150 results about "Iodide potassium" patented technology

The invention discloses a crown ether functionalized covalent organic framework material as well as a preparation method and application thereof, and the method comprises the following steps: adding a covalent organic framework material, 4-bromobenzo-15-crown-5, potassium carbonate and potassium iodide into an acetone solution for reaction, washing the obtained crude product, performing Soxhlet extraction with tetrahydrofuran for a certain time, and drying to obtain the crown ether functionalized covalent organic framework material. The crown ether functionalized covalent organic framework material is obtained. Compared with a synthesis method of crown ether functionalized COFs in the prior art, the method has the advantages that the crown ether (4-bromobenzo-15-crown-5) can be grafted to the COFs in one step, the Na < + > adsorption capacity and the adsorbent recycling performance are greatly improved, the synthesis method is simple, and synthesis of the crown ether functionalized COFs is greener, more convenient and more economical.

The invention relates to the technical field of Abell stability test equipment, and discloses an automatic device suitable for an Abell stability test. The test tube rack assembly, the first clamping mechanism, the second clamping mechanism, the pipetting mechanism and the constant-temperature heating mechanism are installed on the workbench, the test tube rack assembly is used for containing test tubes, the first clamping mechanism is used for clamping the test tubes in a releasable mode and moving the test tubes into the constant-temperature heating mechanism, and the second clamping mechanism is used for clamping a test tube rack in a releasable mode and moving the test tubes into the constant-temperature heating mechanism. The lower end of the test paper rack is used for connecting potassium iodide starch test paper, and the pipetting mechanism is used for sucking nitroglycerin and a glycerin aqueous solution and respectively filling the nitroglycerin and the glycerin aqueous solution into the test tube and the potassium iodide starch test paper; the monitoring mechanism is used for monitoring color change of the potassium iodide starch test paper; and a control unit. According to the invention, the automatic test process of the Abell stability test can be realized.

The invention relates to a multi-element compound corrosion inhibitor for offshore CO2 oil displacement as well as a preparation method and application of the multi-element compound corrosion inhibitor. The invention relates to a multi-element compound corrosion inhibitor for offshore CO2 oil displacement, which is characterized by comprising 8 to 10 weight percent of oleic acid imidazoline quaternary ammonium salt, 8 to 10 weight percent of oleic acid imidazoline lauric acid amide, 4 to 6 weight percent of potassium iodide, 4 to 6 weight percent of octylphenol polyoxyethylene ether, 4 to 6 weight percent of dodecyl dimethyl tertiary amine, 4 to 6 weight percent of assistant A, 4 to 6 weight percent of assistant B and the balance of absolute ethyl alcohol. According to the multi-element compound corrosion inhibitor for offshore CO2 oil displacement as well as the preparation method and the application of the multi-element compound corrosion inhibitor, the multi-element compound corrosion inhibitor contains a plurality of components and can effectively inhibit CO2 corrosion at a high temperature.

The invention relates to the technical field of potassium iodide preparation, in particular to a cyclic preparation method which comprises the following steps: in an oxidation-reduction reaction system containing elemental iodine, potassium hydroxide and potassium formate, carrying out an oxidation-reduction reaction at a first temperature to obtain an oxidation-reduction reaction solution; adding a precipitant, carrying out precipitation reaction at a second temperature, and carrying out solid-liquid separation on the obtained reaction liquid to obtain a potassium iodide solution; carrying out evaporation concentration, cooling crystallization and solid-liquid separation on the potassium iodide solution to respectively obtain potassium iodide crystals and potassium iodide mother liquor, and adding the potassium iodide mother liquor into a redox reaction system; according to the mode, the potassium iodide is formed by adopting an oxidation reduction mode, the potassium iodide can be obtained by carrying out one-time reaction in one reaction system, then impurities are removed by utilizing the precipitant, only solid impurities and a solvent evaporated in the evaporation and concentration step leave the reaction system in the whole reaction process, and the cyclic utilization of raw materials is realized; the utilization rate of raw materials is improved.

Iodized micellar casein is produced by adding, to an aqueous solution of micellar casein, crystalline potassium iodide at a ratio of 1:7-1:9; holding the mixture for 5-10 minutes; adding to the mixture crystalline potassium persulphate at a ratio of 1:8-1:12 crystalline potassium persulphate to micellar casein mass; holding the mixture for 4-8 hours at a temperature of 18-25°С and a pH of 6.5-8.9 while constantly monitoring the molecular iodine content of the solution and periodically adding portions of crystalline potassium persulphate at a ratio of 1:12-1:24 crystalline potassium persulphate to micellar casein mass to continue the iodination reaction; removing residual inorganic salts from the resulting aqueous solution by microfiltration and diafiltration, followed by sterilizing microfiltration and freeze drying or spray drying. The method makes it possible to produce iodized micellar casein that is suitable for creating products for preventing iodine deficiency and optimizing iodine metabolism and for preventing and protecting against radiation poisoning.

