影响高锰酸盐指数测定的关键因素

Key Factors Affecting the Index Determination of CODMn

本文分析了影响高锰酸盐指数(CODMn)测定的关键因素,包括样品的保存、空白值、酸度、加热时间、滴定时间、滴定温度等。结果表明,该项目指标的测定条件具有相对性,试验操作过程直接影响分析结果的准确性和稳定性,通过严格控制测定条件可以极大提高结果的准确度及精密度。

This paper analyzes the key factors affecting the index determination of the CODMn,including sample storage,blank value,acidity,heating time,titration time,titration temperature and so on.The results show that CODMn is a relatively conditional indexes,the experimental operations directly affect the accuracy and stability of the analysis results.It will be greatly improves the accuracy and precision of the results by strictly controlling the measurement conditions.