Critical Impact of Chloride Containing Reference Electrodes on Electrochemical Measurements
Critical Impact of Chloride Containing Reference Electrodes on Electrochemical Measurements
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DOI：
10.1002/elan.201700379
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发表时间：
2017-12-01
期刊：
影响因子：
3
通讯作者：
Schneider, M.
中科院分区：
文献类型：
--
作者：
Laemmel, C.;Heubner, C.;Schneider, M.
含氯化物的参比电极，例如各种银-氯化银电极，在电化学分析中已得到广泛应用。通常较少注意潜在的氯离子污染对电化学测量的影响。在此，氯离子泄漏率的影响是通过有关铝的阳极氧化实验研究。根据结果，作者确定了临界泄漏率，这取决于典型的电解质体积和实验条件。结果表明，即使在超低泄漏率下，氯化物泄漏也会显著影响电化学测量。从实验结果和理论考虑推导出含氯参比电极的使用指南。
Chloride containing reference electrodes, such as various silver-silver chloride electrodes, are well established in electrochemical analyses. Usually less attention is paid to the influence of potential chloride contamination of electrochemical measurements. Herein, the impact of the chloride leakage rate is studied by means of experiments concerning the anodic oxidation of aluminum. Based on the results, the authors determine critical leakage rates, depending on typical electrolyte volumes and experimental conditions. The results demonstrate that chloride leakage can significantly influence electrochemical measurements, even at ultra-low leakage rates. A guideline for the usage of chloride containing reference electrodes is deduced from the experimental results and theoretical considerations.