The invention relates to a synthesis method of low-cost environment-friendly dioscorea element I. The synthesis method comprises the following steps: by taking 3, 5-dimethoxybenzyl alcohol as a raw material, brominating, reacting with triethyl phosphite and 4-benzyloxy-3-methoxybenzaldehyde to generate 3, 4 ', 5-trimethoxy-3'-benzyloxy stilbene, carrying out ultraviolet cyclization reaction, reacting with palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon, palladium-carbon and debenzylating with hydrogen to obtain the Chinese yam element I. The potassium iodide is used as the catalyst in the ultraviolet lamp irradiation catalytic ring closing reaction, the pure water is used as the detergent, compared with the method adopting iodine as the catalyst and adopting a sodium thiosulfate aqueous solution as the detergent, the product yield of the compound 33-4 is 75%, the yield of the compound 33-5 is 16.6%, the purity is 98.7%, and the method has the advantages of low cost, high yield, few impurities and the like.

The invention discloses a proton exchange membrane hydrogen production electrolysis catalyst and a preparation method thereof.The preparation method comprises the following steps that S1, iridium precursor salt and ruthenium precursor salt are dissolved in water, and a solution A is obtained; s2, a triblock copolymer P123 is dissolved in ethyl alcohol, and a solution B is obtained; s3, dissolving potassium iodide in water to obtain a solution C; s4, uniformly mixing the solution A, the solution B and the solution C, transferring into a reaction kettle, and heating for reaction; and S5, collecting the product obtained in the step S4, and centrifuging and washing to obtain the iridium ruthenium alloy catalyst. According to the invention, a solvothermal reduction method is adopted, a triblock copolymer P123 is taken as a reducing agent and a protective agent, ethanol is taken as a solvent, and potassium iodide is added to improve the size and crystallization degree of the catalyst, so that the iridium-ruthenium alloy catalyst with high catalytic activity and high stability is obtained.

The present disclosure discloses a thermochromic copper iodide organic hybrid luminescent material and a preparation method thereof. The chemical formula of the thermochromic copper iodide organic hybrid luminescent material is Cu4I6C 18 H 30 N4; The preparation method includes the following steps: preparing 4-dimethylamino-1-ethylpyridinium iodide; reacting a methanol solution containing 4-dimethylamino-1-ethylpyridinium iodide with a potassium iodide solution containing cuprous iodide to obtain solid M; centrifuging, washing, and drying solid M to obtain the thermochromic copper iodide organic hybrid luminescent material. Single crystals of the thermochromic copper iodide organic hybrid luminescent material are prepared by the slow diffusion method. The thermochromic copper iodide organic hybrid luminescent material of the present disclosure has the characteristics of high fluorescence quantum yield, high stability, and thermochromism.

The present application provides a kind of hair care composition containing potassium iodide and its preparation method, the hair care composition includes A agent and B agent;The A agent includes 5,6-dihydroxyindole, potassium iodide, arginine, propylene glycol, sodium sulfite, ascorbic acid, xanthan gum and water;The B agent includes sodium laureth sulfate, potassium peroxodisulfate, cocamidopropyl betaine, disodium lauroyl glutamate, decyl glucoside, cocamide MEA, guar hydroxypropyltrimonium chloride, sodium chloride, citric acid, disodium EDTA, essence and water.The present application improves the stability of 5,6-dihydroxyindole by using potassium iodide mixed with 5,6-dihydroxyindole, improves the problem that dyeing effect is not obvious, uneven, dyeing is not persistent, and there is no risk of damage to hair and scalp by strong alkaline substances, avoids using benzidine substances with high carcinogenic and sensitizing risk, and the hair dyeing effect is more persistent, more mild, and safer.

Aspects of the present disclosure are directed towards a method for producing an activated carbon / bismuth oxy-iodide nanocomposite. The method includes heating a glycol solution including Bi(NO3)3·5H2O and activated carbon to 100° C. The method includes heating a glycol solution includes potassium iodide to 100° C. The method includes adding the glycol solution including Bi(NO3)3·5H2O and activated carbon and the glycol solution including potassium iodide to a reaction vessel including a solvent to form a reaction mixture. The method includes chilling the reaction mixture to ambient temperature. The method includes filtering the reaction mixture to obtain the activated carbon / bismuth oxy-iodide nanocomposite.

