83 results about "Nitrate ion" patented technology

The invention discloses a compatible molybdenum-aluminum mixed acid etching solution which comprises the following components in percentage by mass: 4%-7% of nitric acid, 55%-65% of phosphoric acid, 17%-28% of acetic acid, 0.5%-3% of an oxidizing additive, 0.05%-5% of a metal corrosion inhibitor and 10%-20% of deionized water, and the oxidizing additive is ceric nitrate and at least one selected from sodium nitrate, potassium nitrate and ammonium nitrate; the etching liquid does not contain other organic components except for organic carboxylic acid and organic carboxylate. According to the compatible molybdenum-aluminum mixed acid etching solution, on the basis that ceric nitrate is introduced, the content of nitric acid is reduced, the nitrate ion concentration is increased by adding nitrate, the overall oxidation performance of an etching solution system is improved, the etching rate ratio of different metals is adjusted, CD-Bias is reduced, the etching dip angles of a molybdenum single layer and a molybdenum-aluminum laminated layer are controlled to be kept at 20-50 degrees, and the problem of aluminum thorns is solved. The invention further discloses a molybdenum-aluminum etching method based on the compatible molybdenum-aluminum mixed acid etching solution.

Semisolid supplement compositions are disclosed comprising at least one non-ester nitrate compound and at least one isolated amino acid compound. The at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound. The composition contains at least about 0.05625 mg nitrate ion (NO3−).

The invention relates to a preparation method and application of a two-dimensional ultrathin porous nitrogen-doped carbon composite material. According to the invention, a metal salt nitrate ion mediation method is adopted, and the ultrathin porous carbon nanosheet loaded with metal single atoms and metal nanoparticles is successfully prepared through decomposition of a prepolymerized dopamine-metal salt precursor. By changing the type of metal salt ligand anions, accurate regulation and control between a non-porous structure and a porous structure can be realized. Endogenous multi-scale pore defects are introduced into the surface of the carbon nanosheet, so that the impedance matching of the prepared carbon nanosheet system is effectively improved, and meanwhile, high conductivity is kept. According to the prepared material, the dielectric constant is improved by introducing a porous structure, impedance matching is optimized, and the electromagnetic wave absorption capacity is improved.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is citrulline, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3—) that is at least 0.33125 mg.

The invention relates to the technical field of analytical chemistry, in particular to an ion chromatography method for separation and detection of acetate, nitrite and nitrate ions in a complex matrix culture medium. The method mainly solves the problems of insufficient separation degree, serious matrix interference, poor detection precision and reproducibility and the like when the conventional ion chromatography technology is used for detecting a complex matrix culture medium.

The invention provides a solid electrolyte, a preparation method and a lithium battery, the solid electrolyte comprises a nitrate ion liquid-based metal organic framework C, polyoxyethylene and LiTFSI, the nitrate ion liquid-based metal organic framework C accounts for 3wt% of the polyoxyethylene, and the molar ratio of the polyoxyethylene to the LiTFSI is 10: 1; wherein the nitrate ion liquid-based metal organic framework C has a nitrogen-containing heterocyclic ring, and nitrate ions and Zn ions are coordinated on the nitrogen-containing heterocyclic ring. In the solid electrolyte provided by the invention, nitrogen-containing heterocyclic cations in the nitrate ionic liquid-based metal organic framework have a binding effect on TFSI-anions in the lithium salt, and meanwhile, dissociation of the lithium salt is promoted, so that lithium fluoride is generated in situ. Moreover, nitrate ions obtain electrons on the surface of the lithium metal negative electrode, and the electrons and lithium ions form lithium nitride in situ on the SEI layer, so that deposition of dead lithium is reduced, and finally, the interface stability of the battery is remarkably improved.

A nitrogen-based gas discharge device 100 according to one aspect of the present invention includes: a green compact 111 containing a powder of a layered double hydroxide in which nitrite ions (NO2 -) are included between layers, and a powder of a reducing agent or a precursor thereof; and a gas discharge module 110 disposed so as to cover the green compact 111 and composed at least of a film 112 that is waterproof and has water vapor permeability and gas permeability. The solubility of the reducing agent in water at room temperature is 1 g / 30 mL or more and the pH of a 0.1 (w / v)% aqueous solution of the reducing agent at room temperature is 5.1 or less. The nitrogen-based gas discharge device 100 may also include a water-containing body 120 for supplying water vapor to the nitrogen-based gas discharge module 110.

