阳离子表面活性剂中浓度检测方案(自动电位滴定)

KoM KYOTO ELECTRONICSMANUFACTURING CO.，LTD.TIQ-98053enL网址： http：//www.kem-china. com-K-MKYOTOELECTRONICSMANUFACTURING CO.，LTD. Application Memo Determination of Cationic Surfactant Industry Inorganic chemical industryInstrument Automatic potentiometric titratorMeasurement method Ionic titration Standards 1. Overview JIS K3362-2008 specifies test method for synthetic detergent. But here we demonstratedetermination by using the particle changer detector unit (PCD-500) and the automaticpotentiometric titrator. This method does not use toxic chloroform and indicator， and theendpoint is found automatically. This method makes use of quantitative ion associationreaction and determines the endpoint by stoichiometry. The ion concentration can be obtainedwith good precision based1 g on the same principle as the Epton Method. To begin with， dilutesample liquid with pure water to prepare the test sample. Transfer the prepared sample with awhole pipette， and titrate with 0.04mol/L sodium dodecyl sulfate (SDS) using PCD-500. Thesudden change of streaming potential is the endpoint. The concentration of surfactant iscalculated from the titration volume. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier STD)Particle changer detector unit (PCD-500) 3. Reagents Titrant 0.004mol/L sodium dodecyl sulfate (SDS) Solvent Distilled water 4. Example —Measurement results· s- Sample Titer Surfactant (g) (mL) (%) 1 22.6226 8.9745 10.759 2 22.6226 8.9287 10.704 3 22.6226 8.9979 10.787 Average 10.750 SD .042 RSD(%) 0.39 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 阳离子表面活性剂的测定 应用资料(英文版)GB/T 5174-2018 表面活性剂 洗涤剂 阳离子活性物含量的测定 直接两相滴定法。但是，我们使用粒子电位探测器单元(PCD-500)和自动电位滴定仪的测量。该方法不使用有毒的三氯甲烷和指示剂，并能自动找到终点。首先，用纯水稀释样品液体，以制备测试样品。用整个移液管转移制备好的样品，在PCD-500上用0.004mol/L月桂基硫酸钠/十二烷基硫酸钠(SDS)滴定，流动电位的突然变化就是终点。表面活性剂的浓度由滴定体积计算得出。