饱和卤水中大量Li^＋存在对K^＋和Mg^2＋分析结果的影响

The Influence of large quantity Lithium ion on the analytical result of Potassium and Magnesium ions in saturated brine

中文关键词:  卤水 锂 正丁醇 乙醇 饱和卤水

英文关键词:Brine. Lithium, n-Butyl alcohol, Ethanal,

中文摘要:

      含锂海水体系中由于Ｌｉ＾＋的介入使得Ｋ＾＋，Ｍｇ＾２＋的分析结果受到一定程度的影响，本实验针对这个问题进行了一系列的条件实验，证明大量Ｌｉ＾＋存在对Ｋ＾＋的分析结果没有影响，而对Ｍｇ＾２＋的分析影响较大，此种情况下对Ｍｇ＾２＋的分析采用正丁醇－乙醇混合液掩蔽法和二次沉淀法分析，此法的相对误差不超过０．５％。

英文摘要:

      It was experimentally proved that the influence of lithium ion on the KB (C6H5) 4 gravimetric analysis of potassium ion is negligible and the influence of the interference of lithium on magnesium complex titration is obvious. By adding a mixture solution of n-butyl alcohol and ethanal (1: 10) or reprecipitating to eliminate the influence.The error of analytical results is less than 0. 5%.