The invention belongs to the technical field of plant genetic engineering, and particularly discloses a nitrate ion transport channel gene PbrSLAH3b and application of the nitrate ion transport channel gene PbrSLAH3b in promoting growth of pear pollen tubules. The method comprises the following steps: extracting total RNA (Ribonucleic Acid) of Dangshan pears from pollen of Dangshan pears; carrying out reverse transcription on the RNA to obtain cDNA (complementary deoxyribonucleic acid); and by taking the cDNA as a template, carrying out amplification to obtain the pear pollen tube nitrate transport channel gene PbrSLAH3b, the PbrSLAH3b gene provided by the invention belongs to a slow anion channel SLAC / SLAH family member, the PbrSLAH3b is remarkably up-regulated in expression in the early growth stage of a pollen tube, and the PbrSLAH3b is positioned in a plasma membrane. The invention verifies that PbrSLAH3b can form a functional anion channel with NO3 <-> selectivity under the condition of not depending on proton gradient or phosphorylation state, and the PbrSLAH3b has relatively strong selectivity on NO3 <->. Therefore, the PbrSLAH3b gene can mediate the absorption and transport of the pollen tube to NO3 <-> and maintain the polarity growth directivity of the pollen tube, and has important application value for revealing the ion regulation mechanism of the growth of the fruit tree pollen tube and improving the reproductive development of the fruit tree.

The invention discloses a method for separating rhenium from a rhenium-rich solution containing molybdenum and tungsten. The method comprises the following steps: extracting a rhenium-rich raw material solution containing ReO4 <-> and impurity ions by using an extraction agent containing hydrophobic ionic liquid to obtain an organic extraction phase containing ReO4 <-> and a raffinate phase containing the impurity ions; wherein the solvent of the raw material solution is water, and the impurity ions comprise one or two of MoO4 < 2-> and WO4 < 2->; the hydrophobic ionic liquid is composed of positive ions and negative ions, the anions are selected from one or more of halide ions, borate anions, carboxylate anions, carbonate anions, nitrate ions, nitrite ions, sulfate anions, sulfite anions, sulfonate anions, phosphate anions, phosphite anions, thiocyanate anions and amino acid ions. The method is high in separation efficiency, simple in technological process, easy to amplify, small in extraction agent loss, capable of being recycled and suitable for industrial production.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is glutamine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3<sup2>−< / sup2>) that is at least about 0.05625 mg. A semisolid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is glutamine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the semisolid supplement composition comprises an amount of nitrate ion (NO3<sup2>−< / sup2>) that is at least about 0.05625 mg.

This material provides a useful component for increasing the content of Neisseria mucosa in the oral cavity. [Solution] An oral Neisseria mucosa increasing agent comprising a nitrate ion supply compound and one or more sugar alcohols selected from erythritol, xylitol, and mannitol as active ingredients.

The invention belongs to the technical field of forest tree genetic engineering breeding, and particularly relates to a CbuLBD19 gene for regulating and controlling root system development and nitrogen absorption and utilization of catalpa bungei and application of the CbuLBD19 gene. The nucleotide sequence of the CbuLBD19 gene is as shown in SEQ ID No.7, and the amino acid sequence coded by the CbuLBD19 gene is as shown in SEQ ID No.8. It is found that overexpression of the CbuLBD19 gene can cause reduction of the total root length and the root biomass of catalpa bungei. Meanwhile, the net absorption rate of nitrate ions in the root system, the activity of nitrate reductase (NR) and the content of amino acid are reduced, and the comprehensive expression is that nitrogen metabolism is reduced. The negative regulation and control function of the CbuLBD19 gene on the nitrogen absorption and utilization of the catalpa bungei is defined, and a technical route for improving the nitrogen absorption and utilization of the catalpa bungei by reducing the expression of the CbuLBD19 gene is provided.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is tryptophan, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3—) that is at least about 0.05625 mg. A semisolid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is tryptophan, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the semisolid supplement composition comprises an amount of nitrate ion (NO3—) that is at least about 0.05625 mg.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is beta alanine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3−) that is at least about 1 mg. A semisolid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is beta alanine, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the semisolid supplement composition comprises an amount of nitrate ion (NO3−) that is at least about 1 mg.

Semisolid supplement compositions are disclosed comprising at least one non-ester nitrate compound and at least one isolated amino acid compound. The at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound. The composition contains at least about 0.05625 mg nitrate ion (NO3−).

The invention relates to a molecular resist composition and a pattern forming method. The present invention addresses the problem of providing: a molecular resist composition having excellent sensitivity, resolution, and LWR in optical lithography using high-energy rays; and a pattern forming method using the molecular resist composition. The present invention is a molecular resist composition characterized by containing a sulfonium salt represented by the following formula (1) or (2), a salt containing a cation represented by the following formula (1-1) and a halide ion, a nitrate ion, a hydrogen sulfate ion, a bicarbonate ion, a tetraphenylborate ion or an anion represented by any one of the following formulae (1-2)-(1-8), and an organic solvent, and no base polymer is contained.

