 times as the sensitivity of the enzyme crude extracts. The LDC of monocrotophos, methamidophos, alkron, durshan, dantox, carbofos and chlorofos has reached 0.03125ppm. The LDC of dursan and methidathion is one thirty-second of their MRL, while the LDC of diethion, alkron and Phosalone is one sixteenth of their MRL. The invention can fill the needs of fast detection of phosphate pesticide; it can also be widely used as the enzyme labeling marker in different methods of detecting the pesticide residue.

The invention provides an insecticidal composition comprising an active compound I and an active compound II. The active compound I is chlorofluorocarbon cyantraniliprole, and the active compound II is any one selected from organophosphorus insecticides such as triazophos, fenitrothion, profenofos and pyridaphenthion, wherein a weight ratio of the active compound I to the active compound II is (100:1) to (1:100). According to the invention, the active compound I and the active compound II are subjected to binary compounding, such that the composition has a synergistic effect in controlling pests. Also, doses of the two active components are reduced. With the composition, fast effect and persistent effect are combined; resistance generation is retarded; and controlling spectrum is expanded.

The invention belongs to the pesticide filed, relates to a liquid which can be applied to ultralow volume spraying, low volume spraying, or ultralow volume static spraying so as to achieve the effective control on crop insects, and specifically relates to an ultralow volume liquid containing sulfoxaflor and organic phosphorus pesticide. The ultralow volume liquid is composed of sulfoxaflor and an active component II, and the rest being surfactant and solvent, wherein the active component II is any one component selected from the following components: fenitrothion, quintiofos, triazophos, diazinon, phoxim, sumithion, profenofos, chlorpyrifos, malathion, and isocarbophos. The ultralow volume liquid has the advantages of convenient processing, long lasting period, high work efficiency, difficult generation of drug resistance of the target insects, low environmental pollution, reduction on pesticide and water consumption, and improvement on the pesticide utilization rate; and is capable of controlling a plurality of insects on paddy rice, wheat, corn, vegetable, tobacco, tea tree, fruit tree and sugarcane through the ultralow volume spraying, low volume spraying, or ultralow volume static spraying.

The invention discloses a method for preventing and controlling insect damage of grape chlorophorus signaticollis and relates to the technical field of grape disease and insect prevention and control. The method comprises the following steps of when a grape tree is trimmed in winter, after ill branches and tendrils are trimmed off, burning the ill branches and tendrils to kill an overwintering insect source; during an adult insect emergence period, checking a fruit garden every 5 days, and if an adult insect is found, timely capturing and killing the adult insect; during a fruit tree growing period, timely trimming new withered treetops, removing the young withered treetops from the garden, and burning the new withered treetops to reduce the insect damage; when the insect damage is serious, spraying a pesticide solution, dipping cotton in one of 800 times of fenitrothion emulsifiable concentrate with the concentration of 50 percent, 2,200 to 2,800 times of deltamethrin emulsifiable concentrate and 300 times of dichlorvos emulsifiable concentrate with the concentration of 50 percent, blocking an insect hole by using the cotton, and sealing the insect hole by clay; applying an organic fertilizer, enhancing fruit garden management, and timely draining water and trimming. The preventing and controlling way to the grape chlorophorus signaticollis is reasonable, the step is simple, the problem of chlorophorus signaticollis damage can be radically solved, meanwhile, the effect of preventing and controlling the chlorophorus signaticollis is also obvious, and the healthy and strong growth of grapes is promoted.

The invention discloses a enzymoimmunoassy absorption test agent box adapted on fenitrothion remain analysis which includes a box, 96 hole or 40 hole enzyme labeling board or test tube set in the box and the antigen in the box. In each hole on the enzyme labeling board, envelope antigen which is able to unite with fenitrothion antigen, is enveloped by parisarc liquor, and then sealed with celluloid of 2 percents to 5 percents. Antigens in the box consists of washing solution, basal material dilution, fenitrothion standard solution, fenitrothion antigen (indirect ELISA), sheep rabbit antigen labeled with horse radish peroxidase (indirect ELISA), or fenitrothion rabbit antigen labeled with horse radish peroxidase (direct ELISA), basal material, coloration matter and reaction termination liquor. The invention can be used on fast detecting of fenitrothion remain in water, soil, vegetable, fruits and poisoned sample. The pre-process of the sample is simple and can detecting groups of samples at the same time. The sample detecting cost is lower than traditional detecting method.

The invention discloses a special pesticide for pear trees and a preparation method of the pesticide. The pesticide comprises the following components in parts by mass: 17-19 parts of mineral oil emulsion, 15-16 parts of imidacloprid, 13-16 parts of octyl sulfuric acid, 12-14 parts of fenitrothion, 9-12 parts of buprofezin, 7-10 parts of ziram, 5-8 parts of acephate, 4-9 parts of beauveria bassiana, 3-5 parts of beta-cypermethrin, 2-5 parts of fructus forsythia powder, 1-3 parts of abamectin, 2-3 parts of selfheal powder, 3-4 parts of houttuynia cordata powder and 20-30 parts of water. The pesticide is lasting in effect, has a wide remarkable control effect on the diseases and pests of the pear trees, and can promote the pear trees to healthily grow and increase yield.

