126 results about "Selenious Acid" patented technology

By using the soluble salt of transition metalz Zn, Cd, Pb, Mn, Co, Ni, Cu, Ag, Sb and Bi, selenious acid or its solutl salt, or antimonous acid or its soluble salt as raw material, and hydrazine hydrate, sodium borohydride, potassium borohydride, hydroxylamine or hydrazine sulfate as reductant, and through hydrothermal reduction reaction at 100-200 deg.c in a sealed container for 2 hr to 5 days, selenides or tellurides of the said metals as semiconductor material may be synthesized. Unlike available synthesis process, which needs high temperature, toxic feedstock and complex technological course, the present invention has the advantages of low-cost material, simple apparatus, easy control, good technological reproducibility, stable product quality, etc.

The invention relates to a fertilizer formula and an application method of the fertilizer. The selenium-iron-zinc-enriched organic-inorganic fertilizer for producing selenium-iron-zinc-enriched rice is prepared by granulating proportionally mixed selenite, ferrite, zinc salt, nitrogen fertilizer, phosphate fertilizer, potash fertilizer, polyaspartic acid or other salts, decomposed organic fertilizer and silicon fertilizer. The fertilizer is applied to the field as a base fertilizer or supplementary fertilizer 1-4 times. The fertilizer can simultaneously provide selenium, iron and zinc and other nutrient reinforcing substances required by growth of crops. The fertilizer is beneficial to growth of the crops, enhances the absorptivity and conversion rate of selenium, iron and zinc, and can produce selenium-iron-zinc-enriched rice satisfying the Food Standard.

The invention relates to a formula of a fertilizer, and a using method for the fertilizer. A selenium and ferrum-enriched organic inorganic fertilizer used for producing selenium and ferrum-enriched rice is prepared by mixing selenite, ferrite, a nitrogen fertilizer, a phosphate fertilizer, a potash fertilizer, a decomposed organic fertilizer and a silicon fertilizer in a ratio, and granulating. The selenium and ferrum-enriched organic inorganic fertilizer is prepared from the following components in part by weight: 0.004 to 0.010 part of selenite, 1 to 5 parts of ferrite, 15 to 33 parts of nitrogen fertilizer, 12 to 24 parts of phosphate fertilizer, 10 to 17 parts of potash fertilizer, 0.02 to 0.08 part of sodium of polyaspartic acid or salt thereof, 30 to 50 parts of decomposed organic fertilizer and 5 to 8 parts of silicon fertilizer. The fertilizer contains selenium and ferrum, also contains other nutritional fortification substances required by growth of crops, can simultaneously provide selenium, ferrum and nutritional fortification substances required by the growth for the crops, contributes to the growth of the crops, improves the absorption rate and conversion rate of the selenium and the ferrum, and achieves an effect of producing the selenium and ferrum-enriched rice reaching the selenium and ferrum-enriched rice standard by applying a small amount of selenium and ferrum.

The invention discloses a method for biosynthesizing nano-selenium through bacillus licheniformis. The method comprises the steps of slope seed culture, first-level seed culture, second-level seed culture and fermentation production. The selected bacillus licheniformis can resist high-concentration selenite and can resist sodium selenite with the highest concentration of 2000 mg/L. The efficiency of converting the sodium selenite into red active nano-selenium reaches up to 80% or above. The bacillus licheniformis belongs to probiotics, is safe to use and can be directly used as a feed additive to be added into livestock and poultry feed, and selenium-enriched meat food can be produced for people by feeding livestock and poultry with the nano-selenium produced through the bacillus licheniform. According to the selected bacillus licheniformis, the requirements for culture media and culture conditions needed during culture are low, the culture cost is low, and the method for biosynthesizing the nano-selenium through the bacillus licheniformis has the advantages that operation is easy, preparation is convenient and the cost is low, and is applicable to industrial large-scale production.

The invention relates to a production method of selenium-iron-zinc-rich rice, in particular to a production method of preparing the selenium-iron-zinc-rich rice through applying selenium-iron-zinc-rich organic and inorganic special fertilizers. The production method of organic selenium-iron-zinc-rich nutrition enhanced rice sequentially comprises the following steps of: seed selection, seedling culturing, field cultivation, rice seedling transplanting, field management, harvesting and processing, wherein the field management comprises fertilization, the applied fertilizers are the selenium-iron-zinc-rich organic and inorganic special fertilizers, the number of fertilization times is 1 to 4, and the selenium-iron-zinc-rich organic and inorganic special fertilizers comprise selenite, ferrite, zinc salts, nitrogenous fertilizers, phosphatic fertilizers, potash fertilizers, polyaspartic acid, polyaspartate, decomposed organic fertilizers and silicon fertilizers. Through the application of the selenium-iron-zinc-rich fertilizers, selenium, iron and zinc elements and other nutrition enhanced substances required by growth are simultaneously provided for crops, the application of the fertilizers is favorable for the crop growth, the absorption rate and the conversion rate of selenium, iron and zinc are improved, and the selenium-iron-zinc-rich rice conforming to the food standard is produced.

