FIA-ISE联用技术测定工业锅炉水总碱度

摘要

目前工业锅炉水的总碱度主要用指示剂法测定,但该方法费时,且不便于自动化.流动注射分析(FIA)技术具有快速、准确等特点,近几年来发展异常迅速.流动注射分析与离子选择性电极(ISE)联用技术用于测定溶液总碱度具有很好的效果.作者使用CN111型工业pH计与FIA联用技术测定了工业锅炉水中的总碱度并取得了满意的结果.该方法可实现对工业锅炉水总碱度的快速测定.%The alkalinity of industrial boiler water has mainly been determined by using acid base titration based on indicator method, but it is time consuming and not suitable for automation. Flow injection analysis (FIA) is a rapid,accurate and recently well-developed method. When the flow injection analysis coupled with an ion selective electrode is used for determining the alkalinity of the solution, pretty good effect can be obtained. When the industrial pH meter(CN 111 ) coupled with the FIA is used for determining the total alkalinity of boiler water, satisfactory result can be reached.