Repository logo
 
Publication

Evaluation of poly(sodium 4-styrenesulfonate) film coating in thin mercury film electrodes for lead determination

2009-03-15Journal article Restricted access
Simple item page
dc.contributor.authorSilva, C. P.
dc.contributor.authorCarapuça, H. M.
dc.contributor.authorRocha, L. S.
dc.contributor.authorPinheiro, J. P.
dc.date.accessioned2013-11-29T09:46:33Z
dc.date.available2013-11-29T09:46:33Z
dc.date.issued2009-03-15
dc.date.updated2013-11-26T16:24:46Z
dc.description.abstractIn this work, polyelectrolyte coatings assembled on glassy carbon/thin mercury film electrodes, as an adsorbed layer of poly(sodium 4-styrenesulfonate) (PSS), were studied. The goal was to search for the best conditions for the production of stable PSS-coated electrodes that could present high negative charge densities within the thin polymeric film, providing a fast and significant electrostatic cation accumulation. Square-wave anodic stripping voltammetry was applied to measure the amount of incorporated lead used as the reference cation. The influence of the composition of the PSS solution, the amount of deposited PSS, molecular weight and of the ionic strength of the electrolyte solution, on the features of the PSS coatings for ion-exchange voltammetry was studied. The PSS films morphology was assessed by SEM. The best PSS coating performance was found for the electrodes prepared from water solutions with a molecular weight of at least 70,000, and a mass loading of ca. 8 μg mm−2. In these conditions a three fold increase was observed in low ionic strength (0.0032 M) media. However, this improvement was not sufficient for the application of direct ion-exchange voltammetry, thus different strategies to obtain polymer films with higher charge densities have to be envisaged.por
dc.identifier.citationSilva, C.P.; Carapuça, H.M.; Rocha, L.S.; Pinheiro, J.P.Evaluation of poly(sodium 4-styrenesulfonate) film coating in thin mercury film electrodes for lead determination, Journal of Electroanalytical Chemistry, 626, 1-2, 192-196, 2009.por
dc.identifier.doihttp://dx.doi.org/doi:10.1016/j.jelechem.2008.11.001
dc.identifier.issn1572-6657
dc.identifier.otherAUT: JPI01020;
dc.identifier.urihttp://hdl.handle.net/10400.1/3166
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherElsevierpor
dc.relation.publisherversionhttp://www.sciencedirect.com/science/article/pii/S0022072808004385por
dc.subjectChemically modified electrodespor
dc.subjectPoly(sodium 4-styrenesulfonate)por
dc.subjectIon-exchange voltammetrypor
dc.subjectMercury film electrodespor
dc.subjectLead(II)por
dc.titleEvaluation of poly(sodium 4-styrenesulfonate) film coating in thin mercury film electrodes for lead determinationpor
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage196por
oaire.citation.startPage192por
oaire.citation.titleJournal of Electroanalytical Chemistrypor
oaire.citation.volume626por
person.familyNamePinheiro
person.givenNameJosé Paulo
person.identifier.orcid0000-0001-7925-9733
person.identifier.ridE-8402-2013
person.identifier.scopus-author-id35838299700
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
relation.isAuthorOfPublication5caedbac-d2b5-4a86-91a7-083bf83edda3
relation.isAuthorOfPublication.latestForDiscovery5caedbac-d2b5-4a86-91a7-083bf83edda3

Files

Original bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
n46_jec 626 (2009) 192 short comm.pdf
Size:
284.83 KB
Format:
Adobe Portable Document Format
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

FCT2-Artigos (em revistas ou actas indexadas)