The invention provides a coumarin dyestuff linked by naphthene ketones, method for synthesis and use, wherein the method employs the conventional hydroxyaldehyde condensation reaction and consists of, charging naphthene ketone, corresponding aldehydes with A1 groups into reactor, obtaining semi-naphthene ketone dyestuff with A1 groups, subjecting corresponding third position methyl substituted or fourth position methyl substituted coumarin having A2 group and selenious acid in another catalyst case to obtain coumarin aldehyde having A2 group, subjecting the A1 group semi-naphthene ketone dyestuff and A2 group coumarin aldehydes to reaction at the presence of mixed solvent of dimethylbenzene and alcohol, thus obtaining coumarin type dyestuffs coupled by naphthene ketones.

The invention discloses a limbal stem cell serum-free medium, consisting of the following raw materials (calculated by weight percent): DMEM/F12 60ml-90ml, BSA 0.5g-4g, EGF 1Mug-4Mug, insulin 0.1mg-1mg, hydrogen 20ug-100ug, cholera toxin 1ug-10ug, transferrin 0.1mg-1mg, selenious acid 0.1ug-1ug, GCLCM 10ml-40ml, penicillin 5*103IU-2*104IU and streptomycin 5*103IU-2*104IU. The invention adopts the method that the culture medium is added with fibroblast conditioned medium, and the nutritive factors are supplemented with the hormone and cytokine combination, fibroblast conditioned medium and BSA. As a result, the nutritive needs for long-time in-vitro expansion and cultivation of the limbal stem cell serum-free medium are satisfied, and the medium is serum-free and suitable for commercial production.

The invention belongs to the technical fields of selenium-containing fruit stem smears for fruits and vegetables, preparation processes and use methods thereof and discloses a selenium-containing fruit stem smear for f fruits and vegetables as well as a preparation process and a use method thereof. The selenium-containing smear is characterized by comprising the following materials by weight: 100kg of refined wool oil, 6.5-13 kg of refined food-grade compound amino acid powder, 0.06-0.6 kg of pure selenium contained in selenite or selenic acid and 10-13.5 kg of water. The materials are chelated and homogeneized, so that the selenium-containing fruit stem smear for fruits and vegetables can be attached to the fruit stems for a long term and can not be taken away by wind and rain; since theselenium element is directly absorbed by fruits without being consumed by other parts of plants, absorption rate is improved so that the fruits and vegetables which have stems contain high selenium contents; and the preparation method and use method are convenient for operation and are beneficial to popularization.

The invention discloses a potassium-containing selenium fertilizer for promoting plant growth and deteriorating pesticide residue. The potassium-containing selenium fertilizer adopts the technical scheme that selenious acid is generated firstly and then neutralized by potassium hydroxide so as to obtain potassium selenite. According to the deterioration requirement of different crops and different pesticides, the potassium selenite is prepared into the selenium fertilizer of 'potassium selenite kind' with the pH value of 7.2 to 8.5, and the concentration of 100 ppm to 500 ppm. The potassium-containing selenium fertilizer substitutes sodium selenite (sodium is a redundant element in the fertilizer) to serve as the selenium fertilizer which is sprayed on the leaves of the plant, so that the dual manurial effect of the selenium fertilizer and a common potash fertilizer can be achieved. After the leaves of the plant are sprayed with the fertilizer, the plant can be harvested at different time intervals, so that the effects of increasing the yield and deteriorating pesticide residue can be achieved.

The invention relates to a process for synthesizing 3- or 4- carbonyl substituted coumarin connected by naphthenones and its use. The preparation process using general aldol condensation reaction comprises cyclanone and its corresponding aldehyde compounds with A1 group are added in reactor to produce semi-cyclanone with A1 group; 3- or 4- acetyl substituted coumarin with A2 group and selenious acid are added in another reactor to produce coumarin aldehyde with A2 group; said semi-cyclanone with A1 group dye reacts with coumarin aldehyde with A2 group in the presence of xylene and ethanol mixed solvent to form 3- or 4- carbonyl substituted coumarin connected by naphthenones. The product can be used for visible light polymerization of olefine monomer in photosensitized initiation system and used as photo curing materials, etc.

