Self-Assembled Monolayers in Electroanalytical Chemistry: Application of ω-Mercaptocarboxylic Acid Monolayers for Electrochemical Determination of Ultralow Levels of Cadmium(II)

Iva Turyan; Daniel Mandler

doi:10.1021/ac00073a012

Self-Assembled Monolayers in Electroanalytical Chemistry: Application of ω-Mercaptocarboxylic Acid Monolayers for Electrochemical Determination of Ultralow Levels of Cadmium(II)

Iva Turyan
, Daniel Mandler^*

^*Corresponding author for this work

Institute of Chemistry

Research output: Contribution to journal › Article › peer-review

161 Scopus citations

Abstract

Self-assembled monolayers of ω-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 ω-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 × 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.

Original language	English
Pages (from-to)	58-63
Number of pages	6
Journal	Analytical Chemistry
Volume	66
Issue number	1
DOIs	https://doi.org/10.1021/ac00073a012
State	Published - 1 Jan 1994

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title = "Self-Assembled Monolayers in Electroanalytical Chemistry: Application of ω-Mercaptocarboxylic Acid Monolayers for Electrochemical Determination of Ultralow Levels of Cadmium(II)",

abstract = "Self-assembled monolayers of ω-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 ω-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 × 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.",

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AU - Mandler, Daniel

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N2 - Self-assembled monolayers of ω-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 ω-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 × 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.

AB - Self-assembled monolayers of ω-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 ω-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 × 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.

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Self-Assembled Monolayers in Electroanalytical Chemistry: Application of ω-Mercaptocarboxylic Acid Monolayers for Electrochemical Determination of Ultralow Levels of Cadmium(II)

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