17 results about "Diquat" patented technology

The present application belongs to the field of pesticides, and particularly relates to a herbicidal composition containing a fused ring substituted aromatic compound and application thereof. The composition comprises a herbicidally effective amount of active ingredient A and active ingredient B, wherein the active ingredient A is or a salt / ester thereof; the active ingredient B is selected from one or more of the following compounds and salts / esters thereof: glyphosate, glufosinate-ammonium, glufosinate-P, paraquat, diquat, ACCase inhibitors, PPO inhibitors, etc. The composition can effectively control / eliminate grass weeds and broadleaf weeds, etc., and has the characteristics of expanding the herbicidal spectrum, reducing the application amount, being able to produce a synergistic effect and solving the problem of resistant weeds, etc.

The invention discloses a preparation method of an MF (at) NH2 (at) Ag SERS (Surface Enhanced Raman Scattering) sensor for detecting paraquat and diquat, belongs to the field of nano material synthesis and spectral analysis, and solves the problems that a traditional detection method is complicated in process and cannot detect pesticides and free radicals thereof at the same time, and a traditional SERS substrate is poor in enhancement effect and low in stability. The preparation method comprises the following steps: firstly segmenting melamine foam, cleaning and drying, soaking in hydrochloric acid, soaking in a polyethyleneimine aqueous solution to modify amino, drying, soaking in a silver nitrate solution for ultrasonic treatment, adding a sodium borohydride solution under an ice bath, stirring and reducing, and finally cleaning and drying to obtain the sensor. The sensor takes three-dimensional melamine foam as a support, silver nanoparticles are uniformly loaded on the surface of the three-dimensional melamine foam, paraquat, aquacide and free radicals thereof are enriched through electrostatic interaction based on a localized surface plasma resonance principle, and Raman signal enhancement is realized. The detection limit is 10 <-9 > mol / L, the signal stability and repeatability are excellent, the applicability to actual water sample detection is good, the detection of other pesticides can be expanded, and the method is suitable for on-site rapid trace detection.

The present invention discloses a non-bipyridyl salt herbicide and its preparation method and application, specifically, the present invention provides a dienediamine compound having the structure of Formula I or a tricyclodienepiperazine structure shown in Formula II. The non-bipyridyl salt compound can be converted to paraquat or diquat under light irradiation and air conditions, and has the same herbicidal performance as paraquat or diquat but no obvious toxicity. Therefore, the non-bipyridyl salt compound of the present invention can be used as a non-toxic substitute for paraquat or diquat as a herbicide.

The invention relates to an aquacide microsphere preparation and a preparation method thereof, aquacide is entrapped in a polylactic acid-glycolic acid copolymer carrier through a W / O / W type re-emulsification-solvent evaporation method, the microsphere preparation is prepared, slow and continuous release of drugs can be realized, the lasting period is prolonged, the drug application frequency is reduced, and the drug wastage rate and the environmental risk are reduced; meanwhile, the pesticide is in a solid state, is suitable for long-distance transportation, can be redissolved before being used, and has important practical application and commercial values.

The present invention belongs to the field of prognosis of pesticide poisoning. Specifically disclosed is a method for establishing a mortality risk prediction index for acute diquat pesticide poisoning, comprising: collecting data; establishing a mortality risk index model based on demographic characteristics and routine blood test results; and training, internally validating, and externally validating the model. The mortality risk index provided by the present invention comprehensively considers age, blood concentration of diquat, white blood cell count, and aspartate aminotransferase concentration, aiming to accurately evaluate, in the form of an index, the mortality risk of patients suffering from acute diquat pesticide poisoning. Through in-depth analysis of large-scale clinical data, the mortality risk index of the present invention possesses scientific validity and accuracy at the data level, and can also play an important role in clinical practice. Further, the present invention can be applied to construct a terminal device for predicting the mortality risk of acute diquat pesticide poisoning, assisting medical teams in more reasonably allocating medical resources and prioritizing high-risk patients, thereby improving overall treatment outcomes and the patients' chances of survival.

This invention belongs to the field of fine chemicals and discloses a method for preparing dichlorvos. The method includes: reacting 2,2'-bipyridine with a haloalcohol compound of formula I to generate a bipyridine monosalt compound of formula I; after the reaction, separating the bipyridine monosalt compound from the haloalcohol compound; using water as the reaction solvent, reacting the bipyridine monosalt compound with a hydrohalic acid under the action of a catalyst to obtain a reaction solution containing dichlorvos; adjusting the pH of the reaction solution to 4-6 to obtain a dichlorvos solution. This invention provides a novel method for preparing dichlorvos, with a simple synthetic route, high overall yield, lower total cost, and less waste generation, making it more environmentally friendly.

