蚝油中总酸检测方案(自动电位滴定)

智能文字提取功能测试中

蚝油中总酸含量的测定 应用资料根据酸碱中和原理，用氢氧化钠标准滴定溶液滴定试液中的酸，中和试样溶液至pH为8.2时，确定为滴定终点。按碱液的消耗量计算食品中的总酸含量。TIG-01017enL电话：021-54488867 电邮： kemu-kem@163.com网址： http：//www.kem-china.com-K-MKYOTO ELECTRONICSMANUFACTURING CO.，LTD. Application Memo Acidity of Oyster Sauce Industry Food & beverage Instrument Automatic potentiometric titrator Measurement method Acid base titration Standards GB 12456，GB/T 5009.39，GB/T21999 1.Overview Acetic acid concentration as acidity of the diluted sample is measured by titration with0.1mol/L sodium hydroxide up to pH8.2. The acetic acid concentration is calculated from thetitration volume of the sodium hydroxide. 2. Apparatus Main unitAutomatic potentiometric titrator (preamplifier STD) Electrode Combined glass electrode Temperature compensation electrode 3. Reagents Titrant 0.lmo1/L sodium hydroxide 4. Example -Measurement results- Sample Titer Concentration (g) (mL) (mg/g) 1 1.0065 0.9866 5.934 2 1.0088 0.9934 5.962 3 1.0057 0.9874 5.944 Average 5.947 SD 0.014 RSD(%) 0.23 -Titration curve- 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