496 results about "Atrazine" patented technology

The invention discloses a terpolymer dispersing agent with high dispersion and stability, low preparation cost and environmental protection as well as a preparation process and applications thereof. The terpolymer dispersing agent is prepared through free radical copolymerization of acrylic acid, sodium styrene sulfonate, hydroxypropyl acrylate or 2-hydroxyethyl methacrylate, the number average relative molecular weight of the terpolymer is between 2000 and 40000, and the dispersing agent has advantages of high thermal stability, good water solubility, excellent adaptability to acid and alkali and good dispersion stability, and also has good dispersion effects to calcium carbonate, zinc oxide, barium sulfate, titanium dioxide and pesticide Atrazine water dispersible granules and fipronil water dispersible granule, and can be widely used in the pesticide, pigment, dyestuff, coal water slurry and other industries. In addition, the preparation process has the advantages of simple operation, short cycle, environmental protection and low cost, and is suitable for the industrial scale production.

An herbicidal composition containing (a) aminopyralid and 2,4-D and (b) atrazine provides synergistic control of selected weeds in corn, sorghum, sugar cane and range and pasture.

An improved herbicide composition is one kind of mixture comprising 2-(4,6-dimethoxy pyrimidyl-2-aminoformamidosulfonyl)-N,N-dimethyl nicotinamide and at least one of 1,4-D butylate, metribuzin, sulcotrione and atrazine. It has high herbicidal effect to crab grass, green bristle grass, goose grass, etc. in corn field, and its herbicidal effect is higher than that of its single component.

The invention discloses a method for preparing nitrogen-doped porous biochar by employing a molten salt-assisted high-temperature carbonization method, relates to a preparation method of porous biochar, and aims at solving the problems that an existing residual pesticide is degradation-resistant, long in residue and high in pesticide detection rate. The method comprises the steps of (1) carrying out cleaning; and (2) mixing biomass powder with a low-melting point molten salt containing a nitrogen atom evenly, carrying out high-temperature oxygen-limiting carbonization, cleaning a calcined product, and grinding and sieving to obtain the nitrogen-doped porous biochar. The prepared nitrogen-doped porous biochar is capable of adsorbing and removing atrazine of over 48% within 18h. The method is suitable for preparation of the nitrogen-doped porous biochar.

The invention provides herbicide composition containing carfentrazone-ethyl, fluroxypyr and atrazine. A weight ratio of the carfentrazone-ethyl, the fluroxypyr and the atrazine is 0.1-30: 1-30: 1-35. The herbicide composition can be used for preparing a conventional dosage form. The herbicide composition can obviously improve a pesticide effect. A control effect for grassy weeds is 85.1%-99.2%. A control effect for broadleaf weeds is 83.9%-100.0%. In the aspect of a comprehensive control effect, a control effect of the carfentrazone-ethyl is 63.2%-69.8%, a control effect of the atrazine is 48.5%-54%, and a control effect of the fluroxypyr is 41.6%-46.6%. The comprehensive control effect of the composition is 82.5%-99.9%. Therefore, the control effect of the herbicide composition is improved significantly, and synergism is significant.

The invention provides a preparation method for lamellar porous biocarbon with a good adsorption function. The objective of the invention is to overcome the problems of difficulty in degradation, proneness to migration and great harm during treatment of pesticides in water bodies in the prior art. The method comprises the following steps: 1, carrying out cleaning; and 2, uniformly mixing biomass powder with chlorine atom-containing low-melting-point molten salt, then carrying out high-temperature oxygen-limited carbonization, cleaning a calcination product and then successively carrying out grinding and sieving so as to obtain the lamellar porous biocarbon. According to the invention, when 15 mg of the lamellar porous biocarbon prepared in the invention is used for adsorbing 40 mL of an aqueous atrazine solution with an atrazine concentration of 25 to 150 mg/L, the residual amount of atrazine is less than 10% while the residual amount of atrazine in a blank control group of an aqueous atrazine solution is 80%. The preparation method provided by the invention is applicable to preparation of lamellar porous biocarbon.

