電導(dǎo)率儀測(cè)定生活飲用水中溶解性總固體方法的研究

RESEARCH ON THE DETECTION OF TOTAL DISSOLVED SOLIDS IN DRINKING WATER BY CONDUCTIVITY METER HONG Xiang- qi. www.saikehb.cn/
研究水對(duì)飲用水中總?cè)芙夤腆w電導(dǎo)檢測(cè)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(kāi)發(fā)出一種簡(jiǎn)單，方便，檢測(cè)飲用水中溶解性總固體準(zhǔn)確，經(jīng)濟(jì)的方法。

[Methods ] The content of total dissolved solids in drinking water was detected by conductivity meter.
[方法]對(duì)飲用水中溶解性總固體含量檢測(cè)電導(dǎo)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(biāo)準(zhǔn)差是零，無(wú)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(wú)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(cè)飲用水中的電導(dǎo)率儀水總?cè)芙夤腆w的方法具有較高的便利性，準(zhǔn)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(dǎo)率儀;飲用水，總存款保險(xiǎn)計(jì)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(biāo)中的一個(gè)。它的測(cè)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(cè)定時(shí)間長(zhǎng)、花費(fèi)較多的勞力和電量、當(dāng)水樣中含有大量能形成結(jié)晶水的無(wú)機(jī)鹽類時(shí)還需加某些試劑( 如Na2CO3) 、每次不能測(cè)定大批量水樣等缺點(diǎn)。為了解決這些問(wèn)題, 本文通過(guò)實(shí)驗(yàn)研究出用電導(dǎo)率儀法測(cè)定生活飲用水中溶解性總固體的方法。該法操作極為簡(jiǎn)便、快捷, 每次可測(cè)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。