700 results about "Tartaric acid" patented technology

The invention discloses an environment-friendly electrolyte for anodic oxidation of titanium and titanium alloy workpieces and an electrolytic coloring method. The electrolyte comprises 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water. The electrolytic coloring method comprises the steps of pretreatment, anodic oxidation coloring and aftertreatment. The pretreatment comprises alkali washing oil removal, water washing and laser treatment; and an electrolyte mixed by 8-12 parts of lactic acid, 5-10 parts of sodium tartrate, 2-5 parts of sodium bicarbonate and the balance of deionized water is used for anodic oxidation coloring. The post-treatment comprises sealing treatment and drying. According to the technical scheme, the technical problems that the anodic oxidation coloring technology is completely free of fluorine, low in toxicity and safe to operate, and the oxidation waste liquid is free of pollution and easy to treat can be solved, existing pretreatment steps can be simplified, and meanwhile uniform coloring is achieved.

The production device comprises a base, a reaction barrel is fixedly arranged on the base, a mounting frame is fixedly arranged on the outer side of the reaction barrel, a motor is fixedly connected to the top end of the mounting frame, and a stirring device for stirring basic zirconium sulfate and tartaric acid is arranged in the reaction barrel. The feeding parts are sequentially added into the reaction barrel, and a discharging part for discharging reacted liquid is arranged in the reaction barrel; through the staggered and periodic coincidence design of discharging grooves of the inner barrel and the outer barrel in the feeding part, the rotating rod is matched to drive the outer barrel to spirally move downwards, accurate and quantitative adding of the basic zirconium sulfate solution is achieved, meanwhile, the adding time and flow of the tartaric acid solution are automatically controlled through magnetic ring adsorption of the upper barrel and the outer barrel and stored energy release of the first spring, and the feeding efficiency is improved. Manual intervention is reduced, efficiency loss caused by step-by-step feeding is avoided, and the preparation efficiency of the water repellent agent is remarkably improved.

The invention provides high-performance silver powder suitable for TOPCon battery fine grid silver paste, a preparation method of the high-performance silver powder and the silver paste, and belongs to the technical field of photovoltaic materials. The preparation method comprises the steps that a silver salt solution and a composite reducing agent are mixed, a first-stage hydrothermal reaction is carried out at the first temperature, a second-stage hydrothermal reaction is carried out at the second temperature, and silver powder is obtained after centrifugation, washing and drying; wherein the composite reducing agent is selected from a mixture of two of potassium tartrate, sodium sulfite and ferrous sulfate. According to the method, gradual growth and crystallinity improvement of silver crystal nucleuses are achieved through two-stage heating, particle aggregation or uneven morphology caused by rapid reduction is avoided, in addition, the adopted composite reducing agent combination is remarkably superior to a single reducing agent (such as ascorbic acid), and the morphology and particle size distribution of the silver powder can be more accurately regulated and controlled.

The invention discloses melogabalin besylate tablets and a preparation method thereof, a tablet core comprises melogabalin besylate, a filler, a disintegrating agent, a lubricant, a flow aid and a stabilizer, the disintegrating agent is sodium carboxymethyl starch, and the stabilizer is tocopherol and tartaric acid; on the basis of selecting sodium carboxymethyl starch as a disintegrating agent, the melogabalin besylate tablet of which the stability (especially the quality control of impurities I) is superior to that of a reference preparation is prepared by investigating the variety and the dosage of a stabilizing agent and selecting a specific stabilizing agent combination; the technical prejudice that the stability of calcium carboxymethyl cellulose is superior to that of sodium carboxymethyl starch in the prior art is overcome.

