TY - JOUR
T1 - Self-Assembled Monolayers in Electroanalytical Chemistry
T2 - Application of ω-Mercaptocarboxylic Acid Monolayers for Electrochemical Determination of Ultralow Levels of Cadmium(II)
AU - Turyan, Iva
AU - Mandler, Daniel
PY - 1994/1/1
Y1 - 1994/1/1
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.
UR - http://www.scopus.com/inward/record.url?scp=0002615754&partnerID=8YFLogxK
U2 - 10.1021/ac00073a012
DO - 10.1021/ac00073a012
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AN - SCOPUS:0002615754
SN - 0003-2700
VL - 66
SP - 58
EP - 63
JO - Analytical Chemistry
JF - Analytical Chemistry
IS - 1
ER -