Aspects of the present disclosure are directed towards a method for producing an activated carbon / bismuth oxy-iodide nanocomposite. The method includes heating a glycol solution including Bi(NO3)3·5H2O and activated carbon to 100° C. The method includes heating a glycol solution includes potassium iodide to 100° C. The method includes adding the glycol solution including Bi(NO3)3·5H2O and activated carbon and the glycol solution including potassium iodide to a reaction vessel including a solvent to form a reaction mixture. The method includes chilling the reaction mixture to ambient temperature. The method includes filtering the reaction mixture to obtain the activated carbon / bismuth oxy-iodide nanocomposite.

The invention discloses a preparation method of a difluoromethyl reagent and application of the difluoromethyl reagent in synthesis of a nickel-catalyzed alkyl difluoromethyl compound. The preparation method of the difluoromethyl reagent comprises the following steps: in an inert gas atmosphere, adding potassium iodide, cuprous iodide and a water-containing dimethylformamide solution into a reaction container, heating, dropwise adding difluorochloroacetic acid of DMF (Dimethyl Formamide) into a reaction system, collecting difluoroiodomethane, and supplementing a 1-methyl-2-pyrrolidone NMP (N-Methyl Pyrrolidone) solution into the system. The invention provides a difluoromethyl reagent which is simple and convenient to operate, low in cost, high in yield, environment-friendly and beneficial to large-scale preparation and application of the reagent in synthesis of difluoromethyl substituted alkane compounds.

The invention relates to a preparation method of a nano silver halide emulsion, which comprises the following steps: S1, fully dissolving deionized water, sodium bromide, a nucleating aid, a stabilizer and gelatin in a container with disc type stirring, and uniformly mixing to prepare a primary glue solution; uniformly mixing silver nitrate with deionized water to prepare a silver nitrate solution; uniformly mixing sodium bromide, potassium iodide and deionized water to prepare a halogen solution; s2, at a certain temperature, injecting a prepared silver nitrate solution and a halogen solution into the primary glue solution at the same time to obtain a mother solution containing nano silver halide; and S3, desalting the mother liquor containing the nano silver halide, supplementing glue, and sensitizing to obtain the nano silver halide emulsion. The nucleating aid and the stabilizer are added into the gelatin aqueous solution, the prepared nano silver halide particles are uniform, stable in storage and free of aggregation, and the emulsion can be desalted at normal temperature, is low in energy consumption and high in production efficiency, and is beneficial to continuous production.

The invention provides a quantum dot doped reduced graphene oxide film and a preparation method thereof, and belongs to the technical field of composite materials. The preparation method comprises the following steps: heating citric acid, phytic acid and 3-aminophenylboronic acid to react to prepare P / B / N co-doped graphene quantum dots, loading a lanthanum element, modifying the surface by a silane coupling agent with an epoxy group, reacting with an aniline tetramer to prepare a compound, adding the compound into a graphene oxide aqueous dispersion, carrying out suction filtration, soaking in a potassium iodide-hydrochloric acid solution, heating, carrying out a sealed reaction, and washing to obtain the lanthanum-doped graphene quantum dots. And drying to obtain the quantum dot doped reduced graphene oxide film. The quantum dot-doped reduced graphene oxide film prepared by the method has relatively good hydrophilicity and conductivity, so that the degree of order of the film is improved, the wet-induced power generation performance is improved, the performance is not attenuated after long-time operation, the service life and the storage life are long, and the quantum dot-doped reduced graphene oxide film has a wide application prospect.

The invention discloses a method for preparing high-purity indium from refined indium, and belongs to the technical field of metallurgy. The refined indium is distilled for three times, low-boiling-point impurities Cd, Zn, As, Pb and Bi can be separated and purified, then glycerin, potassium iodide and iodine are used for heat treatment, the Cd impurity can be further separated from indium, then glycerin, ammonium chloride and zinc chloride are used for heat treatment, and the high-purity indium is obtained. According to the method, the Tl impurity can be separated from indium, finally, sodium hydroxide and sodium nitrate are used for heat treatment, Sn, Pb and Fe can be separated from indium, refined indium can be effectively purified through the method, the refined indium is prepared into high-purity indium, the purity of the high-purity indium is 6N, and the content of single impurity metal elements Sb, Sb, Pb and Bi can meet the 7N ultra-high-purity indium metal standard.

