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Automated solid-phase spectrophotometric system for optosensing of bromate in drinking waters

2012Journal article Restricted access
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dc.contributor.authorOliveira, Sara M.
dc.contributor.authorOliveira, Hugo M.
dc.contributor.authorSegundo, Marcela A.
dc.contributor.authorRangel, António O. S. S.
dc.contributor.authorLima, José L. F. C.
dc.contributor.authorCerdà, Vıctor
dc.date.accessioned2013-01-28T13:38:20Z
dc.date.available2013-01-28T13:38:20Z
dc.date.issued2012
dc.description.abstractAn automated method based on an optosensor included in a multisyringe flow injection system was developed for the determination of bromate in waters for human consumption. The optosensor was based on the formation of a colored radical cation after oxidation of chlorpromazine by bromate and its selective uptake in a mixed-mode cation exchanger sorbent (Discovery DSC-MCAX), placed on a flow-through spectrophotometric cell. In-line regeneration was attained by methanol + 5% (v/v) ammonia, fostering the application of the same sorbent portion up to 180 determinations. Parameters affecting the reaction development and uptake of the colored compound were studied and optimized, while in-line addition of sulfite ($0.100 g L 1) prevented interference from hypochlorite. The proposed methodology allowed the determination of bromate up to 50.0 mg L 1, with 0.9 mg L 1 as the limit of detection, meeting the requirements of current EU and USA legislation. Application to real drinking water samples was successful, with a mean recovery of 100.2 2.8% for spiked levels of 5.0, 10.0 and 25.0 mg L 1. Repeatability was good (RSD < 3.6%, n ¼ 10) with a determination throughput of 8 h 1, fostering the application to on-line control of water disinfection processes.por
dc.description.versioninfo:eu-repo/semantics/publishedVersion
dc.identifier.citationOLIVEIRA, Sara M...[et al.] - Automated solid-phase spectrophotometric system for optosensing of bromate in drinking waters. Analytical Methods. ISSN 1759-9679. Vol. 4, n.º 5 (2012), p. 1229-1236por
dc.identifier.doi10.1039/c2ay05860j
dc.identifier.eissn1759-9679
dc.identifier.issn1759-9660
dc.identifier.urihttp://hdl.handle.net/10400.14/9989
dc.identifier.wosWOS:000303603000007
dc.language.isoengpor
dc.peerreviewedyespor
dc.publisherRoyal Society of Chemistrypor
dc.relationStrategic Project - LA 6 - 2011-2012
dc.titleAutomated solid-phase spectrophotometric system for optosensing of bromate in drinking waterspor
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleStrategic Project - LA 6 - 2011-2012
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6820 - DCRRNI ID/PEst-C%2FEQB%2FLA0006%2F2011/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBD%2F23782%2F2005/PT
oaire.citation.endPage1236
oaire.citation.issue5
oaire.citation.startPage1229
oaire.citation.startPage4
oaire.citation.titleAnalytical Methods
oaire.fundingStream6820 - DCRRNI ID
oaire.fundingStreamSFRH
person.familyNameOliveira
person.familyNameOliveira
person.familyNameSegundo
person.familyNameSantos Silva Rangel
person.familyNameLima
person.familyNameCerdà
person.givenNameSara
person.givenNameHugo M.
person.givenNameMarcela
person.givenNameAntónio Osmaro
person.givenNameJosé
person.givenNameVíctor
person.identifier353413
person.identifierR-000-8FJ
person.identifier.ciencia-id901F-2504-CC7A
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person.identifier.ciencia-idD61D-7CFB-178A
person.identifier.ciencia-id4811-9AA9-D673
person.identifier.orcid0000-0003-0649-2694
person.identifier.orcid0000-0002-9023-2563
person.identifier.orcid0000-0003-2938-0214
person.identifier.orcid0000-0002-6486-8947
person.identifier.orcid0000-0002-8906-9826
person.identifier.orcid0000-0001-7474-9426
person.identifier.ridM-5180-2013
person.identifier.ridG-1445-2010
person.identifier.ridA-1009-2010
person.identifier.scopus-author-id16022986400
person.identifier.scopus-author-id8433457900
person.identifier.scopus-author-id6602384941
person.identifier.scopus-author-id7004827387
person.identifier.scopus-author-id10141079100
person.identifier.scopus-author-id7005344678
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspor
rcaap.typearticlepor
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