The invention relates to a super-absorbent paper diaper and a preparation method and application thereof.The super-absorbent paper diaper comprises a bottom film, a core layer, a surface layer and elastic side seals and is characterized in that the core layer is prepared from, by weight, 50-60 parts of acrylic water-absorbent resin, 20-30 parts of polyacrylamide microspheres, 20-30 parts of quaternized chitosan, 10-15 parts of modifier and 1-5 parts of catalyst; wherein the modifier is a composition of tartaric acid, 2-acrylamide-2-methylpropanesulfonic acid and N, N '-bis (acryloyl) cystamine in a mass ratio of 1: (2-3): (1-1.5). Wherein the acrylic water-absorbent resin provides basic water-absorbent capacity, the polyacrylamide microspheres enhance adsorption and prevent gel blockage, the quaternized chitosan improves antibacterial property and electrolyte adsorption capacity, the catalyst ensures that the reaction is fully carried out, and all the components of the modifier cooperate with one another to enhance hydrophilicity; the water absorption performance, the structural stability and the salt tolerance of the core layer are jointly improved.

The invention discloses a collateral-dredging and pain-relieving gel plaster and a preparation method thereof. The collateral dredging and pain relieving ointment is prepared from the following raw materials in percentage by mass: camphor, borneol, menthol, absolute ethyl alcohol, collateral dredging and pain relieving volatile oil, a surfactant, collateral dredging and pain relieving extract, tartaric acid, purified water, partially neutralized sodium polyacrylate, a cross-linking agent, an adhesive, glycerol, EDTA-2Na (Ethylene Diamine Tetraacetic Acid) and a filling agent. The plaster disclosed by the invention is high in application comfort, breathable, free from aching feeling after being uncovered, free from residue on skin and not sticky when being in contact with sweat; the use of an organic solvent is basically avoided in the production process; the matrix contains components such as water and glycerol, has the effects of moistening the skin and promoting skin hydration, and is free of irritation and sensitization to the skin; repeated uncovering and pasting can be achieved, and the viscosity influence is small.

The present invention is directed to the tartrate salt of a FAK inhibitor defined by formula I below, and the use of that inhibitor for treating a proliferative disease:

The invention discloses a neutral organic chelating cleaning agent for a boiler, and belongs to the field of chemical cleaning of boiler superheaters of thermal power plants. The cleaning agent is prepared from the following components in percentage by weight: 0.5%-5% of ethylenediamine tetraacetic acid ammonium, 0.1%-4% of acetic acid or ammonium acetate, 0.1%-3% of glycollic acid ammonium or glycollic acid, 0.1%-5% of a pH regulator, 0.1%-1% of a cosolvent, 0.2%-0.8% of a corrosion inhibitor SH369, 0.1%-0.6% of a reducing agent, 0.0%-0.3% of a defoaming agent, 0.0%-0.2% of a surfactant and 84%-93% of water, wherein the pH value of the cleaning agent is 6-8; the cosolvent is tartaric acid and / or hydroxybutyl diacid, the surfactant is nonylphenol polyoxyethylene ether, and the reducing agent is hydrazine. The cleaning agent disclosed by the invention has good dissolving capacity on oxide skin, does not generate precipitates to cause pipe blockage, is a neutral solution, is very small in corrosivity, does not generate intergranular corrosion, is beneficial to protecting various pipes of superheaters and reheaters, and is a safe and efficient superheater cleaning agent.

The invention provides a lime-sand polymerized building material for inhibiting saltpetering and a preparation method thereof, and belongs to the technical field of novel building materials, the material comprises a composite matrix material, a composite alkali activator, a slow-release organic acid microcapsule, a modified layered double-metal hydroxide and an saltpetering inhibiting auxiliary agent; the composite base material is formed by compounding fly ash and slag; the composite alkali activator is compounded by water glass and a NaOH aqueous solution; the slow-release organic acid microcapsule is prepared by coating a compound acid formed by mixing citric acid and tartaric acid with hydroxypropyl-beta-cyclodextrin and sodium alginate; the modified layered double hydroxide is prepared by calcining MgAl-LDH, then carrying out surface modification by a silane coupling agent, and then loading nano SiO2; the saltpetering inhibition auxiliary agent is compounded by phytic acid modified lignin microcapsules and thermal response carbonate; the phytic acid modified lignin microcapsule is prepared by modifying sodium lignin sulfonate with phytic acid and then coating with ethyl cellulose and polyvinyl alcohol; the thermal response carbonate is prepared by coating calcium carbonate with stearic acid.

