乳酸中浓度检测方案(自动电位滴定)

乳酸的浓度测定 应用资料用0.1mol/L氢氧化钠滴定2w/w%-乳酸溶液的样品至pH8.2，酚酞改变其颜色。将滴定体积转换为乳酸以确定浓度。TIZ-99256enLIKYOTO ELECTRONICSMANUFACTURING CO.，LTD. Application MemoConcentration of Lactic Acid 1.Overview Titrated the sample of 2w/w%-lactic acid solution with 0.1mol/L sodium hydroxide up topH8.2 where phenolphthalein changes its color. The titration volume was converted to lacticacid to determine concentration. 2. Apparatus Main unit Automatic potentiometric titrator (preamplifier STD) Electrode Combined glass electrodeTemperature compensation electrode 3. Reagents Titrant 0.1mol/L sodium hydroxide 4. Example Sample size(g) Titer (mL) Concentration(w/w%) 1 2 3 2.182 2.223 2.236 4.0406 4.1496 4.1499 1.612 1.625 1.616 AverageSD RSD(%) 1.617 0.007 0.4 -Titration curve一 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