Electrochemical sensing systems for arsenate estimation by oxidation of L-cysteine

Ecotoxicology and Environmental Safety
Priyabrata SarkarAnthony P F Turner

Abstract

In this study, rapid electrochemical sensing systems for detection of arsenate by oxidation of L-cysteine are proposed. Three different sensing systems comprising of screen-printed electrode and standard electrodes were used for this study. The detector element i.e. L-cysteine was immobilized on the working electrodes of the transducers by in-situ polymerization of acylamide. The electrocatalytic oxidation of L-cysteine was performed by cyclic voltammentry and amperometry. All the systems presented linear response range up to 30 microgL(-1) of arsenic. The sensors were able to estimate arsenic below 10 microgL(-1) with a detection limit of 1.2-4.6 microgL(-1).

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Citations

Aug 13, 2013·Biosensors & Bioelectronics·A P DasS Swain
Mar 29, 2011·Analytical and Bioanalytical Chemistry·K de MoraC E French
Jan 15, 2015·Biosensors·Jian Chen, Barry P Rosen
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Oct 31, 2014·Metallomics : Integrated Biometal Science·Beibei ChenX Chris Le

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