10 results about "Sodium selenate" patented technology

This invention belongs to the field of waste gas treatment technology, specifically relating to an absorbent for treating organic waste gas and its preparation method. The absorbent for treating organic waste gas comprises the following raw materials in parts by weight: 10-25 parts graphene oxide, 20-30 parts catalyst, 25-40 parts functionalized ionic liquid, and 10-20 parts N-isopropylacrylamide. In the catalyst prepared by this invention, the synergistic effect of the cerium source, cobalt source, and sodium selenate forms a stable heterojunction structure through hydrothermal and thermal treatment processes, optimizing the number and distribution of catalytic active sites and enhancing catalytic oxidation capacity. After oxidation and modification, the graphene oxide enhances its dispersion stability, firmly anchoring the catalyst particles to the graphene surface and accelerating electron transfer in the catalytic reaction. This results in the prepared absorbent for treating organic waste gas possessing high adsorption capacity, efficient catalytic degradation ability, and cycle stability.

This invention provides a nano-selenium, its preparation method, and its applications, relating to the field of nano-selenium fertilizer technology. Using sodium selenate or sodium selenite as raw material A and thiol-functionalized graphene as raw material B, raw material A and raw material B are mixed and reacted for a certain period to obtain nano-selenium, which can be used in fertilizers, food anti-oxidation and preservation, industrial catalysis, or chemical analysis. This invention uses inorganic selenium and thiol-functionalized graphene as raw materials. Through a simple solution mixing, reaction, and settling process, the in-situ reduction of selenite by thiol-functionalized graphene and the stable loading of nano-selenium are achieved, completing the conversion from inorganic selenium to nano-selenium in one step without the need for reducing agents.

The application discloses a preparation method of a lysozyme-nano selenium compound and application of the lysozyme-nano selenium compound in ROS removal. To mix sodium selenite solution and lysozyme uniformly, a lysozyme-sodium selenite solution is obtained, then vitamin C is added, and the mixture is uniformly mixed under the condition of light shielding and at room temperature, the pH value is adjusted to 6.5-7.5, a red solution is obtained, and dialysis is performed, so that the lysozyme-nano selenium compound is obtained. The lysozyme-nano selenium compound has the advantages of simple process, mild preparation condition, higher stability, biological safety, efficient ROS removal in egg white, and no influence on the regulation ability of the functional property, edible quality and other characteristics of the egg white, so that the deterioration problem of the egg white in the storage process is solved. The lysozyme-nano selenium compound has good application prospect in ROS removal, and can be applied to the fields of biomedical science and material science.

The application provides a compound preparation for improving selenium enrichment capacity of peanut sprouts, and a preparation method and application thereof. The compound preparation takes water as a solvent, and contains the following components in each liter of the compound preparation: 3-30 mg of sodium selenite, 9-360 mg of 10-HDA, 0.5-5.0 g of ammonium gluconate, and 0.5-15 g of pullulan. The compound preparation can effectively increase the fresh weight of peanut sprouts, promote the growth of hypocotyls, reduce the proportion of root fresh weight in total fresh weight, and improve the selenium content and the proportion of organic selenium of peanut sprouts. In addition, the components are simple, and the compound preparation is suitable for large-scale production and application.

The application provides a precipitant for precipitating a silver base body, a preparation method and application, and the precipitant comprises potassium thiocyanate, an auxiliary complexing agent, trace rare earth elements, a synergist and trace selenium compounds; wherein the auxiliary complexing agent is at least one of pyrrolidone, N-ethyl-N-methyl aminoacetic acid or a combination thereof; the trace selenium compounds are sodium selenite or sodium selenate, the addition amount of the trace selenium compounds is 0.001%-0.05% of the total mass of the precipitant; and the mass ratio of the auxiliary complexing agent to the trace selenium compounds is 20:1-60:1. Through optimization of component allocation and auxiliary additives, rapid precipitation of silver elements is realized, and the application is suitable for various scenes such as element content analysis of silver alloy products and harmful element migration amount detection of silver tableware.

