电导率仪测定生活饮用水中溶解性总固体方法的研究

RESEARCH ON THE DETECTION OF TOTAL DISSOLVED SOLIDS IN DRINKING WATER BY CONDUCTIVITY METER HONG Xiang- qi. /
研究水对饮用水中总溶解固体电导检测洪祥气仪表。

[ Objective ] To develop an easy, convenient, accurate and economic method for detecting total dissolved solids in drinking water.
[目的]开发出一种简单，方便，检测饮用水中溶解性总固体准确，经济的方法。

[Methods ] The content of total dissolved solids in drinking water was detected by conductivity meter.
[方法]对饮用水中溶解性总固体含量检测电导率仪。

[ Results ] The standard deviation of the method was zero, no matter the content of total dissolved solids was high or low ( ≥1000 mg/L or﹤1000 mg/L) .The average recovery ( except for firing in 105℃±3℃ after addition of CaCl2 )was 99% or near 99%, no matter the content of total dissolved solids was high or low ( ≥1 000 mg/L or﹤1 000 mg/L) .
[结果]该方法的标准差是零，无论是总溶解固体含量高或低（≥1000毫克/升或“<1000毫克/升）。平均回收率（除射击在105℃± 3此外氯化钙后℃）为100％或接近100％，无论是总溶解固体含量高或低（≥1 000毫克/升或“<1 000毫克/升）。

[ Conclus ion] The method for detecting total dissolved solids in drinking water by conductivity meter is of high convenience, accuracy, precision,recovery, reliability, and low energy consumption.
[结论该离子]用于检测饮用水中的电导率仪水总溶解固体的方法具有较高的便利性，准确性，精密度，回收率，可靠性和低能源消耗。

Key words: Conductivity meter; Drinking water; Total dis solved solids ; Research
关键词：电导率仪;饮用水，总存款保险计划解决固体;研究

溶解性总固体是衡量生活饮用水的质量指标中的一个。它的测定方法按照《生活饮用水卫生规范》[1] 中的称量法操作。该法存在着测定时间长、花费较多的劳力和电量、当水样中含有大量能形成结晶水的无机盐类时还需加某些试剂( 如Na2CO3) 、每次不能测定大批量水样等缺点。为了解决这些问题, 本文通过实验研究出用电导率仪法测定生活饮用水中溶解性总固体的方法。该法操作极为简便、快捷, 每次可测定大批量水样, 回收率与称量法( 除采用加CaCL2、105℃ ±3℃烘烤之外) 基本一致, 而且该法的精密度比称量法好, 耗能又极低。