The invention discloses a method for determining the biotoxicity of atrazine by utilizing microcystis aeruginosa. The method comprises the following steps: A, cultivating the microcystis aeruginosa; B, preparing microcystis aeruginosa liquid; C, determining the response time of the chlorophyll fluorescence of the microcystis aeruginosa on the biotoxicity of the atrazine; and D, drawing the standard curve for determining the biotoxicity of the atrazine by utilizing the chlorophyll fluorescence of the microcystis aeruginosa, namely adding atrazine standard liquid with series concentration into the preparation liquid of the microcystis aeruginosa, completely mixing until the 'optimum response time' determined by the step C and determining the chlorophyll fluorescence intensity of the microcystis aeruginosa; and setting three parallel samples for each concentration, setting a blank sample by substituting aseptic distilled water for the sample, calculating the photosynthetic inhibition ratio, and finally drawing the 'dose-effect relation curve of atrazine concentration and photosynthesis inhibition ratio' to serve as the standard curve for quantitatively determining the biotoxicity of the atrazine by the chlorophyll fluorescence method of the microcystis aeruginosa. The method can determine the biotoxicity of the atrazine simply, conveniently and quickly, and is low in cost and environment-friendly.

The invention relates to a herbicide composition for preventing and removing weeds in farmland, which is a ternary herbicide prepared by using rimsulfuron, nitrate sulcotrione and atrazine as activity, wherein the weight ratio of the imsulfuron, the nitrate sulcotrione and the atrazine is (1-1.6) to (1-80) to (8-640), and the preferable weight ratio is (1-1.6) to (2.5-20) to (10-160). The cumulant of the imsulfuron, the nitrate sulcotrione and the atrazine is 5-90% of the total weight of the composition. The herbicide composition has the advantages of reasonable components, good weed removingeffect, weed control spectrum expanding, the number of application reducing, control cost lowering, the generation of weed resistance slowing and good safety for crops, and meets the security requirements of pesticide formulations. The herbicide composition has a good control effect for grassy weeds and broad-leaved weeds in corn fields.

The invention discloses a halophilic bacteria fungicide as well as preparation thereof, a biological treatment system containing the fungicide and an application of the fungicide in treating triazine wastewater. The halophilic bacteria fungicide is prepared by separating and screening degrading bacteria of four triazine compounds, and preparing according to a certain proportion, wherein the degrading bacteria include (Salinicoccus roseus )BJ-1, (Brevibacterium iodinum)BJ-2, Bacillusnitritophilus BJ-3, (Halomonasalkaliphila)BJ-4. The fungicide disclosed by the invention has stronger ability of degradation on the triazine wastewater and can be adaptive to a high-salt environment, has a very good degradation effect under conditions with salt content of 1%-15% and atrazine concentration less than 500mg/l, has obvious advantages in performances of degrading the triazine compounds compared with the traditional active sludge method, and has a degradation effect of over 98% for triazine compounds in the wastewater.

The invention discloses a combined oil-suspended injection composition used for weeding, comprising the following components by weight percent: 2-20% of mesotrione, 2-10% of nicosulfuron, 15-50% of atrazine, 5-15% of emulsifiers, 1-3% of dispersant and the balance plant oil or esters of the plant oil. The composition of the invention has good synergistic effect and has especially obvious synergistic effect on broadleaf weeds. The composition also expands the weed control spectrum, reduces the drug consumption, improves the safety of the succeeding crops and can achieve stable weeding effects in arid regions or at low temperature.

