General analytical solution for a reversible i-t response to a triple potential step at an SMDE in the absence/presence of amalgamation

被引：9

作者：

Molina, A ^{[1
]}

MartinezOrtiz, F ^{[1
]}

Serna, C ^{[1
]}

Camacho, L ^{[1
]}

Ruiz, JJ ^{[1
]}

机构：

[1] UNIV CORDOBA,DEPT QUIM FIS & TERMODINAM APLICADA,E-14004 CORDOBA,SPAIN

来源：

JOURNAL OF ELECTROANALYTICAL CHEMISTRY | 1996年 / 408卷 / 1-2期

关键词：

triple potential step chronoamperometry; amalgamation; SMDE;

D O I：

10.1016/0022-0728(96)04595-0

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

The theory corresponding to triple potential step chronoamperometry for a reversible charge transfer reaction in a static mercury drop electrode is presented. The equation for the current has been deduced assuming different diffusion coefficients for oxidized and reduced species and is valid when the reaction product is soluble in both the electrolytic solution and the electrode. The validity of equations proposed was verified by comparing theoretical i-t, double differential pulse and reverse differential pulse curves with those obtained experimentally for the system Cd2+/Cd(Hg). It can be concluded that the double differential pulse and reverse differential pulse techniques are more sensitive to the presence or absence of amalgamation than double pulse techniques.

引用

页码：33 / 45

页数：13

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