土壤中水溶性SO_4^(2-)化学分析方法对比

Comparison of Water Soluble SO_4^(2-) Chemical Analysis Methods in Soil

土壤中水溶性硫酸根离子的化学分析有很多种方法,近年来通过不断的改进大大提高了测试精度,本文总结了常见的方法,并通过实际样品测试对比了重量法、铬酸钡容量法和EDTA络合滴定法的结果,为试验人员在方法的选择上提供借鉴。

There are many methods fo r the chemical analysis of water soluble sulfate ion in soil. In recent years, through continuous improvement, the test accuracy has been greatly improved. This paper summarizes the common methods, and compares the results of gravimetric method, barium chromate volumetric method and EDTA complexometric titration method through actual sample test, which provides reference for the test personnel in the selection of methods.