27 results about "Potassium iodate" patented technology

The invention relates to the technical field of iodide content detection, in particular to a method for determining radiochemical purity and iodine content of sodium iodide capsules for diagnosis by HPLC (High Performance Liquid Chromatography), which comprises the following steps: setting chromatographic conditions, and connecting a radioactive flow detector and an ultraviolet detector in series; preparing a disodium hydrogen phosphate solution, a glucose solution, a vitamin C solution, a first control solution, a potassium iodate solution, a second control solution, a carrier solution, a first sample solution, a second sample solution, a negative control solution and a test solution; and determining the radiochemical purity and iodide content of the first sample solution and the second sample solution in three batches based on the chromatographic conditions and the determination standard. According to the method, test parameters such as capsule sample analysis time, a pretreatment mode and a sample size are optimized, the radiochemical purity of the capsule is accurately determined, and the iodide content is controlled, so that the problem that main components cannot be accurately quantified and potential radioactive impurities cannot be detected by a traditional diagnosis sodium iodide [131I] capsule determination method is solved.

The invention provides a multicolor visual semi-quantitative detection method for miRNA in skin interstitial fluid, which comprises the following steps: extracting a skin interstitial fluid sample in a minimally invasive manner by combining a microneedle patch with a vacuum negative pressure technology; the method comprises the following steps: incubating a skin interstitial fluid sample and a magnetic nanoprobe of which the surface is immobilized with a hairpin probe H1, opening H1 in the presence of target miRNA, triggering a subsequent hybridization chain reaction of a hairpin probe H2 and H3, and constructing a biotin-rich DNA compound on the surface of a magnetic bead; the method comprises the following steps: carrying out enzyme labeling by using an alkaline phosphatase-streptavidin conjugate, catalyzing ascorbic acid phosphate to generate ascorbic acid to reduce potassium iodate, and generating an iodine elementary substance to etch a gold nano bipyramid, so that the color of a solution is changed, and high-sensitivity detection on target miRNA is realized. The multi-color visual detection method provided by the invention is combined with the gold nano bipyramid localized surface plasmon resonance property change, so that near-full spectrum color change can be generated, and the portability of the sensor and the accuracy of visual analysis can be improved.

The invention relates to the technical field of metal superfine powder preparation, in particular to a manufacturing process of nanoscale zirconium powder for electric vacuum, high-purity sponge zirconium is used as a raw material, and after being crushed by zirconium oxide equipment, the high-purity sponge zirconium is subjected to wet ball milling, freeze drying, low-temperature vacuum deoxidation and two-step passivation in an inert atmosphere. During wet ball milling, a potassium iodate-polyvinylpyrrolidone coating aid is added, so that iodate radicals are slowly released and generate a compact zirconium dioxide passivation film with zirconium powder, iodide ions are adsorbed, oxidation and agglomeration are inhibited, and steric hindrance of polyvinylpyrrolidone further stabilizes the particle size; the iodine element is sublimated and removed through low-temperature vacuum deoxidation treatment, polyvinylpyrrolidone is completely decomposed, the oxygen content of the zirconium powder is controlled to be 0.10-0.15 wt%, the particle size of a final product is 30-40 nm, the span is smaller than or equal to 2.0, and the oxygen content is smaller than or equal to 0.15%, and the zirconium powder manufactured through the method is narrow in particle size distribution, low in key impurity content and high in purity and is suitable for electric vacuum devices.

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 present application relates to a kind of processes for thickening nickel plating of high phosphorus without burr, specifically comprising metal substrate pretreatment, plating solution preparation, plating solution post-treatment and electroless nickel plating steps. The plating solution composed of sodium phosphate dibasic, nickel sulfate, sodium hypophosphite, sodium fluoride, sodium citrate, propionic acid, bismuth nitrate, chelidamic acid, copper sulfate and sodium dodecyl sulfate is used for electroless nickel plating after compounding with composite stabilizer C. Composite stabilizer C is compounded by stabilizer A and stabilizer B according to a volume ratio of 2:1, wherein stabilizer A is composed of sodium thiosulfate and potassium iodate, and stabilizer B is composed of sodium dodecyl sulfate and ammonium molybdate. The present application overcomes the generation of burr while ensuring the thickening of the coating, and the coating is uniform, low cost, environmentally friendly and durable. The utilization rate of nickel in the plating solution is high, and the service life of the plated part is long.

