15 results about "Potassium iodate" patented technology

The application provides a skin interstitial fluid miRNA multicolor visualization semi-quantitative detection method, which comprises the following steps: incubating a skin interstitial fluid sample with magnetic nano probes of surface immobilized hairpin probes H1, opening H1 and triggering a subsequent hybridization chain reaction of hairpin probes H2 and H3 in the presence of target miRNA, and constructing a biotin-rich DNA complex on the surface of the magnetic beads; performing enzyme labeling by using an alkaline phosphatase-streptavidin coupling compound, and catalyzing ascorbic acid phosphate to generate ascorbic acid potassium iodate, so that the color of the solution changes, and high-sensitivity detection of the target miRNA is realized. The multicolor visualization detection method can produce near-full-spectrum color changes by combining the gold nano double-cone local surface plasmon resonance property change, and is beneficial to improving the portability of the sensor and the accuracy of the visual analysis.

The invention discloses a preparation method of a heterojunction modified C60 supported monatomic iodine catalyst, and belongs to the technical field of nano materials and catalysis. According to the method, iodine atoms are stably loaded on a C60 carrier through oxidation pretreatment, heterostructure construction and a pyrolysis anchoring process. The method comprises the following steps: firstly, carrying out surface carboxylation activation on C60 by adopting nitric acid / sulfuric acid mixed acid; then mixing with thiourea, and performing high-temperature annealing to realize nitrogen-sulfur co-doping, so as to form a donor-acceptor pair heterojunction in a C60 skeleton; and finally, ball-milling and mixing with ammonium iodide or potassium iodate, and pyrolyzing in an inert atmosphere, so that iodine atoms and defect sites of the carrier form a C-I-N or C-I-S coordination structure, and monatomic-scale dispersion is realized. Topological defect anchoring points are created in C60 through heterojunction engineering, so that the iodine loading capacity reaches 5.0 wt% or above, the cycling stability is remarkably improved, the electron structure is optimized through nitrogen and sulfur synergistic doping, the half-wave potential of the catalyst in the oxygen reduction reaction reaches 0.85 V or above, and the apparent rate constant of persulfate for activating and degrading pollutants reaches 0.45 min <-1 >. The method has the advantages of simple process and low raw material cost, and is suitable for preparing efficient non-metal catalysts in the fields of fuel cells, metal-air battery electrodes, advanced oxidation water treatment and the like.

The invention discloses a method for reducing the stimulated Raman scattering effect of liquid water and application of the method, and belongs to the technical field of water-guided laser processing. The method specifically comprises the following steps: adding potassium iodate into liquid water to obtain a potassium iodate aqueous solution; according to the invention, potassium iodate (KIO3) is added into liquid water, so that the stimulated Raman scattering effect of 532 nm green laser propagating in water can be greatly reduced, and the effect is better than that of pure water, KCl, NaCl and other substances. When the concentration of potassium iodate is 0.28 mol / L, the effect is optimal, and the stimulated Raman scattering energy can be reduced to about 30% of that of pure water. The solution is applied to a coupling water cavity of a water-guided laser instead of pure water, and stimulated Raman scattering of water can be reduced, so that the energy transmission efficiency is improved, the light beam quality is improved, the system stability is enhanced, the design difficulty is reduced, the processing efficiency and precision are guaranteed, and the solution has an important application prospect in the field of high-energy water-guided laser processing.

The application discloses a method for detecting the acidity of a circulating solution of electro-deposited cobalt, which comprises the following steps: removing oxidizing substances in the circulating solution of electro-deposited cobalt by potassium iodide in an acidic medium; reacting the potassium iodide with potassium iodate and acid to generate iodine molecules; titrating with a sodium thiosulfate standard solution until the solution changes from blue or blue-black to the original color of the solution, which is the end point; and calculating the acidity content according to the mass balance. The method can effectively remove the oxidizing substances in the solution to be measured, avoid the interference with the determination of the acidity content, and make the detection result more accurate. The sodium thiosulfate is innovatively applied to the detection of the acidity of the circulating solution of electro-deposited cobalt, and the sodium thiosulfate titration is used to replace the commonly used sodium hydroxide titration method, so that the interference of the original color of the light red solution with the color judgment of the end point of the sodium hydroxide (phenolphthalein as an indicator) is avoided.