The application discloses a method for determining quaternary ammonium salt pesticides in blood by using liquid chromatography mass spectrometry, which draws a standard working curve of whole blood (plasma, serum) matrix by liquid chromatography mass spectrometry analysis, obtains peak areas of target quantitative ion peaks and peak areas of internal standard quantitative ion peaks of different concentrations of paraquat, diquat, wild wheat, chlormequat, and mepiquat, and then draws a standard working curve; and under the same conditions, liquid chromatography mass spectrometry analysis is carried out on whole blood sample liquid, peak areas of target quantitative ion peaks and peak areas of internal standard quantitative ion peaks in the whole blood sample liquid are obtained at the same time, and the content of each quaternary ammonium salt pesticide is calculated according to the standard working curve. The application can simply, quickly and simultaneously detect the content of five kinds of quaternary ammonium salt pesticides in whole blood of poisoned patients, and has the characteristics of simplicity, accuracy, good repeatability and high sensitivity.

The application provides a hybridoma cell strain secreting monoclone antibody of diquat and application thereof, and relates to the technical field of immune detection. The monoclone antibody secreted by the hybridoma cell strain has good sensitivity to diquat, the IC 50 1.13 ng / mL, so that the monoclone antibody can detect trace diquat. In addition, the monoclone antibody has no cross reaction to structural analogs of diquat, such as alachlor, acetochlor, butachlor, propanil, diquat and diquat, so that the monoclone antibody can accurately detect low concentration diquat.

The present invention provides a fluorescence detection method for bipyridine compounds. This method utilizes sulfonic acid groups and biphenyl structures on the surface of DSD acid-functionalized carbon quantum dots as recognition elements, enabling the DSD acid-functionalized carbon quantum dots to generate electrostatic and π-π interactions with compounds containing bipyridine structures. This static quenching mechanism quenches the fluorescence of the DSD acid-functionalized carbon quantum dots, thereby enabling the DSD acid-functionalized carbon quantum dots to act as a highly sensitive fluorescence sensor for detecting bipyridine compounds. Given the significant difference in binding ability between paraquat and DSD acid-functionalized carbon quantum dots in their excited and ground states, while no significant difference exists for diquat, the present fluorescence detection method can also be used to detect the presence of paraquat in diquat herbicide samples.

The present application relates to the technical field of agricultural product quality improvement, and specifically provides a method for improving the content of tocopherol in sesame by using diquat. It is found for the first time that diquat can improve the content of tocopherol in sesame. The method provided by the present application comprises: spraying a diquat solution 5-15 days before the harvesting of sesame; the diquat solution is a 20% diquat water agent with a volume percentage concentration of 0.167%-0.5%, and the spraying amount of the diquat solution is 10-30 L per mu. The present application provides a reference for improving the content of tocopherol in sesame in production and technical support for the creation of high-quality edible vegetable oil.

The present application belongs to the field of pesticides, and particularly relates to a herbicidal composition containing R-type pyridyloxy carboxylic acid derivatives and application thereof. The herbicidal composition comprises a herbicidal effective amount of active ingredient A and active ingredient B, wherein the active ingredient A is selected from one or more of R-type pyridyloxy carboxylic acids and salt, ester derivatives thereof as shown in formula I: wherein R1 and R2 independently represent halogen, C1-C6 alkyl, halogenated C1-C6 alkyl, C3-C6 cycloalkyl; R3 represents hydrogen, halogen, C1-C6 alkyl, halogenated C1-C6 alkyl; Q represents C1-C6 alkyl, etc.; Y represents amino, etc. The active ingredient B is selected from one or more of glyphosate, glufosinate-ammonium, endothall, paraquat or acid / salt thereof. The composition can effectively prevent various weed problems in crop fields, has the characteristics of expanding the herbicidal spectrum, reducing the application amount, being able to produce a synergistic effect and solving the problem of resistant weeds, etc.

The present application relates to the field of biotechnology, in particular to an antibody against diquat and application thereof. The present application overcomes technical barriers, and a new hapten molecule is used to prepare an antibody with high affinity to diquat, and cross interference with non-selective herbicides such as paraquat, glufosinate-ammonium and glyphosate with similar structures to diquat can be avoided, which has great significance for the immune detection of diquat.

