次氯酸钠溶液中有效氯含量的测定 应用资料

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次氯酸钠溶液中有效氯含量的测定 应用资料在样品溶液中加入碘化钾和1mol/L硫酸后，用0.1mol/L硫代硫酸钠溶液滴定，测定次氯酸钠的浓度。终点是滴定曲线上的最大拐点。次氯酸钠浓度由硫代硫酸钠的滴定体积计算得出。KGM KYOTO ELECTRONICSMANUFACTURING CO.，LTD.TIQ-97001enL Application Memo Sodium Hypochlorite Concentration Industry Inorganic chemical i ndustry Instrument Automatic potentiomet r ic t itrator Measurement method Redox titration， GB 19106 1.Overview After adding potassium iodide and 1mol/L sulfuric acid t o the sample solution， sodium hypochlorite concentration is measured by titration with the 0.1mol/L sodium thiosulfate solution. The endpoint is the maximum inflexion on the titration curve. The sodium hypochlorite concentration is calculated from the titration volume of sodium thiosul f ate. 2.Apparatus Main unit Automatic potentiomet r ic t itrator (preamplif i er STD) Electrode Platinum electrode Ceramic reference electrode 3.Reagents Titrant 0.1 mol/L sodium thiosulfate solution Additive Potassium iodide， 1mol/L sulfuric acid 4.Example -Measurement results- Average (%) 1.0113 SD(%) 0.0146 RSD(%) 1.44 -Titration curve- Please feel free to contact us for any f urther i nformation. Kyoto Electronics Manufacturing Co.， Ltd. Overseas Sales & Market i ng Sect. 上海市徐汇区宜山路333号1201室