SELF-ASSEMBLED MONOLAYERS IN ELECTROANALYTICAL CHEMISTRY - APPLICATION OF OMEGA-MERCAPTOCARBOXYLIC ACID MONOLAYERS FOR ELECTROCHEMICAL DETERMINATION OF ULTRALOW LEVELS OF CADMIUM(II)

被引：157

作者：

TURYAN, I ^{[1
]}

MANDLER, D ^{[1
]}

机构：

[1] HEBREW UNIV JERUSALEM,DEPT INORGAN & ANALYT CHEM,IL-91904 JERUSALEM,ISRAEL

来源：

ANALYTICAL CHEMISTRY | 1994年 / 66卷 / 01期

关键词：

D O I：

10.1021/ac00073a012

中图分类号：

O65 [分析化学];

学科分类号：

070302 ; 081704 ;

摘要：

Self-assembled monolayers of omega-mercaptocarboxylic acids, HS(CH2)nCO2H (n = 1, 2, 5, 10), on mercury film (MF) and gold electrodes have been used for the very sensitive and selective analysis of ultralow levels of cadmium(II). We find that shorter omega-mercaptocarboxylic acids provide superior sensitivity. Other parameters that govern the sensitivity and selectivity of this system have been examined in detail. Optimizing these factors resulted in a detection limit of 4 X 10(-12) M (0.45 ppt). The method has been verified by determining cadmium in standard solutions and it has been successfully applied to the analysis of cadmium in seawater.

引用

页码：58 / 63

页数：6

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