The invention discloses an aspirin enteric-coated micro-tablet capsule and a preparation method thereof. The micro-tablet core auxiliary materials of the enteric-coated micro-tablet capsule comprise an excipient, a disintegrating agent, a stabilizer, a flow aid and a lubricant. Tartaric acid is adopted as a stabilizer of aspirin, gel silicon dioxide is adopted as a flow aid, a moisture absorption agent and a swelling agent, and a direct powder tabletting method is adopted to prepare a micro-tablet core; the invention provides the aspirin enteric-coated micro-tablet capsule which is good in powder flowability, stable and easy to control in process, good in stability, uniform in dissolution and release characteristics, stable in blood concentration and high in bioavailability.

The present invention relates to the technical field of the preparation of polyols. Disclosed are a method for preparing a bio-based polyol and a use of the bio-based polyol. In the present invention, a tartrate is selected as a first ring-opening reagent to carry out a first ring-opening reaction on an epoxy group, a second ring-opening reagent containing a secondary alcohol is then used to carry out a second ring-opening reaction, and finally, a primary alcohol is used to carry out a third ring-opening reaction on the rest epoxy group to obtain a bio-based polyol product having an epoxy value close to 0. The bio-based polyol prepared in the present invention is moderate, has a uniform distribution and a relatively low viscosity, and can replace traditional petrochemical polyols. A polyurethane coating prepared from the bio-based polyol prepared by the method of the present invention has remarkably improved performance.

The invention relates to the technical field of power electronic components, and discloses a fast charge-discharge aluminum electrolytic capacitor and a preparation method thereof. The fast charge and discharge aluminum electrolytic capacitor comprises a high-purity aluminum foil subjected to aluminum chloride-hydrochloric acid etching and oxalic acid-tartaric acid oxidation treatment, a porous electrolyte layer with the thickness of 0.015-0.020 mm, a composite organic-inorganic electrolyte and an aluminum shell packaging structure, the preparation method comprises the steps of aluminum foil processing, electrolyte cutting, winding and assembling, vacuum infusion under-0.09 to-0.095 MPa, staged aging charging under the condition of 70-90 DEG C, and finally packaging and forming. According to the method, a compact oxidation film is formed through anodic oxidation, the proportion of gamma-butyrolactone in the electrolyte is optimized, the staged voltage aging and vacuum infusion process is implemented, and the fast charging performance, high-temperature stability and overall reliability of the aluminum electrolytic capacitor are synergistically improved from the material level and the process level.

The invention belongs to the field of detection of release substances in tea leaves, and particularly relates to a method for detecting release kinetics of tea polyphenol in tea soup based on a near infrared spectrum. The method comprises the following steps: preparing tea soup samples at different time points through a gradient sampling method, determining the content of tea polyphenol as a reference value by adopting a national standard ferrous tartrate colorimetric method, and collecting spectral transmission data by utilizing a near infrared spectrometer. Preprocessing the spectrum data, constructing a machine learning model, and establishing a mapping relation between the spectrum variable and the tea polyphenol content; and evaluating model performance through a decision coefficient and a root-mean-square error, and screening an optimal prediction model. And based on a high-precision result predicted by the optimized model SVM, carrying out dynamic fitting analysis, and determining that the optimal dynamic model of tea polyphenol release is a Higuchi model. According to the method, non-invasive real-time monitoring of the tea polyphenol content is achieved, the accuracy rate of the prediction model reaches 0.99 or above, and rapid and accurate technical support is provided for tea quality evaluation and brewing process optimization.

The invention discloses melogabalin besylate tablets and a preparation method thereof, and relates to the technical field of medicines. The melogabalin besylate tablet is prepared from melogabalin besylate, a filling agent, a disintegrating agent, a stabilizing agent, a lubricating agent and an antioxidant composition, the antioxidant composition comprises tartaric acid and squalene. The preparation process is optimized, a uniform and stable solid dispersion is prepared by means of a hot melt extrusion process, and it is guaranteed that active raw materials and the antioxidant are uniformly mixed; the antioxidant composition with compatibility of tartaric acid and squalene is screened, and the stability of the antioxidant in the long-term storage process is remarkably improved.