The invention relates to the technical field of potassium iodide preparation, in particular to a preparation method of potassium iodide, which comprises the following steps: firstly, adding a reduction solution into an iodine solution to carry out a first reaction to obtain a first reaction solution, then, carrying out solid-liquid separation on the first reaction solution to obtain a first reaction filtrate, and adding a potassium hydroxide solution into the first reaction filtrate to carry out a second reaction to obtain a second reaction solution; finally, carrying out solid-liquid separation on the second reaction liquid to obtain a potassium iodide solution; a mixed solution of potassium hydroxide and potassium formate is added into an iodine solution for a first reaction, and elemental iodine is reduced into iodide ions by using formate under an alkaline condition, so that the difficulty of generating elemental iodine by reaction of iodate ions and iodide ions is improved, the iodine leakage phenomenon is reduced, and the purity of potassium iodide is improved; meanwhile, the technological process is simple, and operation is convenient.

The invention discloses a fully continuous flow preparation method of 4, 5-diiodine-1H-imidazole, and belongs to the technical field of synthesis and preparation. The method comprises the following steps: S1, simultaneously conveying an imidazole-containing sodium hydroxide aqueous solution, an iodine-containing elementary substance and a potassium iodide aqueous solution into a micro-mixer and a continuous flow coil reactor, and carrying out a continuous synthesis reaction to obtain a 4, 5-diiodine-1H-imidazole reaction solution; and S2, dropwise adding an acetic acid solution into the 4, 5-diiodine-1H-imidazole reaction solution to neutralize, separating out a solid product, washing with ice water, filtering and drying to obtain a 4, 5-diiodine-1H-imidazole solid. The fully continuous flow reaction technology system provided by the invention has excellent mass transfer and heat transfer performance, greatly enhances mixing among material molecules, greatly shortens the reaction time, and improves the reaction efficiency. The reaction time is shortened to more than ten seconds from more than ten hours of the traditional intermittent kettle reaction; meanwhile, the side reaction is inhibited, and the product quality of the 4, 5-diiodine-1H-imidazole (I) is improved.

The invention relates to a bioluminescence detection technology and a kit. The invention particularly discloses a renilla luciferase reporter gene detection kit which comprises a buffer solution and a detection substrate, and the buffer solution comprises Tris, potassium iodide, sodium sulfite, TCEP, a reducing agent and a surfactant. The prepared renilla luciferase reporter gene detection reagent has the advantages of high luminous intensity, low background and long luminous duration. When the renilla luciferase detection reagent is used, extra operation such as removal of a culture medium is not needed, and the expression level of renilla luciferase in cells can be rapidly detected.

The invention discloses luminous ink for preparing a scintillation layer and a preparation method and application of the luminous ink. The preparation method comprises the steps that cuprous iodide is dissolved in a saturated potassium iodide aqueous solution, hypophosphorous acid is added, and a first mixed solution is obtained; adding the first mixed solution into a polyvinylpyrrolidone solution to obtain a second mixed solution; the preparation method comprises the following steps: dissolving phenyl trimethyl ammonium iodide in a mixed solution of ethanol and acetonitrile to obtain a phenyl trimethyl ammonium iodide solution; quickly mixing a phenyltrimethylammonium iodide solution with the second mixed solution, stirring for a period of time, centrifuging and washing to obtain nano-particles, and dispersing the nano-particles into a solvent; metal copper-based halide nanoparticles are prepared at room temperature by using a single-component solution method, and then the metal copper-based halide nanoparticles are dispersed into a solvent to obtain the luminous ink. And then the luminous ink is uniformly sprayed on a selected substrate, and the thickness and the area can be freely adjusted according to requirements, so that a high-resolution scintillation layer is prepared.

The invention relates to a wafer-level gold etchant which is characterized by being prepared from the following raw materials in percentage by weight: 8-12% of a sodium thiosulfate solution, 28-32% of a thiourea solution, 8-12% of a potassium ferricyanide solution and 48-52% of a potassium iodide solution. The wafer-level gold corrosive liquid disclosed by the invention has the advantages that the wafer-level gold corrosive liquid can be widely applied to a circuit which has a gold film layer thickness of more than 0.5 mu m and has a relatively high requirement on sidetrack control, so that the problems of overlarge sidetrack, line CD (Compact Disc) over-limit and even metal falling caused by corrosion of the original gold corrosive liquid are avoided. When the wafer-level gold etching liquid is used for etching, smaller sidetracking is achieved, a process window is wider, process compatibility is better, and process support is provided for high-speed and high-power photoelectric semiconductors and micro-system devices.