The application provides a biological fertilizer for promoting plant growth and selenium enrichment and a preparation method thereof, and belongs to the technical field of biological fertilizers.The biological fertilizer is based on dry sterilized mixed organic matter and a direct-throwing group-forming pantoea agens, and the mass fractions of N, P2O5 and K2O in the mixed organic matter are 4-8%, 1.6-3.3% and 1.6-3.3% respectively, and the biological fertilizer is characterized in that: the biological fertilizer for promoting plant growth and selenium enrichment is prepared by fermenting the mixed organic matter, superphosphoric acid calcium, sodium selenite and the direct-throwing group-forming pantoea agent after mixing, wherein the group-forming pantoea AKFX-001 is preserved in the China General Microbiological Culture Collection Center, and the preservation number is CGMCC No. 36122.The strain has the effects of resisting high-concentration selenium, converting inorganic selenium into organic selenium and promoting plant growth, and the single strain can realize the functions that can only be realized by mixed strains in the prior art, and has a good market prospect.

This invention belongs to the field of foliar fertilizer technology, and particularly relates to a fourteen-element compound foliar fertilizer, which is a water-based formulation. It consists of nutrient element components, chelating agent components, synergistic adjuvant components, and deionized water, with each component comprising 100% by mass percentage. The specific formula is as follows: Macroelements and carbon source: urea 3.0-5.0%, potassium dihydrogen phosphate 2.5-4.0%, humic acid 1.5-3.0%; Medium elements: calcium nitrate 1.0-2.0%, magnesium sulfate 0.8-1.5%; Microelements: EDTA chelated iron 0.2-0.5%, EDTA chelated manganese 0.1-0.3%, EDTA chelated zinc 0.1-0.4%, EDTA chelated copper 0.05-0.2%, boric acid 0.3-0.6%, sodium molybdate 0.02-0.08%; Beneficial elements: potassium organosilicon 0.5-1.2%, sodium selenite 0.01-0.05%; Chelating agents: disodium EDTA 0.3-0.8%, citric acid 0.2-0.5%; Synergistic agents: xanthan gum 0.05-0.15%, sodium dodecylbenzenesulfonate 0.1-0.3%, polyethylene glycol 0.2-0.4%; Balance: deionized water.

The application discloses an erbium-doped zinc selenide composite material and a preparation method and application thereof. The preparation method comprises the following steps: dissolving zinc nitrate hexahydrate and erbium nitrate hexahydrate with a molar ratio of 0.02-0.08 in deionized water; adding sodium selenite and sodium hydroxide; then adding a reducing agent, hydrazine hydrate; after hydrothermal reaction for h, washing and drying to obtain the erbium-doped zinc selenide composite material. The material is a cubic phase ZnSe structure, and the erbium is uniformly doped in the crystal lattice in a near-spherical particle shape. The application introduces rich 4f electron defect states in the ZnSe band gap by erbium doping, significantly promotes charge transfer (chemical enhancement), and improves the free carrier concentration to excite the localized surface plasmon resonance (electromagnetic enhancement), so that the synergistic effect of the two enhancement mechanisms is realized. The detection limit of the SERS substrate for methylene blue is as low as 3.24*10 ‑8 mol / L, and the enhancement factor is as high as 1.73*10 4 , which provides a new way for environmental pollutant monitoring.

The application provides a chicken feed additive and application thereof, and belongs to the technical field of feed additives.The chicken feed additive comprises the following raw materials: organic manganese, hydroxyl vitamin D, calcium hydrogen phosphate, stone powder, sodium chloride, methionine, lysine, vitamin A, vitamin D, vitamin K, vitamin E, phytase, choline, baking soda, copper sulfate, ferrous sulfate, zinc sulfate, potassium iodide and sodium selenite.The raw materials of the chicken feed additive are easy to obtain, can be directly added to conventional laying hen feed for use, are convenient to apply and controllable in cost.The additive can effectively relieve oxidative stress in the liver, reduce the level of pro-inflammatory cytokines in the liver, thereby reducing liver inflammation, and can well inhibit fat deposition.

The present application relates to a kind of production of Fermentation Medium of trichotoxin and a kind of fermentation method for improving the yield of trichotoxin, belong to biological fermentation technical field.The present application uses pea starch, glucose as carbon source, uses soybean meal, corn serum as nitrogen source, with suitable inorganic salt (sodium chloride, dipotassium hydrogen phosphate, potassium dihydrogen phosphate, ammonium sulfate, magnesium sulfate, sodium selenite), metabolic auxiliary factor (pyridoxine) and amino acid, prepare a kind of suitable for bacillus subtilis production trichotoxin Fermentation Medium, the cost of the Fermentation Medium is low, and compared with the Fermentation Medium for producing trichotoxin in prior art, the yield of trichotoxin is significantly improved, provides new train of thought for the cost reduction and benefit increase in the process of large-scale production of trichotoxin.