The present application belongs to the field of gas detection, and relates to a combined detection tube for detecting carbon monoxide concentration in blood. The device of the present application is composed of a sample adding tube and a detection tube. The filler section arranged in the sample adding tube can effectively destroy red blood cells to release CO gas under the action of Cr(VI) / Cr(III) redox system, and at the same time, the reducing substances such as glutathione (GSH) and ascorbic acid in blood are removed through the interference removal section, thereby significantly improving the specificity and accuracy of detection. The indicating glue section in the detection tube adopts a platinum-selenium compound and a potassium iodate system, which occurs a color reaction in the presence of CO: I2O5+5CO→I2+5CO2, and the generated iodine element presents a brown color development band, the length of which is positively correlated with the concentration of HbCO, so as to realize the visual quantitative analysis of the content of carboxyhemoglobin in blood.

The invention belongs to the technical field of biomedicine, and particularly relates to a piezoelectric nanosheet for regulating and controlling distribution and expression of cell membrane protein and a preparation method of the piezoelectric nanosheet. The piezoelectric nanosheet is a bismuth oxyiodate layered nanosheet with an Aurivillius structure, and the surface of the piezoelectric nanosheet is modified by polyvinylpyrrolidone (PVP) and is abbreviated as BIOP; the nanosheet is synthesized by bismuth nitrate pentahydrate, potassium iodate and PVP through a hydrothermal method in one step, and the average size is 93 nm. BIOP can be attached to the surface of a cell, responds to ultrasonic irradiation with different intensities, generates a nanoscale periodic oscillation electric field, and performs electrostatic interaction with charged cell membrane protein on a cell membrane, so that the original hydrophobic force-electrostatic force balance steady state of the membrane protein is broken, internalization and degradation of the membrane protein are efficiently mediated, and regulation and control of distribution and expression of the cell membrane protein are realized. Compared with biochemical strategies such as antagonist drugs, gene editing and the like, the strategy has the unique advantages of being accurate and controllable, high in penetration depth and the like, and has important significance for revealing an intercellular communication mechanism and treating cell membrane protein dependent diseases.

A chemical mechanical planarization composition for polishing molybdenum, comprising an aqueous liquid carrier, abrasive particles dispersed in the liquid carrier, an amine compound having an acid group selected from the group consisting of carboxylic acid, phosphoric acid, and sulfonic acid, and an oxidizing agent selected from the group consisting of hydrogen peroxide, ferric nitrate, potassium iodate, and mixtures thereof. A method for chemical mechanical polishing a substrate containing a molybdenum layer includes contacting the substrate with the polishing composition, moving the polishing composition relative to the substrate, and polishing the substrate to remove a portion of the molybdenum layer from the substrate.

This invention discloses an industrial production method for low-color 1,3-diiodo-5,5-dimethylhydantoin. It innovatively employs an integrated reaction system of "dual-catalyst synergy + microwave assistance + chlorine-oxygen composite oxidation." The synergistic effect of the dual catalysts reduces the activation energy of the iodination reaction and improves reaction selectivity. Furthermore, the non-thermal effect of microwaves accelerates the collision efficiency of reactant molecules. Simultaneously, oxygen partially replaces chlorine, reducing the formation of chlorinated impurities and shortening the reaction cycle. A post-processing technique of "gradient pH control + potassium iodate-ethanol composite rinsing + vacuum freeze-drying" is constructed. First, gradient pH adjustment promotes the crystallization of the target product. Then, the high solubility of ethanol for organic coloring impurities and the oxidation effect of potassium iodate on low-valent iodine impurities in the composite rinsing solution efficiently remove residual impurities. Combined with low-temperature freeze-drying, the product's color is prevented from changing color due to heat. Ultimately, the color of the product is stably controlled, extending its shelf life and meeting the stringent requirements of high-end medical and precision electronics fields for ultra-low color products.

