摘要
通过对乙二胺四乙酸 (EDTA)滴定检测硫酸根离子法的改进 ,实现了可以同时消除钙、镁及其他重金属离子、碳酸根离子、磷酸根离子干扰的目的。该方法简单、快捷、准确度高 ,加标回收率为 96 .38%～ 99.6 9% ,变异系数为 1.2 %～ 1.4 9% ,尤其适用于污染较为严重水体的分析。
EDTA titration method has been improved to determine sulfuric acid radical ion,eliminating the interference of Ca 2+ ,Mg 2+ and other heavy metallic ions,CO 2- 3 and PO 4 3- .The method is characterized by simplicity,rapidity and high accuracy.The recovery of marked compound is 96.38%～99.69%,and the coefficient of variation is 1.2%～1.48%.It is particularly applicable to the analysis of gravely polluted water.
出处
《化工环保》
CAS
CSCD
北大核心
2003年第1期42-45,共4页
Environmental Protection of Chemical Industry
