246 results about "Paraquat" patented technology

The invention provides a preparation method of a macroporous adsorbent resin for toxin substance adsorption, which comprises the following steps: preparing a lower-crosslinking-degree macroporous styrene-divinylbenzene resin, crosslinking the lower-crosslinking-degree macroporous styrene-divinylbenzene resin by a Friedel-Crafts process to obtain an ultrahigh-crosslinked-structure macroporous adsorbent resin, and introducing acylation reaction and grafting reaction in the ultrahigh-crosslinked-structure macroporous adsorbent resin preparation process to successfully prepare the carboxylic-acid-group-containing polyvinylpyrrolidone-grafted ultrahigh-crosslinking-degree macroporous adsorbent resin for toxin substance adsorption. The resin has the advantages of huge specific area and abundant pore structure, contains part of carboxylic acid ion groups, and is grafted by the polyvinylpyrrolidone on the resin surface. Therefore, the adsorption capacity for paraquat, acetochlor and other toxin substances containing cations or basic groups can be enhanced by utilizing the potential energy effect caused by hydrophobicity and huge specific area of the particular polystyrene skeleton of the ultrahigh-crosslinking-degree adsorbent resin, the pore screening action of the abundant pore structure and the charge action of the carboxylic acid groups. Besides, the polyvinylpyrrolidone is grafted on the resin surface to enhance the compatibility of the resin with blood.

The invention provides a pesticide adjuvant, which belongs to the field of pesticides. The pesticide adjuvant is composed of water and surfactant, wherein the surfactant is one or more selected from the group consisting of betaine, ammonium salt, amine oxide, palm kernel diethanolamide, styrylphenol polyoxyethylene ether and N-polyoxyethylated-N-tallow-alkylamine. The pesticide adjuvant has good salt tolerance and can be used both for preparation of a variety of soluble concentrate preparations of paraquat and preparation of a variety of soluble concentrate preparations of diquat and hybrid preparations of paraquat and diquat. Moreover, the pesticide adjuvant has good versatility and can realize processing of a plurality of dosage forms like a variety of aqueous solutions, soluble concentrates and soluble glues of paraquat and diquat by using different amounts of the pesticide adjuvant.

The present invention relates to a water-dispersible particle containing paraquat dichloride and a preparation method thereof. The paraquat, an active ingredient of a non-selective herbicide, is strongly adsorbed on minerals in the soil, especially supplements such as clay, bentonite, talc, pyrophyllite, montmorillonite, etc. , so it is generally known to be inactive. Paraquat is converted into a water dispersible granule type so that the dispersible granule type can be safe for humans and has excellent agrochemical effects compared to other formulation types such as soluble concentrate type or wettable powder type. The agrochemical composition of the present invention is prepared by mixing and kneading 5-50% by weight of paraquat, 5-30% by weight of surfactant, 1-20% by weight of rupture accelerator and the remainder of the extender, and the kneaded mixture is formed into granules , and these granules are dried.

The invention belongs to the field of analytical chemistry, and relates to a method and a kit for quickly detecting paraquat and/or diquat. The method includes the step of mixing a to-be-tested sample(the to-be-tested sample is a non-pretreated sample or a pretreated sample)with gold nanoparticles and a material capability of providing I<->, S< 2-> or F<->, and a surface enhanced Raman spectroscopy analysis method is used for detection. The method can quickly detect paraquat and/or diquat content in water, soil, vegetable, raw meat or biological samples, and is especially suitable for detection of the paraquat and/or diquat content in different substrates such as whole blood, plasma, urine, body fluids, tissues and the like, and the method has the advantages of simple operation, fast detection speed, high sensitivity and the like.

