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›› 2006, Vol. 6 ›› Issue (1): 63-66.

• 过程与工艺 • 上一篇    下一篇

氯碱电解液氯离子浓度在线分析

冯殿义,孙彤   

  1. 辽宁工学院机械与自动化学院
  • 出版日期:2006-02-20 发布日期:2006-02-20

On-line Measurement of the Concentration of Chloric Ion in the Electrolytic Solution

FENG Dian-yi,SUN Tong   

  1. Department of Mechanism Engineering and Automation, Liaoning Institute of Technology
  • Online:2006-02-20 Published:2006-02-20

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摘要： 阶跃磁场下氯离子选择电极对溶液中氯离子响应的瞬时峰电位与浓度的对数曲线具有线性特性，Cl-浓度的线性范围为10-4~10-1 mol/L，与常规分析的平衡电位相近. 提出了阶跃磁场离子选择电极瞬时电位在线分析方法，该方法通过测量溶液在阶跃磁场下的瞬时峰电位，能够快速跟踪溶液离子浓度的瞬时行为，测量准确性和再现性优于常规分析法. 应用氯碱电解液在线实时分析Cl-浓度，测量误差小于6%.

关键词: 氯离子选择电极, 在线分析, 阶跃磁场, 瞬时电位

Abstract: The relationship of the peak voltage Ep which AgCl electrode responds to Cl- with logarithm of Cl- concentration is linear in the pulse magnetic field, and the relationship between Ep and lgc(Cl-) is linear in the range of 10-4~10-1 mol/L. The linear range is close to conventional potentiometry. On-line measurement of Cl- concentration with ion-selective electrode in the transient pulse magnetic field. The ion transient state can be traced by measuring Ep in pulse magnetic field. This method has the advantages over conventional potentiometry in reproducibility and accuracy. The concentration of chloric ion in the electrolytic solution has been measured by the method, and measurement error is less than 6%.

Key words: chloric ion-selective electrode, on-line analysis, pulse magnetic field, transient potentiometry