Repository of Research and Investigative Information

Repository of Research and Investigative Information

Torbat Heydariyeh University of Medical Sciences

Electrocatalytic determination of Cd2+ and Pb2+ using an l-cysteine tungstophosphate self-Assembled monolayer on a polycrystalline gold electrode

(2019) Electrocatalytic determination of Cd2+ and Pb2+ using an l-cysteine tungstophosphate self-Assembled monolayer on a polycrystalline gold electrode. New Journal of Chemistry. pp. 14417-14425.

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Official URL: https://www.scopus.com/inward/record.uri?eid=2-s2....

Abstract

In this study, a novel sensitive surface based on an l-cysteine tungstophosphate-modified polycrystalline gold electrode (Au-(Cys)PW) was developed for the electrochemical detection of Cd2+ and Pb2+ in trace amounts. The electrocatalytic effect of this modified electrode toward Cd2+ and Pb2+ was evaluated by square wave voltammetry (SWV) as a sensitive method in the presence of the two analytes with bare and Au-(Cys)PW electrodes. The experimental conditions were optimized in order to evaluate the best analytical parameters of the sensor. A linear range of 0.01-0.2 μmol L-1 for both analytes and detection limits of 9.0 nmol L-1 and 4.0 nmol L-1 for Cd2+ and Pb2+, respectively, were determined based on a signal-To-noise ratio (S/N) equal to 3. Reproducibility and repeatability studies were also performed, and the Au-(Cys)PW electrode was employed for the determination of Cd2+ or Pb2+ in an industrial wastewater sample, which revealed the potential application of the modified electrode. © 2019 The Royal Society of Chemistry and the Centre National de la Recherche Scientifique.

Item Type: Article
Keywords: -
Page Range: pp. 14417-14425
Journal or Publication Title: New Journal of Chemistry
Journal Index: ISI, Scopus
Volume: 43
Number: 36
Identification Number: 10.1039/c9nj03459e
Depositing User: دکتر محبوبه عبداللهی
URI: http://eprints.thums.ac.ir/id/eprint/1625

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