The invention belongs to the technical field of preparation of electronic-grade tartaric acid, and particularly relates to a method for preparing a high-purity electronic-grade tartaric acid solution by using a secondary recrystallization method, which comprises the following steps: (+)-tartaric acid with the purity of 99.7% L is reacted with metal ions 1t under the condition of 90 DEG C; preparing a tartaric acid solution from 1ppt of ultrapure water, cooling to 20 DEG C, crystallizing and separating out; the sample after the primary recrystallization is treated with a solvent 1 (metal ion lt respectively) under the condition of 60-90 DEG C; 0.1 ppb of electronic grade methanol / ethanol / propanol / isopropanol and metal ions lt; 1 ppt of ultrapure water) is prepared into a tartaric acid solution, and the tartaric acid solution is cooled to 0-20 DEG C for crystallization and precipitation; after secondary recrystallization, using a solvent 2 (metal ion lt; 0.1 ppb of electronic grade methanol / ethanol / propanol / isopropanol and metal ions lt; 1 ppt of ultrapure water) is prepared into a 2%-30% tartaric acid solution, and metal ions are removed through secondary electronic-grade strong-acid cation exchange resin. The method is simple in step and easy to operate, and the maximum removal rate of metal ions reaches 99.92%.

The invention discloses a sludge synergistic curing agent based on microbial mineralization and nano-compounding and a preparation method thereof. The sludge synergistic curing agent is prepared from the following components in percentage by mass: 20%-30% of fly ash, 15%-20% of sulphoaluminate cement, 10%-15% of modified phosphogypsum powder, 15%-20% of charcoal loaded nano iron, 5%-10% of attapulgite, 6%-10% of polyaspartic acid-co-acrylamide, 4%-5% of sodium carboxymethyl cellulose, 3%-5% of silica fume, 1%-3% of magnesium carbonate and 1%-2% of tartaric acid. The sludge synergistic curing agent is used for innocent treatment of river dredging sludge and industrial sludge, and rapid dehydration and high-strength curing of sludge and long-acting stabilization of pollutants are realized through synergism of the adsorption performance of the biochar, the reduction stabilization effect of the nano-iron and the cementation effect of a composite gel system.

The invention discloses a green production process for synthesizing 1, 8-terpineol and preparing perfume-grade terpilenol by dehydrating the 1, 8-terpineol, which comprises the steps of hydration reaction, centrifugal separation, acid water recovery, by-product recovery, dehydration reaction and secondary distillation. Wherein the turpentine hydration reaction conditions are as follows: a catalyst is composed of alpha-hydroxy acid and phosphoric acid or boric acid, intermittent stirring is performed at room temperature, the reaction is performed for 2-15 days, an IBC ton barrel can be adopted as a reaction tank, and the mass yield of terpin hydrate is greater than 100%. Citric acid or tartaric acid is adopted to catalyze the dehydration reaction of terpineol hydrate, and the selectivity of terpineol can reach 91% or above. Compared with a traditional process, the method has the advantages that the catalyst is low in corrosivity and does not need an enamel reaction kettle; the reaction is carried out at room temperature, and no cooling equipment is needed; centrifuging to obtain terpin hydrate crystals without alkali neutralization; acid water is easy to recycle, and almost no wastewater is discharged; an IBC barrel is used as a reactor, so that the equipment investment is low.

The application provides a preparation method of finerenone and intermediates thereof. The application discloses a preparation method of a finerenone intermediate 5, which comprises the following steps: step 1: in an organic solvent, a resolution reaction is carried out between a finerenone intermediate 2 and D-tartaric acid diphenyl ester to obtain a resolution salt, then an acid-base reaction is carried out between the resolution salt and a base to obtain the finerenone intermediate 3; step 2: in an organic solvent, a nucleophilic substitution reaction is carried out between the finerenone intermediate 3 and triethyl orthoformate in the presence of an acid to obtain a finerenone intermediate 4; step 3: in a solvent, a hydrolysis reaction is carried out between the finerenone intermediate 4 to obtain the finerenone intermediate 5. The preparation method has the advantages of short reaction steps, high total reaction yield, simple and safe operation, simple post-treatment steps, high product purity, low production cost and suitability for industrial production.

