对地表水中高锰酸盐指数测定的改进

Improvement on Determination of Permanganate Index in Surface Water

对比国家标准方法与HACH预制管法对地表水中高锰酸盐指数测定的影响,并进行探讨。实验表明:HACH法相对传统滴定法,操作更简单,重现性更好,能避免产生系统误差,减少偶然误差,且人为误差小。

This article compares the effects of two testing methods, the national standard method （GB） and the HACH method,on the determination of Permanganate Index in surface water. Compared with the GB method, the HACH method is more feasible, and reproduciable .It is able to avoid the systermatical errors, reduce the random errors and lower operative errors.