溴化钾-溴酸钾标准溶液中标定检测方案(其它石油专用分析仪器)

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溴化钾-溴酸钾标准溶液(0.25mol/L)的标定 应用资料溴化钾-溴酸钾标准溶液(0.25mol/L)的标定方法参考: GB/T 11135, JIS K2605, ASTM D1159和ISO 3839。加入50mL冰乙酸和1mL浓盐酸，加入5mL溴化钾-溴酸钾标准溶液，放到冰水浴中，加5mL碘化钾溶液，用0.1mol/L硫代硫酸钠溶液进行滴定。京都電子工業株式会社KYOTO ELECTRONICSTIQ-99288enLMANUFACTURING CO.，LTD1/1京都電子工業株式会社KYOTO ELECTRONICSMANUFACTURING CO.，LTD Application Memo Mol Concentration of 0.25mol/L Potassium Bromide-Potassium Bromate 1.Overview Measurement of 0.25mol/L potassium bromide-potassium bromate reference liquid used forbromine number test of petroleum products is stipulated in the standards of GB/T 11135，JIS K 2605， ASTM D1159 and ISO 3839. The test procedure is follows： 1) Acidify predetermined amount of Potassium bromide-potassium bromate reference solution cooled in ice water with acetic acid + hydrochloric acid.2) Add potassium iodide to free iodine and titrate the freed iodine with 0.1mol/L sodium thiosulfate up to the endpoint. The mol concentration of 0.25mol/L potassium bromide-potassium bromate reference liquid iscalculated from the titration volume. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier POT)Electrode Combined platinum electrode 3. Reagents Titrant 0.1mol/L sodium thiosulfate solution Additive 0.25mol/L potassium bromide -potassium bromatePure water， Hydrochloric acid， Acetic acid， 15% potassium iodide 4. Example Titer Mol (mL) (mol/L) 1 2 3 26.5360 0.2664 26.5888 0.2670 26.5973 0.2670 Average 0.2668 0.0003 0.1 SD RSD(%) 32.000 [mL] -Titration curve- Please feel free to contact us for any further information. Kyoto Electronics Manufacturing Co.， Ltd.