The invention provides an organic acid excited solid waste-based cementing material, and belongs to the technical field of solid waste utilization. The solid waste-based cementing material excited by the organic acid comprises 90-105 parts by mass of a silicon-aluminum solid waste base material, 7-12 parts by mass of sulfate and 15.3-19.8 parts by mass of a composite organic acid exciting agent, wherein the composite organic acid exciting agent comprises main acid and polyacrylic acid, and the mass of the polyacrylic acid is 10%-40% of the mass of the main acid; the main acid is one or a mixture of citric acid and tartaric acid. According to the organic acid excited solid waste-based cementing material, strong base is prevented from being adopted as an exciting agent, and the defects of a strong base excitation system are avoided.

The invention belongs to the technical field of silicon material cleaning, and particularly relates to a silicon material cleaning agent and a preparation method and application thereof. The silicon material cleaning agent provided by the invention comprises the following components in parts by mass: 50-60 parts of water; 15 to 30 parts of an acidic etching solution; 10 to 20 parts of a first chelating agent; 10 to 20 parts of a second chelating agent; 0.5 to 5 parts of a surfactant; 5 to 15 parts of a builder; wherein the first chelating agent is selected from at least one of 1-hydroxyethylidene-1, 1-diphosphonic acid or ethylenediaminetetraacetic acid; the second chelating agent is selected from at least one of citric acid, gluconic acid, tartaric acid, malic acid, sodium citrate, sodium gluconate, potassium pyrophosphate and sodium pyrophosphate. The silicon material cleaning agent is used for silicon material cleaning, various metal ions can be cleaned at a time, the silicon material cleaning efficiency is improved, and the industrial cost is effectively reduced.

The present invention discloses a nicotine-tartrate complex, a preparation method and an application, which relate to the technical field of chemical synthesis. The preparation method provided by the present invention includes: Step 1: Completely dissolve tartaric acid in a protic solvent to obtain a tartaric acid solution; Step 2: Dropwise add nicotine to the solution obtained in Step 1, and stir at room temperature until a white solid precipitates. Then, add an aprotic solvent to the reaction system, and the amount of the precipitated solid increases. Continue to stir for 16-24 hours. When the amount of the white solid no longer increases, filter, and wash the filter cake with the aprotic solvent 2-3 times to obtain a white solid; Step 3: Vacuum-dry the white solid obtained in Step 2 to obtain a white solid powder of tartaric acid-nicotine salt complex. This method well solves the problems that the nicotine-tartrate complex is not easy to form a solid and the solid is not easy to dry. The obtained nicotine-tartrate complex solid is a uniform white fluffy powder, which is more convenient to use.

The present application relates to a kind of methods for removing heavy metal complex in wastewater, comprising the following steps, S1 configuration PMS composite reagent, the PMS composite reagent is made by including the following weight percentage of raw material ball milling, persulfate 50~90%, sulfite 5~30%, hypochlorite 5~20%;S2 in the heavy metal complex-containing industrial wastewater join the PMS composite reagent obtained in the S1, heavy metal in heavy metal complex is Cu, and one or several of Co, Cr, Ni, Pb and Zn, complex in heavy metal complex is one or several of EDTA, NTA, citric acid, oxalic acid, tartaric acid, sorbic acid, stirring is dissolved, and lye is added to maintain the pH of industrial wastewater to 9.5~11.0, and carries out fenton-like oxidation and breaks the complex reaction, after reaction, aftertreatment is obtained, and the regenerated water is obtained.The present application achieves the purpose of removing heavy metal complex in wastewater by the method of in-situ activation of persulfate without additional catalyst or the application of electricity, ultraviolet and other energy.

