库仑滴定法测定微量水及卡尔.费歇试剂的改进探讨

库仑滴定法测定微量水是快速 ,准确测定微量水的分析方法 ,这是应用卡尔 .费歇试剂的化学测水法。经典 K- F试剂缺点是毒性大 ,且具有吡啶的恶臭。本文介绍一种新的试剂 ,新试剂用乙二胺代替吡啶 ,无恶臭 ,并具有反应速度快 ,终点稳定 ,贮存时间长 ,应用范围广等特点。

The coulometric titration is a quick and accurate analysis method to measure micro-quantity of water and applies Karl Fischer reagent as a chemical water measurement. The typical K-F reagent has disadvantage of high poisonousness and pyridine malodor. This paper will introduce a kind of new reagent ethylenediamine that can substitute for pyridine. Ethylenediamine has many features: no malodor, reacting quickly, stable end point, long storage, extensive application and etc.