The application relates to the field of water quality detection, in particular to a paper-based nitrate ion detection chip and a preparation method and application thereof. The paper-based nitrate ion detection chip comprises a bottom plate and a paper-based layer on the bottom plate; the paper-based layer comprises a color developing area, a reduction area and a sample inlet area which are sequentially communicated; a detection reagent is pre-fixed in the color developing area, the detection reagent comprises glucose, p-aminobenzenesulfonic acid, N-1-naphthyl ethylenediamine and ascorbic acid; a reduction reagent is pre-fixed in the reduction area, the reduction reagent comprises zinc powder and cadmium chloride; the detection reagent solution is added to the color developing area and then freeze-dried, so that the detection reagent is pre-fixed in the color developing area. The freeze-drying technology is used to uniformly pre-fix the detection reagent on the filter paper, a loose structure is formed, the color developing uniformity of the detection reagent after reacting with nitrate ions can be effectively improved, and the reaction time is reduced.

A sodium nitrate nanoparticle composition for improving the germination of finger millet seeds (Eleusine coracana), comprising sodium nitrate nanoparticles dispersed in an aqueous medium, a) wherein the sodium nitrate nanoparticles are synthesized by reacting sodium nitrate and sodium hydroxide, each at a concentration of 1 millimolar or 2 millimolar in aqueous medium, b) wherein polyethylene glycol is present at a concentration of 1 percent as a stabilizing agent to prevent aggregation and maintain the stability of the nanoparticles, c) wherein the reaction mixture is continuously stirred and then stabilized at room temperature for 15 days to form stable sodium nitrate nanoparticles, d) wherein the composition is configured to enable a sustained and controlled release of nitrate ions with improved bioavailability during seed germination, while preventing rapid dissolution and leaching into the environment, and e) wherein the finger millet (Eleusine coracana) seeds with the composition lead to improved germination performance, including an optimization of the sprout-to-root ratio to about 1.04 at a concentration of 1 millimolar, an increase in carbohydrate content to up to about 0.24 milligrams per 0.5 grams per milliliter, an increase in protein content to up to about 95 milligrams per milliliter, an increase in total chlorophyll content to up to about 22.0666 milligrams per gram and the maintenance of an antioxidant capture capacity of at least 95.9 percent compared to untreated seeds.

The embodiment of the invention provides a Raman spectrum-based nitric acid concentration quantitative detection method and an online detection system. The method comprises the following steps: acquiring a Raman spectrum of a target nitric acid solution as a target Raman spectrum; searching a first characteristic peak formed by vibration of nitric acid molecules N-OH and a second characteristic peak formed by symmetrical stretching vibration of nitrate ions in the target Raman spectrum; calculating the ratio of the peak area of the first characteristic peak to the peak area of the second characteristic peak, and taking the ratio as a target ratio; and determining the nitric acid concentration of the target nitric acid solution according to the target ratio. The concentration of the nitric acid solution can be accurately measured based on the Raman spectrum.

Solid supplement compositions are disclosed comprising at least one non-ester nitrate compound and at least one isolated amino acid compound. The at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound. The composition contains at least about 0.05625 mg nitrate ion (NO3−).

This invention provides a NO based on plasma-activated water. x This invention relates to the field of industrial waste gas treatment technology, specifically to a treatment system and method for removing nitrogen oxides (NOx). x The exhaust gas; using plasma-activated water containing oxidants, spraying NO... x The exhaust gas, to absorb NO x In plasma-activated water, oxidant and NO x A redox reaction occurs, and the reaction products include water-soluble nitrate ions. This invention utilizes plasma-activated water containing an oxidant, sprayed with NO... x The exhaust gas effectively removes NO. x Meanwhile, the activation reaction module of this invention can be integrated into the industrial waste gas treatment module, realizing NO... x The removal of [the pollutant] results in zero increase in land use costs. This invention integrates a plasma-activated water device into a semiconductor plasma exhaust gas treatment system, achieving the denitrification goals of zero reagent addition, zero wastewater discharge, and zero increase in land use costs while efficiently treating semiconductor exhaust gas.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is citrulline, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3—) that is at least 0.05625 mg. A semisolid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is citrulline, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the semisolid supplement composition comprises an amount of nitrate ion (NO3—) that is at least about 0.05625 mg.

A lithium-ion battery component and method of manufacture are presented. An active material layer with a lithiophilic nitrate compound is mixed with graphite particles and coated onto a current collector. Upon polarization, lithiophilic nanoparticles form on the graphite surfaces, while nitrate anions remain in the electrode structure. The lithiophilic nanoparticles inhibit lithium plating during charging and increase electronic conductivity. The nitrate anions weaken lithium ion solvation in the electrolyte, facilitating faster lithium ion intercalation into the graphite.

