自备井水中溶解性总固体快速测定方法的研究

Self-provided well water solubility of total solid rapid determination method of research

目的：建立一种测定自备井水中溶解性总固体的方法。方法利用附有溶解性总固体测定功能的电导率仪，直接测定自备井水中的溶解性总固体含量。结果该法与国标法比较，无明显差异，相对标准偏差为0．17％～0．22％，加标回收率为97．5％～98．6％。结论该法测定自备井水中溶解性总固体，具有快捷、简便、精密度好、准确度高的特点，适用于大批量水样的快速测定。

Objective To establish a method for determination of total soluble solids （TDS） in self-provided well water .Methods The conductivity meter which has a function of determination of total soluble solid ,and was used to directly determinate the total soluble solids in self-provided well water .Results Compared with national standard method ,the results have no significant differ-ence .The relative standard deviation （RSD） was 0 .17% -0 .22% ,and the recovery rates of standard was 97 .5% -98 .6% .Conclu-sion The method is quick ,simple ,sensitive ,accurate and suitable for rapid determination of large quantities of waters .