测定总硬度的三种方法的验证分析

Validation Analysis of Three Methods for the Determination of Total Hardness

一般采用经典的EDTA络合滴定法测定水体钙镁总硬度。此外还有火焰原子吸收法和市售总硬度快速测试盒。本文验证分析这三种方法的优缺点,结果表明,火焰原子吸收法最适合污水实验室使用。

Generally,the total hardness of calcium and magnesium in water is determined by EDTA complexometric titration.In addition,there are flame atomic absorption method and commercial quick test box for total hardness.In this paper,the advantages and disadvantages of these three methods are verified and analyzed.The results show that the flame atomic absorption method is most suitable for the determination of total hardness in Laboratory of sewage treatment plant.