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Iron speciation in natural waters by sequential injection analysis with a hexadentate 3-hydroxy-4-pyridinone chelator as chromogenic agent

2016Journal article Open access
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dc.contributor.authorMiranda, Joana
dc.contributor.authorMesquita, Raquel
dc.contributor.authorAna, Nunes
dc.contributor.authorRangel, Maria
dc.contributor.authorRangel, António O. S. S.
dc.date.accessioned2016-01-05T11:56:47Z
dc.date.available2016-01-05T11:56:47Z
dc.date.issued2016
dc.description.abstractA sequential injection method for iron speciation in various types of natural waters was developed using a synthesised hexadentate 3-hydroxy-4-pyridinone chelator (CP256). The denticity of the ligand that allow formation of the corresponding iron (III) complex in a 1:1 stoichiometry proved to be highly advantageous, in comparison with parent bidentate, hydroxy-4-piridinone chelators, with a two fold increase of reaction sensitivity and over 65% decrease of the LOD. A solid phase extraction approach was employed to attain matrix elimination, facilitating iron (III) determination and application to high salinity waters. The combination with the total iron determination obtained by the direct reaction of the ligand resulted in iron speciation. Two detection spectrophotometric cells were tested, a conventional flow cell (CFC) and a liquid waveguide capillary cell (LWCC). The dynamic concentration ranges were 0.1–2 mg/L with the CFC detection and 0.005–0.1mg/L with the LWCC, with limit of detection of 30 mg/L and 6 mg/L, respectively. The developed method was successfully applied to a variety of natural waters.pt_PT
dc.description.versioninfo:eu-repo/semantics/acceptedVersion
dc.identifier.citationMIRANDA, J. L. A.; MESQUITA, Raquel B.R.; NUNES, A.; RANGEL, Maria RANGEL, Antonio O.S.S. - Iron speciation in natural waters by sequential injection analysis with a hexadentate 3-hydroxy-4-pyridinone chelator as chromogenic agent. Talanta. ISSN: 0039-9140. (2016) 48, 633-640pt_PT
dc.identifier.doi10.1016/j.talanta.2015.05.062pt_PT
dc.identifier.eid84949093095
dc.identifier.pmid26653494
dc.identifier.urihttp://hdl.handle.net/10400.14/18826
dc.identifier.wos000366786400079
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationPTDC/AAG-MAA/3978/ 2012_BI_2pt_PT
dc.relationPTDC/AAG-MAA/3978/2012_BI_2pt_PT
dc.relationPEst-OE/EQB/LA006/2013pt_PT
dc.subjectHexadentate 3,4-hydroxypiridinone ligandpt_PT
dc.subjectIron speciationpt_PT
dc.subjectSolid phase extractionpt_PT
dc.subjectFresh and saline water samplespt_PT
dc.titleIron speciation in natural waters by sequential injection analysis with a hexadentate 3-hydroxy-4-pyridinone chelator as chromogenic agentpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FAAG-MAA%2F3978%2F2012/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PEst-OE%2FEQB%2FLA0016%2F2013/PT
oaire.citation.endPage640
oaire.citation.startPage633
oaire.citation.titleTalanta
oaire.citation.volume148
oaire.fundingStream3599-PPCDT
oaire.fundingStream3599-PPCDT
person.familyNameMiranda
person.familyNameMesquita
person.familyNameNUNES
person.familyNameRangel
person.familyNameSantos Silva Rangel
person.givenNameJoana
person.givenNameRaquel
person.givenNameANA
person.givenNameMaria
person.givenNameAntónio Osmaro
person.identifierJ-4630-2013
person.identifierR-000-ARW
person.identifier.ciencia-id8419-C0EE-95BB
person.identifier.ciencia-idEB1D-DEE3-0B60
person.identifier.ciencia-id2E18-5B36-29C0
person.identifier.ciencia-idD61D-7CFB-178A
person.identifier.orcid0000-0001-9650-303X
person.identifier.orcid0000-0001-7745-1860
person.identifier.orcid0000-0002-3296-0183
person.identifier.orcid0000-0002-0998-1437
person.identifier.orcid0000-0002-6486-8947
person.identifier.ridF-6498-2015
person.identifier.ridJ-4630-2013
person.identifier.ridB-3732-2012
person.identifier.scopus-author-id56675327200
person.identifier.scopus-author-id7005556626
person.identifier.scopus-author-id55963098900
person.identifier.scopus-author-id7004827387
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.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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relation.isProjectOfPublication24fed6ad-5325-4893-8909-10f57a59335b
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