A novel impedimetric sensor for trace level detection of dimethyl sulfide (DMS)

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dc.creatorHassan Iden
dc.creatorRicardo Adriano Dorledo de Faria
dc.creatorLuiz Guilherme Dias Heneine
dc.creatorTulio Matencio
dc.creatorYounès Messaddeq
dc.date.accessioned2023-08-10T12:49:56Z
dc.date.accessioned2025-09-08T23:07:02Z
dc.date.available2023-08-10T12:49:56Z
dc.date.issued2020
dc.description.sponsorshipOutra Agência
dc.identifier.doihttps://doi.org/10.1007/s10854-020-03588-0
dc.identifier.issn1573-482X
dc.identifier.urihttps://hdl.handle.net/1843/57679
dc.languageeng
dc.publisherUniversidade Federal de Minas Gerais
dc.relation.ispartofJournal of Materials Science: Materials in Electronics
dc.rightsAcesso Restrito
dc.subjectEletroquímica
dc.subjectDetectores
dc.subjectCompostos orgânicos voláteis
dc.subjectCompostos de enxofre
dc.subjectVoltametria
dc.subjectEletrodo de carbono
dc.subjectMicroscopia eletrônica de varredura
dc.subjectEspectroscopia de raio X
dc.subjectEspectroscopia de impedância
dc.subject.otherImpedimetric sensor
dc.subject.otherDimethyl sulfide
dc.subject.otherCyclic voltammetry
dc.subject.otherScanning electron microscopy
dc.subject.otherEnergy-dispersive X-ray spectroscopy
dc.subject.otherElectrochemical impedance spectroscopy
dc.titleA novel impedimetric sensor for trace level detection of dimethyl sulfide (DMS)
dc.typeArtigo de periódico
local.citation.epage10407
local.citation.issue13
local.citation.spage10398
local.citation.volume31
local.description.resumoAn easy and effective method for the preparation of a new impedimetric sensor used in the detection of dimethyl sulfide (DMS) at a nanomolar level is presented. The sensor was prepared in two steps from a commercially available screen-printed carbon electrode (SPCE): a simple activation of the SCPE using cyclic voltammetry followed by electroless plating of the working electrode surface with gold clusters. Scanning electron microscopy (SEM) and energy-dispersive X-ray spectroscopy (EDX) techniques confirmed the successful functionalization of the SPCE, revealing the presence of gold particles dispersed on the carbon matrix. Electrochemical impedance spectroscopy (EIS) was used to study the sensitivity of the sensor towards DMS dissolved in aqueous solution and simulated ocean water. Analyses were performed in less than 3 min, and the sensor showed linearity in a concentration range from 1.0 × 10−10 to 1.0 × 10−8 M with a limit of detection of 1.50 × 10−9 M and a limit of quantification of 2.27 × 10−9 M. To simulate the marine environment in which DMS is naturally present in nature, the impedance of the sensor was monitored by online EIS. Moreover, results indicated that, despite not linearly, the sensor is a promising tool to detect the analyte even at 1.0 × 10−11 M, presenting an increase of resistance of 13.5% in relation to its bare condition.
local.identifier.orcidhttps://orcid.org/0000-0002-7025-7042
local.identifier.orcidhttps://orcid.org/0000-0003-0707-2691
local.identifier.orcidhttps://orcid.org/0000-0002-5660-8125
local.identifier.orcidhttps://orcid.org/0000-0002-0868-2726
local.publisher.countryBrasil
local.publisher.departmentENG - DEPARTAMENTO DE ENGENHARIA QUÍMICA
local.publisher.departmentICX - DEPARTAMENTO DE QUÍMICA
local.publisher.initialsUFMG
local.url.externahttps://link.springer.com/article/10.1007/s10854-020-03588-0

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