RESEARCH ON THE DETECTION OF TOTAL DISSOLVED SOLIDS IN DRINKING WATER BY CONDUCTIVITY METER HONG Xiang- qi. www.saikehb.cn/

研究水對飲用水中總?cè)芙夤腆w電導檢測洪祥氣儀表。

[ Objective ] To develop an easy, convenient, accurate and economic method for detecting total dissolved solids in drinking water.

[目的]開發(fā)出一種簡單，方便，檢測飲用水中溶解性總固體準確，經(jīng)濟的方法。

[Methods ] The content of total dissolved solids in drinking water was detected by conductivity meter.

[方法]對飲用水中溶解性總固體含量檢測電導率儀。

[ 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 100% or near 100%, no matter the content of total dissolved solids was high or low ( ≥1 000 mg/L or﹤1 000 mg/L) .

[結(jié)果]該方法的標準差是零，無論是總?cè)芙夤腆w含量高或低（≥1000毫克/升或“<1000毫克/升）。平均回收率（除射擊在105℃± 3此外氯化鈣后℃）為100％或接近100％，無論是總?cè)芙夤腆w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.

[結(jié)論該離子]用于檢測飲用水中的電導率儀水總?cè)芙夤腆w的方法具有較高的便利性，準確性，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

關(guān)鍵詞：電導率儀;飲用水，總存款保險計劃解決固體;研究

溶解性總固體是衡量生活飲用水的質(zhì)量指標之一。它的測定方法按照《生活飲用水衛(wèi)生規(guī)范》[1] 中的稱量法操作。該法存在著測定時間長、花費較多的勞力和電量、當水樣中含有大量能形成結(jié)晶水的無機鹽類時還需加某些試劑( 如Na2CO3) 、每次不能測定大批量水樣等缺點。為了解決這些問題, 本文通過實驗研究出用電導率儀法測定生活飲用水中溶解性總固體的方法。該法操作極為簡便、快捷, 每次可測定大批量水樣, 回收率與稱量法( 除采用加CaCL2、105℃ ±3℃烘烤之外) 基本一致, 而且該法的精密度比稱量法好, 耗能又極低。