络合滴定法和电位滴定法测定自来水中Ca^(2+)、Mg^(2+)比较  

Comparison of Complexation Titration and Potentiometric Titration in Detection Ca^(2+) and Mg^(2+) in Water

作　　者：何武强[1] 

机构地区：[1]中南民族大学工商学院环境与生命科学系,湖北武汉430074

出　　处：《广东化工》2010年第12期200-201,共2页Guangdong Chemical Industry

摘　　要：通过络合滴定法和电位滴定法对自来水中Ca2+、Mg2+离子总含量的分析,得出电位滴定法较传统的络合滴定法的分析周期更短,操作过程容易控制,相对偏差小且分布范围窄,有效避免了络合滴定法中对终点颜色判断带来的偶然误差。The paper analyzed the contents of the Ca^2＋ , Mg^2 ＋ ions in water by complexometric titration and potentiometric titration. The more conventional potentiometric titration analysis of complex cycles shorter, easy to control operation, and the relative deviation was small and narrow distribution, effectively avoiding the complexometric titration method to determine the color of the finish caused by accidental errors.

关 键 词：络合滴定 电位滴定 水硬度 

分 类 号：TQ[化学工程]