The invention discloses a method for measuring blood concentration of paraquat. The method comprises the following steps of: (1) pretreating a sample, namely adding aqueous solution of an internal standard substance and a protein precipitation agent acetonitrile into a plasma sample, performing whirl mixing, centrifuging and sampling supernatant; (2) separating the sample, namely adopting a universal C18 liquid chromatographic column, and using an ion pairing agent in an acid mobile phase, wherein the acid mobile phase is mixed solution of 3mmol.L<-1> aqueous solution of sodium dodecyl sulfate, 0.2 percent of aqueous solution of trifluoroacetic acid, acetonitrile and water; and (3) detecting by using a diode array detector, namely detecting by using the diode array detector at a detectionwavelength of 250 to 260nm, measuring peak areas of the internal standard substance and the paraquat, and calculating the blood concentration of the paraquat through least square method linear regression. The plasma sample is easy and convenient to pretreat, the detection process is sensitive and rapid, toxic substances and the blood concentration thereof can be rapidly determined in actual application, and the method is high in clinical application value.

The invention discloses a paraquat-glyphosate bigeminal detection card; the internal part of an outer shell has a test strip which is pasted with a nitrocellulose membrane in the middle of a supporting back plate; the two end parts are respectively pasted with an absorbent membrane and a sample pad; the inner ends are respectively overlapped with one end of the nitrocellulose membrane; a section of colloidal gold film which is a glass fiber membrane containing anti-paraquat and anti-glyphosate monoclonal antibody or polyclonal antibody colloidal gold marker is clamped between the overlapped part of the sample pad and the nitrocellulose membrane; the nitrocellulose membrane has 2 test strips which respectively contain a paraquat protein conjugate and a glyphosate protein conjugate; and a matrix pore area contains an anti-rabbit antibody or anti-mouse antibody. The sample pad and the nitrocellulose membrane respectively face a sampling hole and a detection window hole. The invention has the advantages that the paraquat and glyphosate contained in fruits, vegetables, and cereals can be simultaneously detected; the preparation is easy, the detection cost is saved, the use is convenient, the detection is rapid, the sensitivity is high and the result is accurate.

The invention relates to a preparation method of a carbon quantum dot fluorescent probe for detecting paraquat. The preparation method comprises the following two steps of firstly, accurately weighing0.03g of m-phenylene diamine, putting into anhydrous ethanol, dissolving, transferring into a hydrothermal reaction kettle with a polytetrafluoroethylene inner container, sealing, reacting for 12h ina constant-temperature drying box of which the temperature is increased to 160 DEG C by programs, naturally cooling to room temperature, fetching out, and putting the product into a beaker; adding anextender into the beaker, separating by a chromatography method, dialyzing the product by a dialysis bag, and diluting the remaining liquid by deionized water, so as to obtain the carbon quantum dotfluorescent probe with surface containing hydroxyl groups and carboxyl groups. The carbon quantum dot fluorescent probe has the advantage that when the spaces of the carbon quantum dot fluorescent probe with surface negative charges and the target molecule paraquat with positive charges are mutually approached under the mutual electrostatic function of cations and anions, the fluorescence resonance energy transfer is generated, the fluorescence intensity of the carbon quantum dot fluorescent probe is reduced, and the selective identification and sensitivity detection on the target molecule paraquat are realized.

The present invention belongs to the field of waste water treating technology. The treating process of waste water containing paraquat and cyanide includes: adding the waste water and catalyst in the amount of 0.5-10 wt% of waste water into pressured reactor; stirring and heating to 100-200 dtg.c; introducing oxidant gas to control the reaction pressure in 0.5-1.8 MPa for certain time of reaction; cooling to normal temperature and filtering the reacted liquid. The catalyst of the present invention is active carbon catalyst, which may be used as carrier with certain amount of composite metal elements loaded. The cyanide containing waste water through the treatment of the present invention is further treated in a biochemical treating system. The present invention has simple treating process, less investment in apparatus and low treating cost.