The utility model relates to a device for detecting the content of sodium persulfate in copper dissolving liquid and a water electroplating device, and the detection device comprises a detection container, a silver ion selection electrode, a controller and a copper ion concentration detection component, the first conveying part is used for conveying copper dissolving liquid, the second conveying part is used for conveying silver nitrate standard liquid, the third conveying part is used for conveying potassium iodide standard liquid, at least the silver ion selection electrode and the second conveying part are electrically connected with the controller, and the silver ion selection electrode is arranged in the detection container and used for detecting silver ions in the detection container. The silver ion selection electrode transmits a detection signal to the controller, and the controller is used for controlling starting and stopping of the second conveying part according to the received signal; the measuring method is simple and reliable, the content of the sodium persulfate in the copper dissolving liquid can be effectively detected, the concentration of the sodium persulfate in the copper dissolving tank in the water electroplating device can be monitored in real time, the sodium persulfate is supplemented into the copper dissolving tank in time, and the copper dissolving capacity of the copper dissolving liquid in the copper dissolving tank is guaranteed.

The present application relates to the technical field of corrosion inhibitor, and proposes a thiourea modified imidazoline corrosion inhibitor and a preparation method thereof, which comprises the following components by weight: 40-50 parts of thiourea modified imidazoline, 6-8 parts of isopropyl alcohol, 0.1-0.2 parts of potassium iodide, 10-15 parts of an additive, and 35-40 parts of a solvent; the additive is composed of 2-amino-5-iodobenzoic acid methyl ester and a surfactant. Through the above technical solution, the problem of low corrosion inhibition rate and fast corrosion speed of the thiourea modified imidazoline corrosion inhibitor in the prior art is solved.

The invention provides a heat exciton-based organic scintillator film and a preparation method and application thereof, and belongs to the field of radiation detection. The method comprises the following steps: in a nitrogen atmosphere, dissolving 4, 4 '-(benzo [c] [1, 2, 5] thiadiazole-4, 7-diyl) diphenylamine, potassium iodide and potassium iodate in a mixed solvent for iodination reaction to obtain 4, 4'-(benzo [c] [1, 2, 5] thiadiazole-4, 7-diyl) bis [N, N-bis (4-iodophenyl) aniline]; the preparation method comprises the following steps: mixing 4, 4 '-(benzo [c] [1, 2, 5] thiadiazole-4, 7-diyl) bis [N, N-bis (4-iodophenyl) aniline], polysulfone and an organic solvent to obtain a mixed solution; and dispensing the mixed solution on a substrate to obtain the heat exciton-based organic scintillator film. Through directional design and introduction of four heavy atom iodine, the absorption coefficient of the organic scintillator is improved, and the attenuation life is reduced. And thus, the X-ray imaging effect of the organic scintillator film is improved.

The invention belongs to the technical field of materials, and particularly relates to a preparation method of a C-coated BiOI composite electrode material and application of the C-coated BiOI composite electrode material in an aqueous zinc-iodine battery. The preparation method comprises the following steps: dissolving Bi (NO3) 2 in a mixed solution of ethanol and ethylene glycol, adding biomass carbon fired from coconut shells, stirring at room temperature, and carrying out a hydrothermal reaction; and carrying out suction filtration and drying after hydrothermal reaction, mixing the dried composite material with a potassium iodide solution, and anchoring an active substance iodine on the material by a solution adsorption method to obtain the C-coated BiOI composite electrode material. According to the material, C-coated Bi2O3 is prepared through a simple one-step hydrothermal method, then an active substance iodine is anchored on the material through a solution adsorption method, and through a special reaction between bismuth oxide and iodide ions, the iodide ions are captured and release of the iodide ions is delayed in the process, and contact between the iodide ions and an iodine elementary substance is avoided, so that the shuttle effect is avoided, and the stability of a zinc-iodine battery is realized; and due to oxidation reduction of Bi2O3, considerable capacity can be provided, and the overall performance of the water-based zinc-iodine battery is improved through a synergistic effect.

