Electrochemical sensing systems for arsenate estimation by oxidation of L-cysteine
2010 (English)In: Ecotoxicology and Environmental Safety, ISSN 0147-6513, E-ISSN 1090-2414, Vol. 73, no 6, 1495-1501 p.Article in journal (Refereed) Published
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 mu g L-1 of arsenic. The sensors were able to estimate arsenic below 10 mu g L-1 with a detection limit of 1.2-4.6 mu g L-1. (C) 2010 Elsevier Inc. All rights reserved.
Place, publisher, year, edition, pages
Elsevier Science B.V., Amsterdam , 2010. Vol. 73, no 6, 1495-1501 p.
Arsenate; L-cysteine; Screen-printed electrode; Glassy carbon; Platinum electrode
National CategoryEngineering and Technology
IdentifiersURN: urn:nbn:se:liu:diva-65157DOI: 10.1016/j.ecoenv.2010.07.004ISI: 000281822200056OAI: oai:DiVA.org:liu-65157DiVA: diva2:395070