电镀溶液中重铬酸钠含量的测定 应用资料

智能文字提取功能测试中

电镀溶液中重铬酸钠含量的测定 应用资料在样品中加入硫酸(1+1)和二苯胺后，用0.2mol/L硫酸亚铁铵滴定溶液滴定，测量电镀溶液中的重铬酸钠(二水合重铬酸钠，Na2Cr2O7)。终点是滴定曲线上的最大拐点。重铬酸钠浓度是根据硫酸亚铁铵的滴定体积计算得出的。KGMKYOTO ELECTRONICSMANUFACTURING CO.，LTD.TIQ-94014enL Application Memo Sodium Dichromate in Plating Solution 1.Overview Sodium dichromate (sodium dichromate dihydrate， Na2Cr2Or) i n plating solution i s measured by t itration with 0.2mol/L ferrous ammonium sulfate after adding sul f uric acid (1+1) and diphenylamine to the sample. The endpoint is the maximum inflexion on t he t itration curve.The sodium dichromate concentration is calculated from the titration volume of ferrous ammonium sulfate. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier STD) Electrode Platinum electrode Ceramic reference electrode 3. Reagents Titrant 0.2mol/L (0.2N) f errous ammonium sulfate Solvent Pure water Additive Sulfuric acid (1+1)， 1% diphenylamine Please feel free to contact us for any further information. Kyoto Electronics Manufacturing Co.， Ltd. Overseas Sales & Marketing Sect. 京都电子工业株式会社-可睦电子(上海)商贸有限公司 上海市徐汇区宜山路333号1201室 电话： 021-54488867 电邮： kemu-kem@163.com 网址： http：//www.kem-china.com