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 relates to the field of coating technology, specifically a method for preparing an anti-icing coating for power transmission lines. The method comprises the following raw materials in parts by weight: propylene glycol dimethacrylate, butyl acetate, polyamide resin, coupling agent, nano-silica, nano-titanium dioxide, graphene oxide, potassium iodate, graphite powder, and soapberry oil. The steps are as follows: S1. Mixing graphite powder and soapberry oil to obtain a first mixture; S2. Mixing graphene oxide and potassium iodate to obtain a second mixture; S3. Mixing the first mixture, the second mixture, propylene glycol dimethacrylate, and butyl acetate to obtain a third mixture; S4. Heating nano-silica and nano-titanium dioxide to 50-60°C, then adding them to the third mixture and stirring to obtain the anti-icing coating. This method for preparing the anti-icing coating yields a coating with better anti-icing performance. This invention also provides a method for applying the anti-icing coating.

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.

This invention belongs to the technical field of organic synthesis and discloses a method for preparing benzo[i]iodo[i]oxapentane reagent. The method involves adding periodic acid or periodate as an oxidant, along with an o-iodobenzyl alcohol compound, to an aqueous acetic acid solution. Heating causes a redox reaction, followed by recrystallization or slurrying to obtain the product, benzo[i]iodo[i]oxapentane reagent. R1 is selected from methyl or trifluoromethyl; R2 is selected from hydrogen, halogen, or methyl; R3 is selected from hydrogen or methyl; and periodate is selected from sodium periodate, potassium periodate, tetrabutylammonium potassium periodate, or lithium periodate. This invention provides a one-step, efficient method for preparing benzo[i]iodo[i]oxapentane reagent using periodic acid / salt, with simple steps and easily separable reaction products. The redox reaction equation is as follows:

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 production system and method of calcium iodate, and belongs to the technical field of chemical synthesis and separation. The production system of the calcium iodate comprises a reaction kettle, a stirrer, a neutralization tank, a synthesis tank, a filter, a dryer and a crusher. The production method of the calcium iodate comprises the following steps: 1, producing potassium hydrogen iodate from potassium chlorate and iodine, 2, neutralizing the potassium hydrogen iodate with potassium hydroxide to produce potassium iodate, 3, reacting the potassium iodate with calcium chloride to produce a calcium iodate suspension, and finally, filtering and drying to obtain potassium iodate monohydrate. According to the method, a chlorine oxidation method, a hydrogen peroxide oxidation method and an electrochemical oxidation method are not needed, the second step and the third step can be carried out under normal pressure without heating except for heating for producing the potassium hydrogen iodate, and special equipment is not needed. No three wastes are discharged in the whole production process, and meanwhile, a byproduct potassium chloride can be produced.

The invention discloses a preparation method of an iodine and nitrogen co-doped TiO photocatalyst for degrading mycotoxin DON, and relates to a preparation method of a TiO photocatalyst. In order to solve the problems of higher cost, lower degradation speed and longer fermentation period of a biological method, the method comprises the following steps: dissolving tetrabutyl titanate and acetic acid in absolute ethyl alcohol to prepare a solution A, dissolving urea in water to form a solution B, dissolving potassium iodate in water to form a solution C, mixing the solution B, the solution C and the solution A, and stirring to obtain a mixed solution; meanwhile, stirring until the solution becomes sol and gel, standing the gel, drying, grinding and calcining to obtain the photocatalyst. According to the preparation method, TiO2 is co-doped with an element I and N, and the photocatalytic activity of I doping is improved by changing a lattice structure, introducing oxygen vacancies and the like; n doping can form a new energy level by replacing oxygen atoms in TiO2 crystal lattices or occupying the interstitial positions of the crystal lattices, so that the band gap is reduced. The invention belongs to the field of photocatalyst preparation.

