摘要
在工业水质监测中，需要随时测定水中ＨＣＯ－３的含量。常规的化学方法是通过测总碱度计算出ＨＣＯ－３的含量。而电位滴定法，电位突跃小，很难确定终点，误差大。现采用电导滴定法快速测定工业水中ＨＣＯ－３的含量，用ＨＣｌ作滴定剂，随着滴定剂滴入，水中电导率发生变化，通过测电导率值绘制滴定曲线，确定滴定终点，求出ＨＣＯ－３的含量。方法简单、快速、结果准确，精密度高，极易确定滴定终点。此法适合水质检验、环境监测和工业生产监控。
It is necessary to determined the content of HCO - 3 in water very often for the monitoring of industrial water quality. The conventional method is to calculate the HCO - 3 content through measurement of the total alkalinity while potentiometric titration easily produces errors and it is hard to determine the finals because of small electric potential abruptness.Now with conductometry the content of HCO - 3 in water can be fast measured with HCl as titrant. The conductivity changes as titrant goes into water and a curve can be worked out according to the measured values of conductivity. Thus the titration finals can be reached and HCO - 3 content can be determined. This method is simple, fast, perfect, acurate and easy to determine titration finals. It is suitable for determining water quality, monitoring enviorment and controling industrial production.
出处
《抚顺石油学院学报》
EI
1998年第3期39-41,共3页
Journal of Fushun Petroleum Institute
关键词
电导滴定法
工业水
测定
碳酸氢根
Conductometry
Industrial water
Heavy carbonic acid radical
