Fluoride electrode with LaF3-membrane and simple disjoining solid-state internal contact

被引：30

作者：

Bralic, M ^{[1
]}

Radic, N ^{[1
]}

Brinic, S ^{[1
]}

Generalic, E ^{[1
]}

机构：

[1] Univ Split, Fac Chem Technol, Dept Chem & Environm Chem, Split 21000, Croatia

来源：

TALANTA | 2001年 / 55卷 / 03期

关键词：

fluoride ion-selective electrode; membrane; solid state; impedance spectroscopy;

D O I：

10.1016/S0039-9140(01)00448-9

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Fluoride-selective electrode with LaF3-membrane and stainless steel internal contact has been prepared. The electrode has been tested in F- concentration range 10(-2)-10(-6) M and the results compared with those of commercial electrode and electrode with laboratory renewed internal electrolytic contact. The properties of simple disjoining solid-state contact have been investigated by means of electrochemical impedance spectroscopy (EIS). The impedance spectra show two time constants, which suggest that, at lower frequencies, proceed some Faradic reaction which probably stabilizes the potential between LaF3-membrane and stainless steel disk. (C) 2001 Elsevier Science B.V. All rights reserved.

引用

页码：581 / 586

页数：6

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