This application discloses a continuous preparation method and system for nano-barium sulfate based on waste acid resource utilization and internal circulation. It belongs to the interdisciplinary technical field of industrial waste resource utilization and advanced inorganic nanomaterial preparation. It aims to solve the technical bottlenecks of traditional processes for preparing barium sulfate, such as wide particle size distribution, low purity, pollution caused by the formation of soluble barium nitrate from nitrate ions, and low resource utilization. The method uses industrial waste acid containing sulfuric acid and nitric acid and a barium source as raw materials. The two are fed into a dual-channel centrifugal atomizer for atomization, mixing and reaction. The molar ratio of sulfate ions to barium ions is controlled. After separation and washing of the reaction products, most of the acidic washing liquid is recycled for slurry preparation, a small part is bypassed for purification, and CO2 is recovered and recycled. Finally, the product is dried to obtain nano-barium sulfate powder.

This invention relates to the field of wastewater treatment technology, and more particularly to a treatment process and system for stainless steel wastewater containing transition metal ions and acids. The treatment process includes the following steps: adding sodium hydroxide to the wastewater to convert the contained transition metal ions into various hydroxide precipitates under different pH conditions, achieving separation; adding alkaline earth metal oxides or hydroxides and coagulants to the wastewater to convert the contained fluoride ions into fluoridated alkaline earth precipitates, achieving separation; first, thoroughly removing the transition metal ions from the wastewater using a cation exchange resin, then using a reduction technology to reduce sodium nitrate in the wastewater to nitrogen gas and sodium hydroxide; finally, using an evaporation technology to obtain a concentrated sodium hydroxide solution from the wastewater. The above process can not only completely remove transition metal ions, fluoride ions, and nitrate ions from the wastewater, but also recover and reuse the sodium hydroxide consumed in the acid neutralization reaction and the excess sodium hydroxide added due to the precipitation of transition metal ions.

Provided is an aluminum material provided with a corrosion-resistant film by steam treatment, which can exhibit excellent corrosion resistance. **Solution**: It relates to an aluminum material comprising a base material made of aluminum or an aluminum alloy and a corrosion-resistant film formed on at least a part of the base material. The corrosion-resistant film contains at least one kind of aluminum hydroxide oxide and an Al-based layered double hydroxide (Al-based LDH) represented below. And the Al-based LDH essentially contains an Al-based LDH whose anion component is nitrate ion. Also, in the present invention, the Al-based LDH is preferentially oriented on the (003) plane. TIFF2026049968000006.tif11149 M1 is a divalent metal element and is any one of Co, Zn, Mg, Cu, Mn, Fe, Ni, Cr, Cd, Ca, and M1 2+ is a divalent metal ion. The anion component A n- is OH - , CO3 2- , NO3 - , SO4 2- , F - , Cl - is at least any one of them.

The application discloses application of carbon fiber nanometer material in removal of nitrate ions, and is divided into the following steps: first, synthesizing tetra-para-acetylamino phenyl porphyrin; second, synthesizing tetra-para-acetylamino phenyl porphyrin cobalt; third, preparing a single-atom catalyst; fourth, performing SEM morphology characterization analysis on the single-atom nanometer material; fifth, performing electrochemical reaction and analysis; and finally, obtaining a conclusion that a monomer of the single-atom nanometer material is immobilized on the surface of carbon fiber by using in-situ deposition technology, the monomer catalyst has high catalytic activity corresponding to that of rhodium nanometer material, the price of the monomer catalyst is only about 1% of that of the rhodium nanometer material, the monomer catalyst is low in price, sewage treatment cost is reduced, and the monomer catalyst has wide application prospect.

The present invention provides a method for generating nitrite and / or nitrate ions from a nitrate ester and a method for detecting nitrate esters in a mixture by generating and detecting nitrite and / or nitrate ions.

Resin microparticles with reduced metallic and leached ion content and excellent dielectric properties are provided. Furthermore, a method for manufacturing such resin microparticles is provided. The resin microparticles of embodiments of the present invention have a total content of component A of less than 100 ppm as determined by inductively coupled plasma atomic emission spectrometry, a total content of leached ion component B of less than 100 ppm as determined by ion chromatography, and a dielectric loss tangent of 0.0050° or less at a frequency of 10 GHz. Component A includes Al, Ba, Ca, Cr, Cu, Fe, K, Mg, Mn, Na, P, S, Si, Sr, and Zn. Ionic component B includes fluoride ions, chloride ions, nitrite ions, bromide ions, nitrate ions, phosphate ions, and sulfate ions.

A solid supplement composition comprising at least one non-ester nitrate compound and at least one isolated amino acid compound, wherein the at least one isolated amino acid compound is aspartic acid, wherein the at least one isolated amino acid compound is a separate compound than the at least one non-ester nitrate compound, and wherein the solid supplement composition comprises an amount of nitrate ion (NO3—) that is at least 0.05625 mg.