Response Amplification of an Ion-Selective Electrode
作者:
Koji Suzuki,
Koji Tohda,
Tsuneo Shirai,
期刊:
Analytical Letters
(Taylor Available online 1987)
卷期:
Volume 20,
issue 11
页码: 1773-1779
ISSN:0003-2719
年代: 1987
DOI:10.1080/00032718708082594
出版商: Taylor & Francis Group
关键词: Amplification;ion-selective electrode;response;valinomycin electrode
数据来源: Taylor
摘要:
The response of an ion-selective electrode can be amplified by connecting the cell, which is composed of an ion-selective electrode and a reference electrode, in series. For a cell using 1, 2 or 3 valinomycin electrodes connected in series, the response slopes to 1 × 10−5−1 × 10−1M K+were 58, 116 and 174 mV/activity decade (a.d.) at 25°C, respectively. This amplification method would especially be useful for accurate determinations with electrodes in the range of low concentrations outside the Nernstian response or for determinations of polyvalent ions, in which both cases exhibit small emf response changes in changing the ion concentration.
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