The invention provides a paraquat solid preparation and a preparation method thereof. The dosage form comprises paraquat salt solution, adsorbents, surfactants and fillers. The solid preparation is prepared by adsorbing the paraquat solution with the solid adsorbents, then adding the ground fillers to prepare a solid and then adding the surfactants, nauseants and other adjuvants. Further, the preparation method comprises the steps of improving the concentration of the paraquat solution and reducing the moisture via water absorbing treating agents and then preparing the solid preparation according to the above method.

The invention discloses a paraquat pesticide wastewater treatment process. The paraquat pesticide wastewater treatment process is characterized by comprising the following steps: carrying out oxydative degradation on CN- and organic substances in paraquat pesticide wastewater by air under action of a catalyst in an oxidization kettle with pressure of 5-7MPa and temperature of 220-290 DEG C, wherein the COD (chemical oxygen demand) and CN<-> in wastewater are greatly lowered after oxidization; then, introducing air from the bottom of an air stripping tower with the pH of 12-14 and temperature of 40-60DEG C to carry out air stripping for 3-5 hours under the action of the catalyst; recycling ammonia nitrogen in the wastewater in the form of an ammonia gas; feeding the wastewater into an evaporator, evaporating the wastewater at a temperature of 60-80 DEG C, and feeding evaporating liquor to a biochemical system to treat, and exhausting the treated liquor after reaching the standards; and cooling and centrifuging concentrated liquor to obtain solid salts which can be sold abroad, and feeding centrifugal mother liquor into a wastewater collecting tank for next evaporation. The paraquat pesticide wastewater treatment process has the characteristic that CN<-> in the wastewater can be completely removed by virtue of oxidization to provide safety guarantee for subsequent air stripping and evaporating, the ammonia can be recycled by air stripping to produce ammonia sulfate, and the salts can be recycled by evaporation so as to sold abroad, and thus, safe, low-cost and efficient paraquat pesticide wastewater pretreatment is realized, and environment-friendly pressure of enterprises is reduced.

The invention relates to paraquat-containing water dispersible granules for pesticides and herbicides, and a preparation method for the paraquat-containing water dispersible granules. The invention aims to solve the problem of animal poisoning in the processes of producing, storing and using the conventional paraquat water dispersible granules. The paraquat water dispersible granules comprise the following components in percentage by weight: 5 to 95 percent of paraquat, 0.1 to 2 percent of wetting agent, 3 to 8 percent of dispersing agent, 1 to 35 percent of disintegrating agent, 0.1 to 4 percent of stabilizing agent, 0.1 to 4 percent of adhesive and the balance of filler. The paraquat water dispersible granules with the formula have the characteristics of good weeding effect, quick disintegration, high dispersibility, light pollution to environment, safety for users, simple packaging, convenience for storage and transportation and the like in the using process.

The invention relates to a method for separating and detecting paraquat. The method comprises the following steps of: putting a gold nano channel membrane between a feeding tank and an infiltration tank of a u-shaped tank; putting strong electrolyte solution which contains a sample to be detected and has the ionic strength of between 0.01 and 0.1M into the feeding tank, and adding equivalent purewater into the infiltration tank; adding 1 to 10V of constant voltage between the feeding tank and the infiltration tank of the u-shaped tank; and detecting the concentration of the paraquat in the infiltration tank by using ultraviolet after 30 to 120 minutes. In the method, a gold nano channel membrane is prepared by a chemical deposition method on the basis of a gold nano channel membrane technology, and the effects of hydrophilcity and electrophoresis of a channel contribute to the passing of the ionic paraquat but do not contribute to the passing of atrazine molecules under the conditionof external driving force and the constant voltage. By the method, the paraquat can be separated from the atrazine molecules. The separation process is simple, the interference of atrazine is eliminated, and the detection of the atrazine is facilitated; and the method has a good application prospect.

