Please use this identifier to cite or link to this item: http://ir.swu.ac.th/jspui/handle/123456789/13867
Full metadata record
DC FieldValueLanguage
dc.contributor.authorChaiyo S.
dc.contributor.authorChailapakul O.
dc.contributor.authorSiangproh W.
dc.date.accessioned2021-04-05T03:32:32Z-
dc.date.available2021-04-05T03:32:32Z-
dc.date.issued2014
dc.identifier.issn32670
dc.identifier.other2-s2.0-84912088240
dc.identifier.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-84912088240&doi=10.1016%2fj.aca.2014.09.011&partnerID=40&md5=4f64c54766aa79727925a3cac8c00f61
dc.identifier.urihttp://ir.swu.ac.th/jspui/handle/123456789/13867-
dc.description.abstractA highly sensitive determination of mercury in the presence of Cu(II) using a boron-doped diamond (BDD) thin film electrode coupled with sequential injection-anodic stripping voltammetry (SI-ASV) was proposed. The Cu(II) was simultaneously deposited with Hg(II) in a 0.5M HCl supporting electrolyte by electrodeposition. In presence of an excess of Cu(II), the sensitivity for the determination of Hg(II) was remarkably enhanced. Cu(II) and Hg(II) were on-line deposited onto the BDD electrode surface at -1.0V (vs. Ag/AgCl, 3M KCl) for 150s with a flow rate of 14μLs-1. An anodic stripping voltammogram was recorded from -0.4V to 0.25V using a frequency of 60Hz, an amplitude of 50mV, and a step potential of 10mV at a stopped flow. Under the optimal conditions, well-defined peaks of Cu(II) and Hg(II) were found at -0.25V and +0.05V (vs. Ag/AgCl, 3M KCl), respectively. The detection of Hg(II) showed two linear dynamic ranges (0.1-30.0ngmL-1 and 5.0-60.0ngmL-1). The limit of detection (S/N=3) obtained from the experiment was found to be 0.04ngmL-1. The precision values for 10 replicate determinations were 1.1, 2.1 and 2.9% RSD for 0.5, 10 and 20ngmL-1, respectively. The proposed method has been successfully applied for the determination of Hg(II) in seawater, salmon, squid, cockle and seaweed samples. A comparison between the proposed method and an inductively coupled plasma optical emission spectrometry (ICP-OES) standard method was performed on the samples, and the concentrations obtained via both methods were in agreement with the certified values of Hg(II), according to the paired t-test at a 95% confidence level. © 2014 Elsevier B.V.
dc.subjectDiamond films
dc.subjectDiamonds
dc.subjectElectrochemical electrodes
dc.subjectInductively coupled plasma
dc.subjectMercury (metal)
dc.subjectOptical emission spectroscopy
dc.subjectShellfish
dc.subjectSilver
dc.subjectSpectrometry
dc.subjectThin films
dc.subjectVoltammetry
dc.subjectAnodic stripping voltammetry
dc.subjectBoron-doped diamond thin film electrode
dc.subjectDetermination of mercuries
dc.subjectInductively coupled plasma-optical emission spectrometry
dc.subjectLinear dynamic ranges
dc.subjectSequential injection
dc.subjectSupporting electrolyte
dc.subjectThin-film electrode
dc.subjectCopper
dc.subjectcopper
dc.subjectdiamond
dc.subjectmercury
dc.subjectsea water
dc.subjectanodic stripping potentiometry
dc.subjectArticle
dc.subjectatomic emission spectrometry
dc.subjectcockle
dc.subjectconcentration (parameters)
dc.subjectcontrolled study
dc.subjectelectrode
dc.subjectlimit of detection
dc.subjectmeasurement precision
dc.subjectnonhuman
dc.subjectsalmon
dc.subjectseaweed
dc.subjectsequential injection anodic stripping voltammetry
dc.subjectsquid
dc.titleHighly sensitive determination of mercury using copper enhancer by diamond electrode coupled with sequential injection-anodic stripping voltammetry
dc.typeArticle
dc.rights.holderScopus
dc.identifier.bibliograpycitationAnalytica Chimica Acta. Vol 852, (2014), p.55-62
dc.identifier.doi10.1016/j.aca.2014.09.011
Appears in Collections:Scopus 1983-2021

Files in This Item:
There are no files associated with this item.


Items in SWU repository are protected by copyright, with all rights reserved, unless otherwise indicated.