广州化工
廣州化工
엄주화공
GUANGZHOU CHEMICAL INDUSTRY AND TECHNOLOGY
2011年
14期
105-106
,共2页
电位滴定%硝酸银%烧碱
電位滴定%硝痠銀%燒堿
전위적정%초산은%소감
potentiometry vtitration%silver nitrate%sodium hydroxide
采用电位滴定分析法测定烧碱中氯含量：以浓硝酸中和烧碱并过量，用硝酸银作标准溶液为滴定剂，在乙醇介质中，以Ag—Ag2S电极作指示电极，双液接型甘汞电极为参比电极进行电位滴定，根据电位突跃确定滴定终点，方法相对误差0．047％，相对标准偏差0．00025％；平均回收率为99．80％。
採用電位滴定分析法測定燒堿中氯含量：以濃硝痠中和燒堿併過量，用硝痠銀作標準溶液為滴定劑，在乙醇介質中，以Ag—Ag2S電極作指示電極，雙液接型甘汞電極為參比電極進行電位滴定，根據電位突躍確定滴定終點，方法相對誤差0．047％，相對標準偏差0．00025％；平均迴收率為99．80％。
채용전위적정분석법측정소감중록함량：이농초산중화소감병과량，용초산은작표준용액위적정제，재을순개질중，이Ag—Ag2S전겁작지시전겁，쌍액접형감홍전겁위삼비전겁진행전위적정，근거전위돌약학정적정종점，방법상대오차0．047％，상대표준편차0．00025％；평균회수솔위99．80％。
The potentiometry titration can be used to determine the content of chlorine ion in sodium hydroxides. The pracess was that neutralize sodium hydroxides with excessive concentrated nitric acids, using the standard liquor of silver nitrate as the titrant, the potentiometry titration was operated in grain alcohol mediums, using the Ag- Ag2S electrode as the indicator electrode, and the double junction electrode calomel electrode as the reference electrode, while the endpoint of titration was determined according to potential jumps. The methodological fractional error was 0. 047%, the comparatively standard deviation was 0. 00025%, and the average recovery rate was 99.80%.