The invention relates to an anti-aging capsule compounded by PQQ and mitochondrial nutrients, and discloses an anti-aging capsule which is prepared by synergistically compounding a plurality of mitochondrial nutrients according to a scientific proportion and supplementing high-purity raw materials and slow-release dosage forms to realize energy metabolism activation and anti-oxidation synergistic intervention. Therefore, the anti-aging capsule systematically delays aging through multi-target regulation and control of mitochondrial functions. The capsule is characterized by comprising the following components in parts by weight: 1-20 mg of pyrroloquinoline quinone disodium salt (PQQ), 20-100 mg of coenzyme Q10, 50-200 mg of L-carnitine tartrate, 10-100 mg of alpha-lipoic acid, 50-300 mg of nicotinamide mononucleotide (NMN) or nicotinamide nucleoside (NR), and 10-50 [mu] g of selenoprotein or organic selenium yeast, and a capsule carrier comprises 100 mg of gelatin or a plant-derived capsule shell, 180 mg of microcrystalline cellulose, 5 mg of magnesium stearate and 5 mg of silicon dioxide.

The invention discloses a fertilizer for degrading phosphorus element residues in soil and improving the utilization rate of the fertilizer and a preparation method of the fertilizer. The invention belongs to the technical field of fertilizers, and through dipping treatment and high-temperature calcination of rice husk charcoal and a monopotassium phosphate solution, the surface of the prepared modified charcoal is rich in active functional groups, and the modified charcoal can adsorb and activate insoluble phosphorus in soil, improve the soil structure and enhance the permeability and water retention capacity of the soil at the same time; meanwhile, the phosphate-solubilizing bacillus, the pseudomonas and the arbuscular mycorrhizal fungi are compounded for use, so that the release efficiency of fixed-state phosphorus in the soil can be remarkably improved, and absorption and utilization of phosphorus by crops are promoted; citric acid, malic acid and tartaric acid are compounded for use and can form a stable chelate with metal ions in soil, the fixing effect of the metal ions on phosphorus is reduced, and the effectiveness of phosphorus is further improved; through reasonable trace element proportioning, the fertilizer can meet the requirements of crops on micronutrient elements in the growth process and promote healthy growth of the crops.

The present invention is directed to the tartrate salt of a FAK inhibitor defined by formula (I) below, and the use of that inhibitor for treating a proliferative disease.

The invention discloses a preparation process of a Baloxavir marboxil and L-tartaric acid eutectic crystal form. The X-ray powder diffraction pattern of the Baloxavir marboxil and L-tartaric acid eutectic crystal form under Cu-Ka radiation has diffraction angle 2theta values of 8.7 + / -0.2 degrees, 10.8 + / -0.2 degrees, 11.6 + / -0.2 degrees, 13.2 + / -0.2 degrees, 13.8 + / -0.2 degrees, 14.3 + / -0.2 degrees, 15.8 + / -0.2 degrees, 16.2 + / -0.2 degrees, 16.4 + / -0.2 degrees, 17.5 + / -0.2 degrees, 18.6 + / -0.2 degrees, 18.9 + / -0.2 degrees, 19.4 + / -0.2 degrees, 19.8 + / -0.2 degrees, 20.1 + / -0.2 degrees, 20.7 + / and characteristic peaks exist at the positions of 25.7 + / -0.2 degrees, 26.4 + / -0.2 degrees, 26.8 + / -0.2 degrees, 27.6 + / -0.2 degrees, 28.3 + / -0.2 degrees, 28.6 + / -0.2 degrees, 29.1 + / -0.2 degrees, 29.7 + / -0.2 degrees, 31.4 + / -0.2 degrees, 32.0 + / -0.2 degrees, 35.4 + / -0.2 degrees, 35.8 + / -0.2 degrees, 36.1 + / -0.2 degrees, 36.7 + / -0.2 degrees and 37.4 + / -0.2 degrees. The Baloxavir marboxil and L-tartaric acid eutectic crystal form provided by the invention has stable physicochemical properties, excellent solid stability and mechanical stability, and can be stably stored for a long time, the preparation method is simple and convenient, the repeatability is good, and the Baloxavir marboxil and L-tartaric acid eutectic crystal form has important application value for the development of the medicine in the future.

