摘要
该文对酸度测定的自动库仑滴定法进行了深入研究,设计了以锑作指示电极、钨作参比电极的库仑电解池。该文以特殊处理的1 mol/L KCI溶液为电解液,确定了最佳电解电流,较好解决了电极体系的稳定性和结果的准确度,使方法具有创新和很好的实用性。该法用于复杂水样分析,结果令人满意。
A new method for determination of acidity by automatic coulometric titration, using KLT - 1 Type universal coulometric instrument made in China has been developed. In this paper, a coulometric titration cell was designed in which the antimony electrode was used as an indicating electrode and tungsten as a reference electrode, and established a new coulometric titration method. To indicate end point and to stop electrolysis automatically by means of potential drop. The electrolyte solution was 1 mol/L KCl, which was treated especially.
The new method is simple, quick and the analytical results of pure material such as acetic acid are satisfactory with RSD≤1. 8% (n = 7) and relative error≤5. 1%. The method has been applied to determination of acidity in actual complex water samples with satisfactory results. So it is worth popularizing for the new method in factories and laboratories.
出处
《化学传感器》
CAS
2002年第3期27-32,共6页
Chemical Sensors
关键词
自动库仑滴定法
酸度测定
水样分析
锑电极
acidity, coulometric titration, antimony electrode, water sample
