非水电位滴定法测定甲烷氯化物微量酸度  

Determination of micro acidity of methane chloride by non-aqueous potentiometric titration method

作　　者：沈治荣[1,2] 胡必明[2] 何红莲[2] 

机构地区：[1]四川大学化工学院,四川成都61065 [2]自贡鸿鹤化工股份有限公司,四川自贡64300

出　　处：《中国氯碱》2009年第11期36-38,46,共4页China Chlor-Alkali

摘　　要：介绍了用全自动电位滴定仪测定二氯甲烷、三氯甲烷和四氯化碳产品中微量酸度。此方法实现了从取样到分析的全封闭操作过程,方法的相对标准偏差为1.9%-6.5%。本方法准确、快速、简便,弥补了萃取法测定酸度时操作繁琐、测试误差大等缺点,完全能够满足甲醇法甲烷氯化物产品中微量酸度的测试需要。The automatic potentiometric titrator was established for determination of micro acidity in dichloromethane, trichloromethane and carbon tetrachloride, which realized whole closed operation from sampling to analysis. RSD of the method were 1.9% - 6.5%. The method was accurate, simple and rapid, and made up for shortcomings of extraction method, and met the requirements for determination of micro acidity of methane chloride.

关 键 词：酸度 甲烷氯化物 电位滴定 二氯甲烷 三氯甲烷 四氯化碳 

分 类 号：TQ207.4[化学工程—有机化工]