氯化钡直接法测定地下水中硫酸根含量的研究

STUDY ON DIRECTLY DETERMINING THE CONTENT OF SO_4^(2-) IN UNDERGROUND WATER THROUGH THE BaCl_2 METHOD

氯化钡直接法以茜素红-S为指示剂，用氯化钡标准溶液滴定，直接测定地下水中硫酸根的含量。与EDTA容量法等方法进行比较，氯化钡直接法简便、快速，其准确度、精密度、相关性等均获得满意结果，适合在地震监测水质分析中运用。

The BaCl_2 method is a method of directly determining the content of SO in underground water, Which uses alizarin-S as indictator. standard BaCl2 solution as titrant. Compared with other methods like EDTA content method, the BaCl2 method is easy, fast, and has higher accuracy, precision and relativety. fit for water quality analysis in earthquake momtoring.