The invention discloses a herbicide composition for preventing/killing farmland weeds, and application thereof, and in particular relates to herbicide composition for preventing and controlling gramineae weeds and broad-leaved weeds in cornfields. The composition is a three-element herbicide composition taking Nicosulfuron, Atrazine and Fluroxypyr as active components. The weight ratio of the Nicosulfuron to the Atrazine to the Fluroxypyr in the composition is 1-50:1-80:1-50, preferably 1-10:1-50:1-20. The composition has the advantages of having reasonable components, prevention and control effects superior to the activity when the components are applied separately, synergistic effect and high safety to the crops, expanding weed-controlling spectrum, reducing the frequency of pesticide application, reducing prevention and control cost, slowing down the resistance generation of the weeds and meeting the requirement of pesticide preparations on safety. The fresh-weight prevention and control effect of the composition on gramineae weeds and broad-leaved weeds in cornfields reaches 85.80 to 95.13 percent.

The invention provides a preparation method and an application of a biochar-Ni/Fe layered double hydroxide composite material, relates to the fields of biomass processing and biochar modification, inparticular to a preparation method and an application of modified biochar and aims to solve the problem of poor adsorption performance in the process of removing pesticides and other organic pollutants in/from water bodies in the prior art. Biochar and a layered double hydroxide material are composited, thereby fully playing respective functions and generating superposition effects. The biochar-Ni/Fe layered double hydroxide composite material is used for adsorption of organic pollutant atrazine, except heavy metals.

The invention discloses a weeding composition containing atrazine and mesotrione and application thereof. The composition takes the atrazine and the mesotrione as effective active ingredients. The weeding composition can effectively prevent and eradicate barnyard grass, crab grass, green bristlegrass and other annual weeds in maize fields, and has the control effect obviously higher than that of a weed killer singly using the atrazine or the mesotrione. In addition, with the composition, the pesticide effect is improved, the dosage is lowered, the economic cost is saved, the application dose of each active substance is greatly reduced, the residual in the environment is reduced, the production of herbicide resistance of weeds is delayed at the same time, the service life of the composition is prolonged, and thus the composition has important ecological significance and environmental protection significance.

The invention provides a maize machine direct sowing method under the condition of smashed wheat straw incorporation in the Shajiang black soil area. The method comprises the steps that wheat straw is harvested; the obtained wheat straw is smashed by means of a straw smashing device and then uniformly scattered, and covers the ground surface; base fertilizers with the nitrogenous fertilizer as a main is applied on the soil with the smashed wheat straw; maize sowing is conducted; after sowing or around stem pushing, ditching is conducted in an interlacing mode; 40% of Acetochlor Atrazine or 48% of ametryn and 50% of acetochlor and other or other weed killers are mixed with water for closed weeding; from the stem pushing period to the small horn mouth period of maize, nitrogenous fertilizer topdressing is conducted, and secondary nitrogenous fertilizer topdressing is conducted in the big horn mouth period. The inventor continually verifies and improves the method through field trials on different test field in nearly ten years, the results show that by means of the method, it can be ensured that the yield of maize is not affected in the wheat straw incorporation process, and even the yield is improved, and the greatest concern of farmers about reduction of the yield in the early incorporation stage is solved.

The invention provides an arbuscular mycorrhizal fungus for repairing atrazine-contaminated soil and relates to a microorganism, in particular to an arbuscular mycorrhizal fungus, solving the problem that the effect of the existing method adopting organisms to repair the atrazine-contaminated soil is unsatisfactory. Moses sacculus mildew HDSF1 is preserved in the Common Microorganism Center of China Committee for Culture Collection of Microorganisms, with the preservation number of CGMCC No. 3012. After the Moses sacculus mildew HDSF1 is inoculated in the soil contaminated by atrazine, the growing trend of a crop plant sown on the soil is good, and the biomass is obviously higher than that not inoculated with the repairing arbuscular mycorrhizal fungus of the invention; and the residual quantity of the atrazine in the soil is greatly reduced. In the arbuscular mycorrhizal fungus for repairing the atrazine-contaminated soil, the Moses sacculus mildew HDSF1 is not influenced by indigenous microorganism contamination in the repaired soil, and the anti-interference property is strong; and under the condition that the concentration of the atrazine in the soil is lower, favorable biological degradability can still be kept, and the biological activity is kept.