The invention relates to a production method of a biological herbicide, belonging to the technical field of pesticide preparation preparation methods. Add biomass gasification liquid into the reaction kettle, then add special auxiliary agent according to the weight ratio of biomass gasification liquid 0.5-5%, stir evenly to obtain the product; the biomass gasification liquid is bamboo vinegar, wood Vinegar liquid or grass vinegar liquid; the special additives are SQ8208, HT201, EF8208 or EDW-518 special for paraquat, or EF8108, EDW-596 or Jixin-904 for glyphosate. The biogenic herbicide prepared by the above method has good herbicidal activity, belongs to the biocide herbicide, and has good environmental compatibility; it has high safety to agricultural products and is safe to humans; Promote plant growth; improve soil; low manufacturing price; the herbicidal effect of compound preparation with glyphosate, paraquat technical medicine or preparation is better than that of glyphosate and paraquat single agent.

The invention relates to pesticide preparations and relates to water-soluble pesticide suspension concentrate of microcapsule type, in particular to pesticide microcapsules containing any one of abamectin, lime sulphur, triadimefon, streptomycin prochloraz, carbendazim, chlorothalonil, kresoxim-methyl, thiophanate methyl, astromicin, antimycoin, hymexazol, metalaxyl, myclobutanil, moroxydine hydrochloride, dioctyl divinyltriamino glycine acetate, pyrimethanil, myclobutanil, glyphosate, paraquat, acetochlor, imidacloprid, acetamiprid, pymetrozine, thiamethoxam and pyridaben. Each pesticide microcapsule comprises a wall and a core; the core is made of effective ingredients and solvent; the wall is made of polyester material of polyelectrolyte. The pesticide microcapsules have the advantages that application cost is lowered and less pesticide is applied.

The invention belongs to the pesticide field, and discloses a tablet containing paraquat dichloride and its preparation method. The paraquat dichloride comprises the following ingredients: 0.1-95wt% of paraquat dichloride, 1-30wt% of surfactant, 1-20% of disintegrating agent, emetic triazole pyrimidone which is equal to 0.18wt% of paraquat dichloride, 1-20wt% of degradation assistant, 0.001-0.1wt% of bittering agent, 0.05wt% of pigment, 0.1wt% of odor agent and 0-97wt% of diluent. The preparation method of the tablet comprises the following steps: mixing the ingredients, pressing a mixture into sheets by a tablet press machine and drying the tablets. The tablet containing paraquat dichloride is capable of raising the security on human body, compared with other preparation types such as water aqua or powdery dosage form, the tablet containing paraquat dichloride has excellent agricultural and chemical effects.

The herbicide composition contains symmetrical triazine herbicide atrazine, simazine or propazine; amide herbicide acetachlor, butachlor, propisochlor or metoachlor; and paraquat in the ratio of 1-10 to 1-10 to 1. The herbicide composition may be compounded into water suspension, wettable powder, oil suspension, dry suspension, water dispersed granulated preparation, granulated preparation or tablet. The herbicide composition may be used directionally in preemergence or postemergence stage in corn field, sugar cane field, etc.

The invention discloses a waste water integrated treatment method of paraquat produced by cyanamideprocess, belonging to the technical field of waste water treatment. In the method, complexing agent is used for coordinately separating and recovering paraquat in waste water, a liquid membrane extraction method is used for recovering cyanide ions, double-effect distillation is used for recovering salt in the waste water, an incinerator is used for incinerating residual liquid, etc. The method has good treatment effect, high recovery rate, and can realize recycling usage of paraquat waste water resource of cyanamideprocess technique, lower pollutant in the waste water, reduce environmental pollution and lower the waste water treatment cost for paraquat manufacturing enterprises.

The invention discloses a pesticide composition containing herbicide paraquat, that is, paraquat soluble colloid and a preparation method thereof. The paraquat soluble gel is composed of the following raw materials in mass percentage: 0.1% to 30.0% of paraquat cation, 0.1% to 1.0% of emetic, 0% to 0.5% of odorant, and 1.0% of thickening synergist % to 90.0%, and the balance is water; the preparation method is to shear and mix water, emetic, odorant and thickening synergist at a temperature of 10°C to 100°C, and then add paraquat mother liquor and shear Cut and mix evenly. The preparation of the invention not only can conveniently add a liquid or paste synergist in the formula, but also avoids the pollution of toxic dust when the paraquat is made into a solid preparation. In addition, because the preparation itself is a jelly-like substance, it overcomes the shortcoming that the paraquat water preparation is easy to take orally, and has good social and economic benefits.