The invention discloses medicinal and edible monascus purpureus with high yield of lovastatin and application of the medicinal and edible monascus purpureus, and belongs to the technical field of microbial strains and fermentation engineering. The monascus purpureus M230530Z3Db6a has the following remarkable advantages that the monascus purpureus M230530Z3Db6a screened by the monascus purpureus M230530Z3Db6a has high yield of lovastatin, and the strain is safe and non-toxic; 3) the content of lovastatin can be obviously increased in the culture medium added with exogenous additives (including but not limited to glycine, galactose, burdock fructo-oligosaccharide, ammonium sulfate, tartaric acid, citric acid, ascorbic acid and other amino acids, organic acids and polysaccharides); 4) in the fermentation process of the traditional Chinese medicinal materials including the dried orange peel, the content of functional components such as total flavonoids can be remarkably increased, and the oxidation resistance is enhanced; the monascus purpureus M230530Z3Db6a has the advantages that the nutritional value of a traditional product can be improved, the product is endowed with a unique health attribute, important strain resources and technical support are provided for innovative development of monascus purpureus related industries, and the monascus purpureus M230530Z3Db6a has a wide application prospect.

The invention provides a waste potato-derived fulvic acid slow-release full-degradable mulching film as well as a preparation method and application thereof, and belongs to the technical field of agricultural environment. Waste potatoes are prepared into a solution, then the solution is compounded with potassium sulfate, tartaric acid and fulvic acid according to a certain proportion to form a mixed solution, and the waste potato source fulvic acid slow-release type fully-degradable mulching film is prepared through uniform spreading and microwave irradiation. According to the invention, resource utilization of the waste potatoes is realized; meanwhile, the prepared mulching film is good in mechanical performance, and the actual application requirement is met. The prepared mulching film has good heat preservation and soil moisture conservation effects, fulvic acid is slowly released, and the film-fertilizer dual-function effect is achieved. In addition, after the mulching film is degraded, soil components are improved.

This invention discloses a method for dissolving NiCrPSi nickel alloy samples for ICP-OES detection, comprising the following steps: mixing the NiCrPSi nickel alloy sample to be tested with hydrochloric acid aqueous solution, concentrated nitric acid, and hydrofluoric acid aqueous solution, digesting at 120-140℃ for 1.5-2.5h, and then evaporating the solution to dryness at 220-260℃; then adding nitric acid aqueous solution and heating until the solid is completely dissolved, and then diluting with water to obtain the NiCrPSi nickel alloy test solution. The dissolution method of this invention can completely dissolve NiCrPSi nickel alloy powder without elemental loss, providing an accurate sample solution for ICP-OES detection; and it eliminates the need for specialized equipment such as microwave digesters or electrothermal digesters, as well as special reagents such as perchloric acid and tartaric acid, using only conventional acid reagents and general experimental equipment, thus reducing costs, simplifying operation, and enhancing versatility.

The invention provides a preparation method of a boron adsorbent based on layered dihydroxide. The preparation method comprises the following steps: firstly, preparing layered dihydroxide LDHs from divalent metal salt M < 2 + > and trivalent metal salt M < 3 + >; then dispersing LDHs in a solvent to obtain slurry, adding a polyhydroxy organic matter into the slurry, and drying to obtain polyhydroxy organic matter intercalated hydrotalcite; the polyhydroxy organic matter is selected from meglumine, sodium gluconate, citric acid and / or tartaric acid, and finally calcining and grinding to obtain the boron adsorbent. According to the preparation method disclosed by the invention, the polyhydroxy organic matter is inserted, so that the obtained product has double effects of intercalation and surface functionalization, and active sites of reaction are increased while the interlayer spacing is increased, so that the adsorption capacity is greatly improved, and the adsorption capacity of the obtained product is remarkably higher than that of other adsorbents based on layered dihydroxide.