期刊
ELECTROCHIMICA ACTA
卷 167, 期 -, 页码 187-193出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.electacta.2015.03.139
关键词
Ion-selective electrodes; upper detection limit; tuned galvanostatic polarization; cadmium ion
资金
- Russian Foundation for Basic Research [15-03-04514]
Galvanostatic polarization with a tuned anodic current density is successfully applied for the improvement of the upper detection limit (UDL) of a Cd2+-selective electrode with PVC membrane containing neutral ionophore N,N,N',N'-tetradodecyl-3,6-dioxaoctanedithioamide (ETH 5435). The UDL of the anodically polarized electrode is 1.0 M CdCl2 whereas the traditional zero-current UDL is 0.05 M. The polarization regularities obey the Ohm's law, and this makes the basis for the algorithm of the optimization of the polarizing current density for a given Cd2+ concentration and for the analytical application of the electrode. (C) 2015 Elsevier Ltd. All rights reserved.
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