Amperometric determination of sulfide based on its electrocatalytic oxidation at a pencil graphite electrode modified with quercetin

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dc.authoridGiray Dilgin, Didem/0000-0002-3487-3470
dc.authoridDilgin, Yusuf/0000-0002-2980-6871
dc.contributor.authorDilgin, Yusuf
dc.contributor.authorKizilkaya, Bayram
dc.contributor.authorErtek, Bensu
dc.contributor.authorErena, Nuri
dc.contributor.authorDilgin, Didem Giray
dc.date.accessioned2025-01-27T20:56:29Z
dc.date.available2025-01-27T20:56:29Z
dc.date.issued2012
dc.departmentÇanakkale Onsekiz Mart Üniversitesi
dc.description.abstractThis study describes a new approach for the investigation of electrocatalytic oxidation of sulfide using a pencil graphite electrode modified with quercetin (PGE/QH(2)). Adsorption procedure was used for the preparation of the modified electrodes. It was observed that PGE/QH(2) showed a significant electrocatalytic activity toward sulfide oxidation. Cyclic voltammetric studies show that the peak potential of sulfide shifts from +450 mV at bare PGE to +280 mV at PGE/QH(2). The electrocatalytic currents obtained from amperometric measurements at +300 mV vs. Ag/AgCl/KClsat and at pH 8.0 BR buffer solution containing 0.1 M NH4Cl were linearly related to the concentration of sulfide. The calibration graph consisted of two linear segments of 1-20 mu M and 20-800 mu M with a detection limit of 0.3 mu M (based on 3s(b)). The proposed method was successfully applied to the determination of sulfide in waste waters and was compared with the spectrophotometric method. (C) 2012 Elsevier B.V. All rights reserved.
dc.identifier.doi10.1016/j.talanta.2011.12.074
dc.identifier.endpage495
dc.identifier.issn0039-9140
dc.identifier.issn1873-3573
dc.identifier.pmid22284522
dc.identifier.scopus2-s2.0-84856316864
dc.identifier.scopusqualityQ1
dc.identifier.startpage490
dc.identifier.urihttps://doi.org/10.1016/j.talanta.2011.12.074
dc.identifier.urihttps://hdl.handle.net/20.500.12428/26415
dc.identifier.volume89
dc.identifier.wosWOS:000301278000071
dc.identifier.wosqualityQ1
dc.indekslendigikaynakWeb of Science
dc.indekslendigikaynakScopus
dc.indekslendigikaynakPubMed
dc.language.isoen
dc.publisherElsevier
dc.relation.ispartofTalanta
dc.relation.publicationcategoryinfo:eu-repo/semantics/openAccess
dc.rightsinfo:eu-repo/semantics/closedAccess
dc.snmzKA_WoS_20250125
dc.subjectElectrocatalytic oxidation
dc.subjectQuercetin
dc.subjectSulfide
dc.subjectPencil graphite electrode
dc.titleAmperometric determination of sulfide based on its electrocatalytic oxidation at a pencil graphite electrode modified with quercetin
dc.typeArticle

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