The invention discloses a method for preparing nanometer monomer selenium via coupling liquid amino acid, comprising that at normal temperature and normal pressure, adding vitamin C solution into amino acid solution, mixing uniformly and adding selenious anhydride or selenite solution until the product has held red, to obtain the liquid coupled product of amino acid and nanometer selenium. The nanometer monomer selenium can be used as medical health-care product to display the cooperation between amino acid and nanometer selenium, while the nanometer selenium gel has small diameter, narrow distribution and liquid storage, to develop oral, injection or the like.

The invention relates to a production method for selenium-rich iron-rich rice, in particular to a production method for preparing the selenium-rich iron-rich rice by applying selenium-rich iron-rich organic inorganic special fertilizer. The production method for the organic selenium-rich iron-rich nutrition enriched rice sequentially comprises the following steps of: selecting seeds; raising rice seedlings; plowing the field; transplanting the rice seedlings; performing field management; harvesting; and processing, wherein the field management comprises fertilization; the applied fertilizer is selenium-rich iron-rich organic inorganic fertilizer; the fertilizing times are 1 to 4; and the selenium-rich iron-rich organic inorganic fertilizer comprises selenite, ferrous salt, nitrogen fertilizer, phosphate fertilizer, potassium fertilizer, polyaspartic acid or salt thereof, composted organic fertilizer and silicon fertilizer. By the production method, the conventional general method for producing the selenium-rich iron-rich rice mainly by spraying a selenium/iron-containing solution or selenium/iron-containing foliar fertilizer in flowering stage and the seed mature stage of the rice or adding the selenium/iron-containing solution in the rice processing process is changed and unsafe factors in preparation of the selenium/iron-rich rice are avoided. The production method is economic, efficient and pollution-free.

The invention provides a soil oxidization-solidification and stabilization remediation agent and an application method of the soil oxidization-solidification and stabilization remediation agent. The soil oxidization-solidification and stabilization remediation agent comprises zero-valent iron, silicate and calcium oxide, wherein zero-valent iron, silicate and calcium oxide are independently packaged. By means of the process of activation of molecular oxygen in zero-valent and a disilicate system, oxidizing removal of organic matter in contaminated soil is achieved, and the interference of the organic matter to the soil solidification and stabilization process is reduced. Meanwhile, the mobility of reducing substances possibly existing in heavy metal contaminated soil, such as arsenious acid groups, selenious acid groups and sulfur ions is greatly reduced through oxidization. Then calcium oxide/calcium hydroxide is added, and stabilization and immobilization of heavy metal ions such as copper, lead, cadmium and mercury are achieved through iron minerals formed by residual zero-valent iron and calcium silicate compounds. The soil oxidization-solidification and stabilization remediation agent can conduct oxidization-solidification and stabilization on the heavy metal contaminated soil or organic matter and heavy metal combined contaminated soil with different contamination degrees, and products formed after solidification and stabilization can be used for backfilling or other purposes.

The invention discloses a controlled-release zinc magnesium selenium phytate fertilizer and a preparation method thereof. The fertilizer is prepared by the method which comprises the following steps: firstly, dissolving a phytic acid and a selenious acid in water to prepare aqueous solution and heating the aqueous solution; secondly, orderly adding zinc oxide and magnesium oxide into the prepared aqueous solution with stirring to perform reaction at the temperature of 40 to 85 DEG C for 2 to 5 hours; thirdly, mixing and uniformly stirring magnesium potassium chloride and calcium superphosphate to obtain a mixture, adding the product prepared in the former step into the mixture and uniformly stirring the mixture; and finally, granulating, drying and coating the obtained product to obtain finished products. The fertilizer can be simultaneously applied together with a basal fertilizer, meets the multiple-absorption requirements of crops, decreases labor intensity, and fulfills the aim of maximally storing the trace elements in fruits of the crops and meets the requirements of human bodies or animal bodies on the intake of trace elements because the trace elements in the fertilizer can be released after the fertilizer is applied for a certain time.

The invention discloses a method for the Radix Platycodonis polysaccharide regulated preparation of a nutritional liquid fertilizer containing nano-selenium. The method comprises the following steps: preparing a nano-selenium solution from Radix Platycodonis polysaccharides and seleninic acid by using an ascorbic acid reduction technology; preparing a soybean meal composite amino acid stock solution from soybean meal by using a sulfuric acid hydrolysis technology, adsorbing and decolorizing the stock solution by active carbon modified through 0.25% KOH solution treatment, filtering the stock solution, sterilizing the obtained filtrate by cobalt60 to prepare a soybean meal composite amino acid solution; and uniformly mixing magnesium sulfate, zinc sulfate, manganese sulfate, ferrous sulfate, borax, copper sulfate, sodium molybdate, silica, Arabic gum and water with the nano-selenium solution and the soybean meal composite amino acid solution to prepare the nutritional liquid fertilizer containing nano-selenium. The soybean seed composite amino acid solution and trace elements are compounded to make the trace elements exist in a chelated state, so the utilization rate of the trace elements is increased, the absorption of the plants to macro-elements is promoted, the crop yield is increased, and the crop quality is improved.