The application discloses a method for measuring tin content in polymetallic ore by alkali-salt acid-hydrofluoric acid acidification complexing, and belongs to the technical field of ore analysis and testing. The method is aimed at the problems of interference in tin determination and low recovery rate caused by high phosphorus, high aluminum, high silicon and complex matrix containing niobium and tantalum in the existing sulfuric acid system. The method adopts sodium peroxide to melt and decompose the sample, adds hydrochloric acid-hydrofluoric acid mixed acid for acidification complexing after hot water extraction, converts silicon, aluminum, niobium and tantalum into soluble fluorine complex, effectively inhibits the formation of colloids and the adsorption loss of tin, and then combines with inductively coupled plasma emission spectrometry to determine the characteristic spectrum of tin. The method has a standard addition recovery rate of 101-105%, and the comparison result is accurate and reliable compared with the potassium iodate titration method. The method is simple, efficient, effectively eliminates the interference of complex matrix, and is suitable for accurate determination of tin in high-phosphorus, high-aluminum and complex ore samples containing niobium and tantalum such as lithiophilite.

The invention discloses a device and a method for detecting the content of As (III) in a water body based on a paper-based micro-fluidic chip. The method is based on the chemical principle that arsenite reacts with potassium iodate under the acidic condition to generate an iodine simple substance, and rhodamine B is oxidized by the generated iodine simple substance under the catalytic action of a sulfuric acid medium and potassium bromide, so that the rhodamine B is subjected to a color fading reaction. According to the device, a fluid channel is prepared on a filter paper material, reagent dropwise adding areas and a reaction area are sequentially arranged, corresponding reagents are dropwise added into the reagent dropwise adding areas in sequence, then the reagents are converged to a main channel step by step through a micro-fluidic channel and are communicated to the reaction area, and the reagents are mixed in the micro-fluidic channel and subjected to a chromogenic reaction in the reaction area. The method comprises the following steps: shooting an image of a reaction area, extracting color parameters by using image processing software, and performing contrast calculation with a pre-established standard working curve to obtain the content of As (III) in the water sample. The technical problems that in the prior art, operation steps are complex, the detection period is too long, the detection portability of the arsenic content in the water body is poor, and the detection cost is too high are solved.

The invention relates to a preparation method of selenium-rich edible salt, and belongs to the technical field of edible salt. The preparation method comprises the following steps: (1) coating an iodine-containing substance with a coating material to prepare iodine-containing coated particles; (2) coating a selenium-containing substance with a coating material to prepare selenium-rich coated particles; and (3) uniformly mixing and stirring the iodine-containing coated particles, the selenium-rich coated particles, edible salt and / or other acceptable food seasoning components to obtain the selenium-rich edible salt. According to the invention, water-soluble dietary fiber (oat bran extract) and food-grade collagen peptide are mixed as a coating material; insoluble dietary fibers (oat bran leaching powder) and porous deproteinized dictyophora indusiata powder are mixed to serve as an adsorption carrier, a selenium-rich nutrient solution and a potassium iodate solution are adsorbed and dried through the adsorption carrier and then coated with a coating material, and the two coated particles are mixed with salt in proportion, so that oxidation of selenium-containing components and direct contact of selenium and iodine are avoided, and the selenium-rich nutrient solution is prepared. And the stability of the product is maintained.