The application provides a kind of SSZ-112 zeolite molecular sieve and its preparation method and application, it is related to the technical field of molecular sieve.The SSZ-112 zeolite molecular sieve (AFT topology) synthesized by the new double organic template system of Et6-diquat-n dibromide (n=2~10) and bromo 1-propyl-1-methyl pyrrole as organic template agent has high crystallinity, and no amorphous.The SSZ-112 zeolite molecular sieve prepared by the application has excellent carbon dioxide selective adsorption separation performance, and has a broad prospect in the field of flue gas carbon dioxide capture application.Meanwhile, the SSZ-112 zeolite molecular sieve prepared by the application also has excellent catalytic performance in the field of denitration catalysis.

The invention relates to the technical field of pesticides, in particular to a soluble concentrate containing aquacide dichloride and refined glufosinate ammonium and a preparation method of the soluble concentrate. The herbicide comprises the following components: diquat dichloride, refined glufosinate ammonium, a dispersing agent and water, the dispersing agent comprises a plant alkyl betaine mixture and alkylamine polyoxyethylene ether quaternary ammonium salt. The dispersing agent comprises a plant alkyl betaine mixture and alkylamine polyoxyethylene ether quaternary ammonium salt, and can improve the normal temperature stability of the soluble concentrate of diquat dichloride and refined glufosinate ammonium salt; the weight ratio of the alkylamine polyoxyethylene ether quaternary ammonium salt to the plant alkyl betaine mixture is 1: (2-5), so that the low-temperature and high-temperature storage stability of the soluble concentrate can be further improved.

The application discloses a kind of Au@4-MBA@Ag surface-enhanced Raman probe preparation methods, belong to nanomaterial and spectroscopic detection technical field.The probe is Au nanoparticle as core, 4-mercapto benzoic acid as intermediate layer, outside coating Ag shell, through the Au-S bond of 4-MBA is fixed in gold core, carboxyl induces Ag+ Coordination deposition, realize Ag shell controllable growth, form core-shell structure.Preparation contains Au nanoparticle, Au@4-MBA nanoparticle, Au@4-MBA@Ag probe three-step core technology, reaction condition is mild, process is easy to control.The probe uses Ag shell plasmon resonance to form electromagnetic enhancement zone, combined with the adsorption enrichment effect of 4-MBA, realize trace detection of paraquat, diquat and its free radical such as dipyridyl herbicide, with high sensitivity, high selectivity and good repeatability, detection limit is low and the requirement of sample pretreatment is low, can also be extended to other pesticide and pollutant detection, suitable for environmental and food safety on-site rapid detection.

According to the aquacide dichloride soluble concentrate provided by the invention, by reasonably selecting the variety and content of auxiliaries, the stability of a product is improved, the cold storage stability and the heat storage stability are good, the uniform state can be kept in different temperature environments, the problems of layering, crystallization / precipitation and the like are not prone to occurring, and the aquacide dichloride soluble concentrate can adapt to high-hardness water dilution. The preparation method of the aquacide dichloride soluble concentrate is simple and easy to operate, the production cost is low, and through strict quality control indexes, the impurity content in the product is effectively reduced, and the pollution to the environment is reduced. The aquacide dichloride soluble concentrate disclosed by the invention is mainly used for preventing and controlling weeds in uncultivated areas, can be quickly absorbed by green tissues of the weeds, is high in weeding speed and good in effect, has small influence on non-target organisms under a specified dosage, and meets the requirements of environmental protection and safety.

The invention relates to the technical field of defoliating agents, and particularly discloses a transplanting defoliating agent suitable for Chinese scholartree as well as a preparation method and application of the transplanting defoliating agent. The defoliant provided by the invention comprises a component A and a component B, the component A is prepared from the following components: 3 to 7g / L of ethephon, 0.1 to 0.5 g / L of Silwet L-77 organic silicon, 0.02 to 0.08 g / L of pericarpium citri reticulatae viride orange oil and 0.1 to 0.5 g / L of mineral oil; the solvent is water; the component B comprises the following components: 3-7 g / L of thidiazuron, 5-8 g / L of diquat and 0.6-1.2 g / L of an auxiliary agent; the solvent is water; the auxiliary agent is prepared by mixing Break-Thru S240 organic silicon, pericarpium citri reticulatae viride orange oil, quercetin and sophocarpine according to the weight ratio of (8 to 12): (2 to 6): (1 to 3): (0.5 to 3). The defoliating agent provided by the invention can perform directional area defoliation on Chinese scholartree, and is low in comprehensive cost, simple in use method and efficient in defoliating effect.