The invention discloses a quaternary ammonium surfactant with a fluorocarbon-silicon-carbon double hydrophobic chain and a preparation method thereof, wherein the preparation method is by N-((dimethylamino) methyl)-4,4,5,5,6,6,6-heptafluoro-3,3-bis(trifluoromethyl) hexanoamide, 3-chloropropylmethyldimethoxysilane, potassium iodide and solvent in a reaction vessel, heating and stirring are completely dissolved to raw material, temperature reaction is continued afterwards, solvent and water are removed by decompression distillation after the reaction terminates, and washed with ethanol until washings do not change color, to obtain a quaternary ammonium surfactant with a fluorocarbon-silicon-carbon double hydrophobic chain;The surfactant is free of perfluorooctanoic acid (PFOA) and perfluorohexanesulfonic acid (PFHxS) substances, possesses environmentally friendly characteristics, will not have an impact on human nervous system, immune system, endocrine system and genetic information etc., can effectively produce foam, with good heat stability, it is possible to improve the foaming performance and the burning resistance of foam fire extinguishing agent. Wetting agent aspect can reduce aqueous solution surface tension, wets low-energy surface.

This invention provides a highly sensitive and rapid nitrite detection kit and method. The kit includes a detection solution, a standard colorimetric card, and test tubes. The molar ratio of sulfuric acid, potassium iodide, and starch indicator is 3:4:39. This invention solves the problems of existing nitrite detection technologies, such as reliance on specialized instruments and laboratory environments, cumbersome and time-consuming operation, inability to meet the needs of on-site, real-time testing, poor matrix compatibility of detection kits, lack of graded warnings based on national food safety standards and toxicological risks, insufficient reagent stability, and difficulty in balancing detection sensitivity and accuracy. It features convenient operation, suitability for on-site, real-time testing; excellent detection performance, accurate and reliable results; stable physicochemical properties of the detection solution, good storage properties; intuitive risk classification, and strong practicality.

The invention relates to an ultra-thin iodine polaroid, a preparation method and an ultra-thin circular polaroid, and the ultra-thin iodine polaroid comprises polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol and iodine and / or potassium iodide dispersed in the polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol in a dissolving manner. According to the invention, iodine and / or potassium iodide are / is dissolved and dispersed in polyethylene glycol terephthalate-1, 4-cyclohexanedimethanol, and the ultrathin iodine polarizer is finally obtained through the steps of material mixing, distillation, extrusion, coating, curtain coating, one-way calendering, stretching and drying. On the first aspect, iodine and / or potassium iodide are dispersed more uniformly by adopting a dissolving and dispersing mode, so that the degree of polarization and the light transmittance of each part of the polaroid are guaranteed; on the second aspect, the polaroid does not need to be clamped and fixed by a cellulose triacetate film, so that the thickness of the polaroid can be further reduced; and thirdly, a retarder is compounded on the ultra-thin iodine polaroid, so that the purpose of manufacturing the ultra-thin circular polaroid is achieved.

The utility model relates to the technical field of etching equipment, and discloses an etching structure which comprises a tank body, a first motor is fixedly assembled at the bottom of the tank body, a sliding groove is formed in the outer wall of the tank body, a lead screw is fixedly assembled on an output shaft of the first motor, a lifting block is connected to the outer wall of the lead screw in a threaded mode, and the lifting block is fixedly connected with the bottom of the tank body. A fixing rod is fixedly assembled at the top of the lifting block, and a top cover is fixedly assembled at the tail end of the fixing rod. According to the etching structure, through the arrangement of the tank body, the first motor, the sliding groove, the lead screw, the lifting block, the fixing rod, the top cover and the storage tank, in the operation process of the equipment, a user can lift a filter screen through operation of the first motor, so that the user can conveniently place a sample; and silicon dioxide and potassium iodide are utilized to soak the sample in the operation process, so that the condition of excessive etching is avoided, the etching precision of a user on the sample is further guaranteed, and the practicability of the equipment is also improved.

The invention relates to the technical field of high polymer material analysis and detection, in particular to a method for detecting the content of polymeric microspheres, which comprises the following steps: (1) obtaining a to-be-detected solution in which suspended particles and organic impurities are removed; (2) mixing the to-be-detected solution with an excessive potassium iodide solution, and adjusting the pH value to obtain a mixed solution; (3) adding excessive sodium hypochlorite solution into the mixed solution to oxidize acylamino in the polymer microspheres to generate chloramine; (4) adding an acetic acid solution to terminate the reaction to generate elemental iodine; (5) titrating the generated iodine through a standard sodium thiosulfate solution, and recording the consumption volume; and (6) calculating the content of the polymer microspheres. By optimizing the sample treatment process and introducing an anti-interference mechanism, the accuracy and reliability of the detection result are remarkably improved.

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.