The invention provides a chloride modified gold nano-channel membrane for detecting atrazine and a method for detecting the atrazine by using the gold nano-channel membrane. In the invention, polycarbonate membrane is taken as basilar membrane, Au nano-channel membrane with the diameter of 20-50 nm is prepared by using a chemical precipitation method, and chloride ions self-assembles to the pore wall of the gold nano-channel through a gold-chloride covalent bond. The detection method comprises the following steps of: placing the chloride modified gold nano-channel membrane between a sample injection pool and a transmission pool; adding a buffer solution containing atrazine antibody into the sample injection pool; adding a buffer solution into the transmission pool; maintaining a parallel liquid level of the two pools; applying voltage on the two pools and measuring basement currents; adding a buffer solution containing a sample to be tested into the sample injection pool and carrying out a current signal test through a electrochemical workstation, wherein if current undershoot occurs, the sample to be tested contains the atrazine. The invention has the advantages of high detectionefficiency, strong specificity, capability of measuring the atrazine with the concentration lower limit of 1.7*10-10 M, and better application prospect.

The invention discloses a topramezone-containing herbicide composition for a corn field. The composition consists of topramezone, mesotrione and atrazine; the weight ratio of topramezone to mesotrione to atrazine is (0.5-40): (1-40): (5-80); the sum of the contents of topramezone, mesotrione and atrazine is 5-85 percent of the total weight of the composition. The composition can be prepared into a suspending agent, water dispersing granules, wettable powder or a dispersible oil suspending agent which is available in agriculture. The components of the composition are reasonable in mixing and an outstanding synergism effect is achieved; the prevention and treatment effect on weeds in the corn field is enhanced, the prevention and treatment spectrum for the weeds in the corn field is expanded, the pesticide application period is prolonged, and the pesticide use cost is lowered; the prepared dose form is high in safety to corns; the composition has a relatively good prevention and treatment effect on grassy weeds and broadleaf weeds in the corn field.

The invention discloses a high-efficiency bacterial strain for degrading herbicide atrazine and a function thereof, which belong to the technical field of biodegradation for chemical herbicides, and relate to an indigenous bacterial strain and the degradation of the herbicide atrazine thereof. The bacterial strain is a shinella sp.HBZA0511 bacterial strain, which is preserved in the Centre of General Microbiology of China Committee for Culture Collection of Microorganisms (CGMAA), has a preserving number of CGMCC No.1801, and can be used for in-situ quick fix engineering for herbicide pollution of soil.

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 herbicide containing topramezone and atrazine. The herbicide is a two-member herbicide composition with topramezone and atrazine as effective components, wherein the weight ratio of the effective component topramezone to the effective component atrazine is 1:15; the herbicide can be prepared into any allowed dosage forms in agriculture. The herbicide is used for preventing and removing weeds in corn fields, has significant synergic effect compared with alone application of the components, can broaden weed killing spectrum, reduces preventing and removing cost, retards generation of weed resistance, and has good safety to crops.

The invention relates to application of a catalyst to water treatment, in particular to a metal composite in-situ nitrogen-doped carbon microsphere catalyst and application thereof and aims to solve problems of low catalytic rate, high feeding quantity and poor treatment effects in application of a carbon material prepared according to an existing preparation method to catalytic oxidation treatment of polluted water. A method includes: firstly, preparing in-situ nitrogen-doped carbon microspheres; secondly, modifying the in-situ nitrogen-doped carbon microspheres to obtain the metal compositein-situ nitrogen-doped carbon microsphere catalyst. The metal composite in-situ nitrogen-doped carbon microsphere catalyst has advantages of high rate and effectiveness in degradation of organic pollutants; in degradation of atrazine, complete reaction can be realized by catalyzing of persulfate for 15min. The metal composite in-situ nitrogen-doped carbon microsphere catalyst is obtained.