汽油中碱值的测定 应用资料

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汽油中碱值的测定 应用资料试样溶解于滴定溶剂中，以高氯酸冰乙酸标准滴定溶液为滴定剂，以玻璃电极为指示电极，甘汞电极为参比电极进行电位滴定，用电位滴定曲线的电位突跃判断终点。TIA-98003enLK-MKYOTO ELECTRONICSMANUFACTURING CO.，LTD. Application Memo Total Base Number of Gasoline 1.Overview The standard test method of total base number of petroleum products and lubricant is specifiedby JIS K 2501-2003“Petroleum products and lublicants - Determination of neutralizationnumber". The test sample is dissolved in mixture of chlorobenzene and acetic acid and titratedwith 0.1mol/L perchloric acetate solution up to the endpoint.Total base number is calculated from the titration volume of perchloric acetate. 2. Apparatus Main unitAutomatic potentiometric titrator (preamplifier STD) Electrode pH glass electrode Double junction reference electrode Temperature compensation electrode 3. Reagents Titrant 0.1mol/L perchloric acetic acid solution Solvent Chlorobenzene + Acetic acid (2+1) 4. Example Sample Titer Total basenumber (g) (mL) (mg/g) 1 3.0132 5.1037 9.5021 2 3.0167 5.1071 9.4974 3 3.0170 5.0961 9.4760 Average 9.4918 SD 0.0139 RSD(%) 0.147 -Titration curve- 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