geac_a_914186_sm7609.docx (312.14 kB)
Modification of gold electrode by self-assembled 2-mercapto benzothiazole for the determination of Hg2+
Version 3 2014-08-18, 12:33
Version 2 2014-08-18, 12:33
Version 1 2014-08-09, 00:00
journal contribution
posted on 2014-08-18, 12:33 authored by Srikant Sahoo, Ashis Kumar Satpati, Annareddy Venkata Ramana ReddyAn electrochemical method was developed for the determination of mercury using polycrystalline gold electrode modified by self-assembled monolayers (SAMs) of 2-mercaptobenzothiazole (MBTH). Morphological and electrochemical characterisation of the self-assembled structure of MBTH was performed using atomic force microscopy (AFM) and electrochemical impedance spectroscopy (EIS) measurements. The monolayer of MBTH has shown high affinity for Hg2+. The limit of detection for the determination of Hg2+ using the MBTH SAMs modified gold electrode was obtained as 0.421 μg L−1. The pre-concentration of Hg2+ at open circuit potential is beneficial for the onsite monitoring of mercury concentration in water samples.