The invention discloses a synergic composition of cantharidin and organic phosphorous insecticide, which comprises (by weight ratio) the following raw materials, cantharidin 0.1-10.0%, organic phosphor insecticide 1-40.0%, and balancing pesticide adjuvant, the organic phosphor insecticide is one selected from chlorpyrifos, quintiofos, triazophos, phoxim, profenofos, acephate, and fenitrothion.

The invention discloses an ultra-low volume liquid containing silafluofen and an organophosphorus insecticide, belonging to the field of pesticides. The ultra-low volume liquid comprises the silafluofen and an active constituent (II), which are compounded into an active constituent, and the balance of a surfactant and a solvent; and the active constituent (II) is selected from any one of fenitrothion phosphorus, quinalphos, triazophos, diazinon, phoxim, fenitrothion, profenofos, chlorpyrifos, malathion, and isocarbophos. The ultra-low volume liquid disclosed by the invention is convenient to process, low in cost, good in pesticide effect, long in lasting period, high in coordinated synergism and capable of saving water, and can be used to reduce environment pollution, improve the utilization ratio and application amount of the pesticide.

The invention relates to immunochromatography test paper for quickly detecting fenitrothion based on upconversion fluorescent nanoparticles and a preparation method thereof and belongs to the technical field of chemical identification. The pesticide test paper comprises a test paper plate, a sample dropwise-adding unit, a detection unit and a sample recycling unit. The sample dropwise-adding unit, the detection unit and the sample recycling unit are connected to the test paper plate. The detection unit is located in the middle of the test paper plate. The detection unit comprises antigen coating buffer and confining liquid. The immunochromatography test paper has the advantages that the test paper has the advantages of quickness, simplicity, convenience, specificity, sensitivity and low cost; and particularly the test paper has the characteristics of quickness, simplicity and convenience, is particularly suitable for use by vast grassroots units and field operation workers and massive tightly-scheduled detection and large-area census and the like, has huge development potential and application prospect, is taken as one of most promising novel technologies in food safety detection and has become the main development trend in food safety detection.

The present invention relates to a monoclonal antibody for detecting organophosphorus pesticide methyl parathion and application. F3A2 hybridoma cell line provided by the invention can be used in the preparation of the methyl parathion efficient identifying monoclonal antibody, and the titer measured by mouse hydroperitoneum antibody enzyme-linked immunosorbent analysis method is 1.2 * 10<4>. The anti-methyl parathion monoclonal antibody is high in sensitivity, the methyl parathion 50% inhibitory concentration (IC50) is 21.2ng / mL, the intercrossing reaction rates of the monoclonal antibody and the organophosphorus pesticides such as fenitrothion, isocarbophos, chlorpyrifos-methyl, phoxim and the like similar in structure to methyl parathion are less than 0.1%, and the monoclonal antibody can be used for rapid detection of organophosphorus pesticide methyl parathion residues.

The invention relates to an efficient pesticide composition for killing agricultural pests. The pesticide composition comprises the following components in parts by weight: 10-50 parts of fenitrothion, 20-40 parts of pyridaben and 20-60 parts of hydroprene. The pesticide composition disclosed by the invention has the advantages that the pesticide composition has an obvious synergistic effect, and is capable of reducing dosages of active ingredients, lowering usage cost, delaying disease resistance of pests and effectively reducing environmental pollution and pesticide residue; the pesticide composition has an obvious killing effect on such pests as pink rice borer, striped rice borer, tryporyza incertulas, rice planthopper, rice leafhopper, aphid, red spiders, cotton bollworm, soybean pod borer and tea geometrid; meanwhile, the pesticide composition can lower damage to environment.

The invention discloses preparation and application of a nano antibody capable of specifically recognizing fenitrothion. The amino acid sequence of the nano antibody is as shown in SEQ ID NO. 1; and the nucleotide sequence of a gene for coding the nano antibody is as shown in SEQ ID NO. 9. The nano antibody disclosed by the invention can be applied to actual sample detection of fenitrothion residues, can specifically detect fenitrothion, has the characteristics of relatively high thermal stability, organic tolerance, weak acid resistance and the like, can improve the sensitivity of fenitrothion immunodetection, and is simple to operate and relatively short in consumed time. The method for preparing the nano antibody disclosed by the invention has general applicability, can be used for screening and preparing other small molecular substance nano antibodies, and has very high application value.

The invention relates to an insecticide and particularly relates to agricultural water dispersible granules containing flufenoxuron and a preparation method of the agricultural water dispersible granules. The agricultural water dispersible granules are prepared from components in percentage by weight as follows: 2%-60% of flufenoxuron, 1%-5% of fenitrothion, 1%-10% of a dispersant, 2%-10% of a wetting agent, 1%-5% of a disintegrating agent, 0.1%-5% of polyethylene glycol, 10%-20% of ammonium sulfate and the balance of filler. The agricultural water dispersible granules have stable quality, aregood in dispersity, have a very good control effect on mites such as red spider mite and the like, have high insecticidal speed and long lasting period and can control multiple mites after being applied once, the pesticide use cost is reduced, and the toxicity of the pesticide is also relieved.