The invention relates to the technical field of potassium iodate recovery, and discloses a potassium iodate waste liquid recovery treatment method, which comprises: collecting a potassium iodate production waste liquid, and clarifying the potassium iodate production waste liquid to obtain a clarified filtrate; stirring the obtained clarified filtrate and a pre-prepared soluble calcium salt solution for reaction to obtain calcium iodate precipitation slurry; carrying out solid-liquid separation on the obtained calcium iodate precipitation slurry to obtain a calcium iodate filter cake; stirring and reacting the obtained calcium iodate filter cake with a pre-prepared potassium carbonate solution and water to obtain a reaction mixed solution; carrying out solid-liquid separation on the obtained reaction mixed solution to obtain a potassium iodate solution; and carrying out crystallization treatment on the obtained potassium iodate solution to obtain potassium iodate. The method provided by the invention improves the recovery rate of iodine, avoids the use of toxic barium salt, reduces the generation of solid wastes, and realizes the resource utilization of waste liquid.

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 application discloses a preparation method of a mixed color structural color fabric, and comprises the following steps: completely dissolving caffeic acid in deionized water, then adding a potassium iodate solution, stirring and reacting, and obtaining poly-caffeic acid nanometer microspheres after centrifugation and water washing; repeating the above steps, and changing the conditions of the caffeic acid and the potassium iodate to obtain poly-caffeic acid nanometer microspheres with different particle sizes; dispersing the poly-caffeic acid nanometer microspheres with different particle sizes in water respectively to obtain microsphere dispersions with different particle sizes; uniformly mixing the microsphere dispersions with different particle sizes to obtain a mixed dispersion, then adding an aqueous polyurethane to obtain a microsphere assembly liquid; and immersing a fabric in the microsphere assembly liquid to obtain a mixed color structural color fabric after self-assembly. According to the preparation method, the poly-caffeic acid nanometer microspheres with different particle sizes are mixed and deposited, and various structural color fabrics can be quickly prepared.

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.

The invention discloses a kudzuvine root powder-based iodine complex and a preparation method and application thereof, and the preparation method comprises the following steps: mixing kudzuvine root powder with water to form a kudzuvine root powder water suspension; carrying out hydrothermal gelatinization-retrogradation treatment on the kudzuvine root powder water suspension to obtain a gelatinized-retrogradation kudzuvine root powder suspension; and adding potassium iodide, potassium iodate and acid into the gelatinized-retrogradation radix puerariae powder suspension, adjusting the pH value of the system to be acidic, carrying out a reaction, and carrying out post-treatment to obtain the radix puerariae powder-based iodine compound. According to the invention, a loading framework is constructed through gelatinization-retrogradation of the radix puerariae powder, stable loading of iodine is realized by virtue of an in-situ reaction, and multiple effects of low stimulation, efficient inhibition of pathogenic bacteria in digestive tracts and precise regulation of intestinal microecology are realized by virtue of synergistic effects of strong bactericidal ability of iodine and difficult generation of drug resistance and inherent intestinal flora regulation activity of the radix puerariae powder; the problems that a traditional iodine preparation is unstable and large in irritation are solved, and a new way is developed for treating infectious diseases of the digestive tract.

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.

The invention relates to a vitamin mixed feed for vegetarian birds, which is prepared from the following components in parts by weight: 25-34 parts of compound amino acid, 33-47.5 parts of compound vitamin, 7.5-15.67 parts of compound trace element, 5-20 parts of flavoring agent capable of simulating fruit taste and 5-13 parts of glucose. Wherein the compound amino acid comprises sulfur-containing amino acid capable of promoting normal development of a reproductive system of birds; the compound vitamins comprise vitamin A acetate, vitamin B1, vitamin B2, vitamin B6, vitamin B12 and vitamin D3; the compound trace elements comprise copper glycinate, manganese protein, potassium iodate and selenium yeast. The vegetarian bird feed has the advantages that the vegetarian bird feed can meet the requirements of balanced intake of amino acids, vitamins and trace elements of vegetarian birds, and promotes metabolism and physical development of the vegetarian birds, thereby reducing the atherosclerosis risk of the vegetarian birds.