The present invention relates to the field of environmental protection, and in particular to a leaf surface barrier for ac- curately controlling cadmium absorption and transport related gene expression in rice, and an application thereof. The present inven- tion comprises: reducing a raw material, i.e., selenious acid or selenite, by using ascorbic acid to generate a nanogel, and then emul- sifying the managed for peptization to obtain a leaf surface barrier for accurately controlling cadmium absorption and transport re- lated gene expression in rice; and then mixing the leaf surface barrier with a silica sol to obtain a composite selenium and silica sol leaf surface barrier. The present invention also provides a leaf surface barricading method for accurately controlling cadmium ab- sorption and transport related gene expression in rice. By applying the leaf surface barrier, the silica sol or the composite selenium and silica sol leaf surface barrier having a particular atomization degree and a particular contration by means of foliar spray dur- ing a particular growth period of rice and within a particular time, the cadmium accumulation in rice can be effectively reduced. Ap- plying the present invention to a moderately or lightly polluted field can enable cadmium content in rice to satisfy the food hygiene standards, and therefore is significant for achieving the safe use of the large area of field polluted by heavy metal cadmium in China.

The present invention features that the healthy milk cow beginning to milk is fed first with then with common feed adding concentrated feed I in the amount of 0.5 kg/day for 7-10 days, then with common feed adding concentrated feed II in the amount of 0.5 kg/day for 7-10 days and with common feed adding concentrated feed III in the amount of 0.5 kg/day in the rest milking period. Thus, selenium-rich milk is produced. The concentrated feed I consists of bean cake, wheat bran, table salt, potassium chloride, corn powder and zinc protein powder; and the concentrated feed II and the concentrated feed III have selenious acid or sodium selenite added on the basis of material composition of concentrated feed I.

The invention relates to an environment-friendly room temperature no-slag colorful chemical conversion solution and a process thereof; the process is characterized in that the carbon steel is arranged and treated in bath solution with the temperature of 10-31 DEG C which contains 3.8-10.3g/L of zinc phosphate, 4.0-15.0mL/L of phosphoric acid, 0.6-2.8g/L of manganese salt, 1.8-6.0g/L of sodium phosphate, 4.1-8.4g/L of organic acid salt and 0.6-4.6g/L of accelerator and has the pH value of 2.5-3.2 for 8-30 minutes, washed by tap water and dried, thus forming a uniform and compact colorful chemical conversion film on the surface of the carbon steel; the conversion film has excellent decoration performance, anti-corrosion performance and subsequent manufacturability. The conversion solution and the process excellently solve the problem of heavy pollution and large energy dissipation during phosphating at high and intermediate temperature and bluing at high temperature, and also solve the problems of environment pollution, harm on the health of operators, bad anti-corrosion performance of the blued film, bad adhesion of the substrate and the blued film, and the like due to selenious acid and copper ions in blued solution at normal temperature and hexavalent chromium ions in oxidation passivation solution.

The invention relates to a method for synthesizing polysaccharide selenious acid ester by microwave assistance, which comprises the following steps of adding potentilla anserina polysaccharide or sand sagebrush polysaccharide with the purity of more than 90 percent into a vessel, adding saltpeter solution, stirring at the room temperature and setting aside overnight to obtain potentilla anserina polysaccharide or sand sagebrush polysaccharide suspension liquid A; putting the suspension liquid A into a microwave reaction instrument, adding barium chloride and selenious acid, heating up and reacting for 0.5-4h under the microwave condition and cooling to the room temperature to obtain suspension liquid B; decompressing and filtering the suspension liquid B, adding sulphuric acid in the filtrate to generate white precipitate, removing the white precipitate and regulating pH of supernatant fluid by sodium hydroxide to obtain a matter C; putting the matter C in a dialyzing bag to be dialyzed, decompressing and concentrating the solution in the dialyzing bag after the solution is detected to have no red by ascorbic acid solution, adding ethanol, precipitating, setting aside, centrifugating, collecting precipitate at the lower layer, freezing and drying to obtain potentilla anserina polysaccharide selenious acid ester or sand sagebrush polysaccharide selenious acid ester. The invention has the advantages of controllable reaction conditions, good repeatability, short reaction time consumption and low energy consumption.