The invention discloses a monoclonal antibody hybridoma cell line for paraquat and application of the monoclonal antibody hybridoma cell line, and belongs to the field of immunodetection of food safety. The monoclonal antibody hybridoma cell line is obtained by screening. A monoclonal antibody secreted by the cell line is relatively high in specificity and detection sensitivity to the paraquat; the IC50 value is 0.97 ng/mL, and detection of paraquat residues in vegetables, water resources and soil can be realized; raw materials are provided for immunodetection of the paraquat residues in food;the monoclonal antibody hybridoma cell line has an actual application value.

The invention discloses a treatment method for paraquat pesticide wastewater, and belongs to the technical field of treatment of the three wastes. The treatment method comprises the following steps: carrying out ozone oxidization, concentration and crystallization, and salt-leaching, introducing ozone for 1-2 hours after adding an adsorbent to completely oxidize cyanides; adding hydrogen peroxide to promote ozone oxidization speed, adding less hydrogen peroxide and then keeping the color of the mixture stable after the oxidization is ended, filtering to remove waste residues, and directly concentrating the obtained wastewater, rinsing the obtained salt with less washing water to reach industrial salt standards. The treatment method is applied to treating the paraquat pesticide wastewater, is relatively low in treatment cost, low in equipment requirement, low in operation cost, great in value of recycled salts and suitable for wastewater treatment of small and medium-sized enterprises.

A paraquat resistance gene and a vascular tissue- and trichome-specific promoter are provided. The paraquat resistance gene and the vascular tissue- and trichome-specific promoter are isolated by identifying and analyzing genes of Arabidopsis thaliana.

The invention belongs to the field of pesticide detection, and provides a method using surface enhanced raman spectroscopy to detect paraquat. The method comprises the following steps of pretreating samples by weak anion ion exchange resin, such as fruit juice and vegetable juice, collecting an eluent, using gold nanometer particle sol as a substrate, and using the surface enhanced raman spectroscopy to detect the paraquat. The method has the advantages that the content of paraquat in the fruit juice and vegetable juice can be quickly and effectively detected, the sensitivity is high, the detection limit is low, and the paraquat with content of 0.02mug/mL can be effectively detected; the paraquat pesticide can be quickly and efficiently detected at low cost.

The invention discloses a supermolecular sensor array and a method for synchronously detecting paraquat and diquat. The sensor array comprises probes 1, 2 and 3, wherein the probe 1 is a solution prepared from safranine T and carboxymethyl-beta-cyclodextrin; the probe 2 is a solution prepared from methylene blue and carboxymethyl-beta-cyclodextrin; the probe 3 is a solution prepared from hematoxylin and carboxymethyl-beta-cyclodextrin. According to the supermolecular sensor array, multiple probes are combined into the sensor array; a fluorospectrophotometer is further combined to be capable of carrying out qualitative and quantitative analysis on two analytes at the same time; the method is simple and is accurate in result.

The invention relates to a water-soluble gel preparation containing paraquat dichloride, which belongs to the technical field of pesticide. The water-soluble gel preparation comprises 0.5 to 45 mass percent of paraquat dichloride (which accounts for 0.362 and 32.58 mass percent of paraquat cation) and 5 to 40 percent of surfactants and also comprises safe auxiliary ingredients such as emetic, warning colouration, odor agents, bitter agents and the like and the balance water. The water-soluble gel preparation containing the paraquat dichloride has the advantages that the excellent weeding activity is realized, the use method is flexible and convenient, in addition, the water-soluble gel preparation is safer to people and animals, and the production and the use are more convenient.