EDTA滴定法测定水中总硬度时缓冲溶液配制的改进

Improvement of Preparation of Buffer Solution on Determination of Total Hardness in Water Sample

针对EDTA滴定法测定水中总硬度(简称标准法)时,缓冲溶液配制繁琐,耗时较长的情况,提出了对缓冲溶液配制的改进方法(简称改进法)。改进法很好地克服了标准法的不足。通过地表水、地下水以及总硬度标准样品的比对测定,两者的测定结果无显著差异。

When determining total hardness in water sample by EDTA titration,preparation of buffer solution is tedious and takes long time.The author puts forward the improved method of preparation of buffer solution.Improved method overcomes the deficiencies of the standard method.By comparison measurement of surface water、groundwater、standard sample of total hardness,the results have no significant differences.