电位滴定法联合检测工业循环水pH、碱度的研究

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中图分类号： TQ085+.1 文献标识码：B 文章编号：1003-0514（2025）06-0054-04

Research on the simultaneous determination of pH and alkalinity in industrial circulatingwaterbypotentiometrictitration

Lu Xiuyan，Yu Chunbo，Zhang Litao，Du Shiyi，LiChan，Dong Mingming，Hou Jinliang （Beijing Shougang Co.，Ltd.，Qian O644O4，Hebei，China）

Abstract：This studyaimed todevelopa method forthesimultaneous determinationof pH，phenolphthalein alkalinityand totalalkalinityinindustrialcirculatingwaterusingaMetrohmfullyautomaticpotentiometrictitrator.Bycalibrating the combinedpHelectrode，establishing theanalyticalprotocolandoptimizing experimentalparameters，theoptimalconditions were defined.The accuracyand precisionof the method were verified through instrumentaland chemicalcomparisons.The proposedapproachenablesrapiddeterminationofpH，phenolphthaleinalkalinityandtotal alkalinityinwatersamples.

Keywords：pH；alkalinity；potentiometric titration；combined determination

1前言

在工业循环水及各类水质分析领域，pH和碱度作为关键参数，其精准检测对水处理工艺优化、设备安全运行至关重要。（剩余2764字）