Current Response of Ionophore-Based Ion-Selective Electrode Membranes at Controlled Potential
From electrochemical measurements at the interface of two immiscible electrolytes, the current at controlled potential is usually a linear function of the ion concentration in the aqueous phase. Surprisingly, a linear relationship between the current and the logarithm of the sample ion act...
| Main Authors: | , , , |
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| Format: | Article |
| Language: | deu |
| Published: |
Swiss Chemical Society
2003-10-01
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| Series: | CHIMIA |
| Subjects: | |
| Online Access: | https://chimia.ch/chimia/article/view/3759 |
| Summary: | From electrochemical measurements at the interface of two immiscible electrolytes, the current at controlled potential is usually a linear function of the ion concentration in the aqueous phase. Surprisingly, a linear relationship between the current and the logarithm of the
sample ion activity is found here for corresponding measurements on ion-selective electrode membranes. Here we document these new findings and give a theoretical explanation for the apparent contradiction between the results obtained with the two kinds of systems.
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| ISSN: | 0009-4293 2673-2424 |