The application discloses a pueraria powder-based iodine compound and a preparation method and application thereof, and comprises the following steps: mixing pueraria powder with water to form a pueraria powder water suspension; performing hydrothermal gelatinization and respiration treatment on the pueraria powder water suspension to obtain a gelatinized and respiration pueraria powder suspension; adding potassium iodide, potassium iodate and acid into the gelatinized and respiration pueraria powder suspension, adjusting the pH value of the system to be acidic, performing reaction, and obtaining the pueraria powder-based iodine compound through post-treatment. The application constructs a loading framework through gelatinization and respiration of pueraria powder, realizes stable loading of iodine by relying on in-situ reaction, and realizes the multiple effects of low stimulation, efficient inhibition of digestive tract pathogenic bacteria and precise regulation of intestinal microecology by synergistic effect of the strong bactericidal capacity of iodine which is not prone to drug resistance and the inherent intestinal flora regulation activity of pueraria powder, so that the pain points of instability and strong irritation of traditional iodine preparations are solved, and a new way for treating digestive tract infectious diseases is opened up.

This invention relates to a compound potassium fluoroiodate and a linear birefringent optical crystal of potassium fluoroiodate, as well as their preparation methods and uses. The chemical formula of the compound is KI4O. 10 F, with a molecular weight of 725.70, was prepared by hydrothermal or room temperature solution methods. This compound belongs to the triclinic crystal system, space group P1(_), with cell parameters a=7.1685(3) Å, b=7.4967(3) Å, and c=10.9225(4) Å. α =102.823(1)°, β =90.704(1)°, gamma =114.431(1)°, Z =2, V=517.50(4)Å 3 The crystal is grown using a hydrothermal method or a room-temperature solution method. It has a low ultraviolet cutoff edge and a large birefringence of 0.133@1064nm. Its excellent performance and good chemical stability make it suitable for fabricating polarizing prisms, phase delay devices, and electro-optic modulation devices for various applications, such as Glan prisms, polarization beam splitters, compensators, optical isolators, circulators, and optical modulators. It plays an important role in the fields of optics and communications.

This invention discloses a novel functional fertilizer production technology that utilizes iodine-containing water-soluble fertilizer with nutritional and disease-preventing properties and its preparation method. The fertilizer is scientifically formulated from macronutrients (potassium nitrate, ammonium dihydrogen phosphate, urea), a complex iodine source (potassium iodate, amino acid chelated iodine, seaweed iodine extract), biostimulant and stabilizing components (potassium humate, sugar alcohol mixture, vitamin C), and micronutrients. Its preparation method employs a unique "two-step chelation / complexation stabilization process," first constructing a stable iodine-containing mother liquor, then integrating it with macronutrients to ensure high stability and activity of iodine in the fertilizer system. This invention effectively solves the problems of low utilization rate and poor stability of iodine supplementation in agriculture. While providing balanced nutrition, it significantly promotes crop growth and improves its stress resistance, enabling efficient biofortification of iodine in agricultural products. The process is simple and suitable for modern integrated water and fertilizer management, and is of great significance for producing functional iodine-rich agricultural products and improving the public's iodine nutrition status.

The invention discloses a method for detecting the arsenic content in a water body by using a microfluidic-ultraviolet visible spectrum, and particularly relates to a detection technology for the arsenic content in the water body. According to the method, the principle that arsenite and potassium iodate generate elemental iodine under the acidic condition, and the elemental iodine can oxidize rhodamine B (RhB) in a sulfuric acid medium under the catalysis of a potassium bromide solution so as to fade the rhodamine B is utilized, a microfluidic device and an ultraviolet-visible spectrophotometric technology are combined, spectrum detection is carried out on the faded rhodamine B generated by reaction, and the detection result is accurate. And comparing with a standard curve to obtain the arsenic concentration. The detection range of the method is 0.1-20 [mu] g / L, the method covers the concentration limit value (10 [mu] g / L) of the arsenic ions in the drinking water by the World Health Organization, and the detection limit is 0.096 [mu] g / L and is lower than that of most other methods.