MERCURY(II) ACETATE NAFION MODIFIED ELECTRODE FOR ANODIC-STRIPPING VOLTAMMETRY OF LEAD AND COPPER WITH FLOW-INJECTION ANALYSIS

被引：22

作者：

DALANGIN, RR ^{[1
]}

GUNASINGHAM, H ^{[1
]}

机构：

[1] NATL UNIV SINGAPORE,DEPT CHEM,SINGAPORE 0511,SINGAPORE

来源：

ANALYTICA CHIMICA ACTA | 1994年 / 291卷 / 1-2期

关键词：

FLOW INJECTION; ANODIC STRIPPING VOLTAMMETRY; COPPER; LEAD; MERCURY(II) ACETATE NAFION MODIFIED ELECTRODE;

D O I：

10.1016/0003-2670(94)85129-8

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

A new method for the preparation of mercury film electrodes used in anodic stripping voltammetry is introduced. This method is simple, rapid and eliminates the need for a mercury plating step. In this alternative method, Hg2+ (as in mercury(II) acetate) is incorporated into a Nafion perfluorosulfonate formed on top of a glassy carbon electrode. When a negative potential is applied to the electrode, the Hg2+ is reduced to Hg-0 forming a three dimensional mercury film within a Nafion coating. The modified electrode is very stable in flowing solutions and has several advantages over a conventional preplated mercury film. The modified electrode was used to determine Pb2+(0.07-2.8 mu g ml(-1)) and CU2+ (0.5-2.3 mu g ml(-1)) in industrial effluents.

引用

页码：81 / 87

页数：7

共 23 条

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