Journal
ELECTROCHEMISTRY COMMUNICATIONS
Volume 2, Issue 4, Pages 226-229Publisher
ELSEVIER SCIENCE INC
DOI: 10.1016/S1388-2481(00)00002-3
Keywords
2-mercaptobenzimidazole; self-assembled monolayer; mercury(II); anodic stripping voltammetry
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Monomolecular level modification of electrode surfaces through a self-assembly approach is, of late, gaining importance in view of its many functional applications in areas such as molecular electronics, molecular recognition, electron transfer studies and electroanalysis. Self-assembled monolayer (SAM) modification of a gold electrode with 2-mercaptobenzimidazole (MBI) has been achieved. On this modified electrode, anodic stripping voltammetric determination of mercury at ppm/sub-ppm level concentrations has been successfully attempted. Pre-concentration, prior to stripping, has been effected through a non-electrolytic process involving chemical interactions between MBI and Hg(II). The results an described and discussed with a plausible scheme. (C) 2000 Elsevier Science S.A. All rights reserved.
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