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Towards a solid state reference electrode
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DOI：10.1016/S0925-4005(97)00146-9.png)
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摘要
En 中文
The construction of a solid state reference electrode is presented. The solid state reference electrode has two membranes arranged in parallel. The membranes are anion and cation conducting, and both of them are in contact with the sample solution. Resistors with considerably larger resistance than that of the ion-exchange membranes are soldered onto each of the two electrode parts, to give the same amount of charge transferred in the parallel paths. The anion and cation conducting paths of the electrode then give contributions to the e.m.f. that cancel, and we show that the cell e.m.f. varies with the concentration of the ion reversible to the ion selective electrode (ISE) in a Nernstian way. As an example of the ISE we have studied a fluoride selective electrode. We have also tested materials for the anion and cation conducting parts of the reference electrode, and found that they behave close to what is predicted. The performance of the total reference electrode can be compared to a commercially available electrode. Procedures for further progress in the realization of the ideal reference electrode are discussed on the background of our theoretical development. (C) 1997 Published by Elsevier Science S.A.
Keyword:
anion conducting membrane
cation conducting membrane
fluoride selective electrode
solid state reference electrode
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7.7
论文数:
3.4W
被引数:
12.6W
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