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Microsequential injection lab-on-valve system for the spectrophotometric bi-parametric determination of iron and copper in natural waters

2017Journal article Restricted access
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dc.contributor.authorGonzález, Alba
dc.contributor.authorMesquita, Raquel B. R.
dc.contributor.authorAvivar, Jessica
dc.contributor.authorMoniz, Tânia
dc.contributor.authorRangel, Maria
dc.contributor.authorCerdà, Víctor
dc.contributor.authorRangel, António O. S. S.
dc.date.accessioned2017-07-31T15:04:15Z
dc.date.available2017-07-31T15:04:15Z
dc.date.issued2017
dc.description.abstractThe determination of iron and copper exploiting a microsequential injection lab-on-valve system with online spectrophotometric detection is described. A new, environmental friendly 3-hydroxy-4-pyridinone chelator, functionalized with a polyethylene glycol chain (MRB12) to improve water solubility, was used for iron determination. For copper determination, 1-(2-pyridylazo)-2-naphthol (PAN) was used. Different parameters affecting the formation of the complexes were studied, namely sample volume, reagent concentration, and buffer composition and concentration. The optimized conditions, 150 mu L of sample volume and 250 mg L-1 of MRB12 for iron determination, and 200 mu L of sample and 120 mg L-1 of PAN for copper determination, enabled an LOD of 15 and 18 mu g L-1 for iron and copper, respectively. The robustness of the developed procedure was assessed by the calculation of the relative standard deviation (RSD), 5% for iron determination and 2% for copper determination. The accuracy of the method was assessed comparing the results with two certified samples (RD < 7.5%) and calculating recovery percentages with five river water samples (average < 107%).pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationGonzález, A., Mesquita, Raquel B.R., Avivar, J., Moniz, T., Rangel, Maria, Cerdà, V. & Rangel, António O.S.S. (2017). Microsequential injection lab-on-valve system for the spectrophotometric bi-parametric determination of iron and copper in natural waters. Talanta, 167, 703-708. doi: 10.1016/j.talanta.2017.02.055pt_PT
dc.identifier.doi10.1016/j.talanta.2017.02.055pt_PT
dc.identifier.eid85014196718
dc.identifier.eissn1873-3573
dc.identifier.issn0039-9140
dc.identifier.pmid28340782
dc.identifier.urihttp://hdl.handle.net/10400.14/22692
dc.identifier.wos000399511600089
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationNORTE-01-0145-FEDER-000024pt_PT
dc.relationSWIM - Soil water interface monitoring: development of automatic analysis tools
dc.relationPOCI/01/0145/FERDER/007728pt_PT
dc.relationCTQ2016-77155-Rpt_PT
dc.relationD1-15-07998
dc.subjectBi-parametric determinationpt_PT
dc.subjectPEGylated 3-hydroxy-4-pyridinonept_PT
dc.subject1-(2-pyridylazo)-2-naphtholpt_PT
dc.subjectWater analysispt_PT
dc.subjectIron and copperpt_PT
dc.titleMicrosequential injection lab-on-valve system for the spectrophotometric bi-parametric determination of iron and copper in natural waterspt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleSWIM - Soil water interface monitoring: development of automatic analysis tools
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/3599-PPCDT/PTDC%2FAAG-MAA%2F5887%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F50016%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FMulti%2F04378%2F2013/PT
oaire.citation.endPage708pt_PT
oaire.citation.issue167pt_PT
oaire.citation.startPage703pt_PT
oaire.citation.titleTalantapt_PT
oaire.fundingStream3599-PPCDT
oaire.fundingStream5876
oaire.fundingStream5876
person.familyNameMesquita
person.familyNameMoniz
person.familyNameRangel
person.familyNameCerdà
person.familyNameSantos Silva Rangel
person.givenNameRaquel
person.givenNameTânia
person.givenNameMaria
person.givenNameVíctor
person.givenNameAntónio Osmaro
person.identifierJ-4630-2013
person.identifierR-000-ARW
person.identifier.ciencia-idEB1D-DEE3-0B60
person.identifier.ciencia-id1216-BBF2-7DE2
person.identifier.ciencia-id2E18-5B36-29C0
person.identifier.ciencia-idD61D-7CFB-178A
person.identifier.orcid0000-0001-7745-1860
person.identifier.orcid0000-0002-3175-3844
person.identifier.orcid0000-0002-0998-1437
person.identifier.orcid0000-0001-7474-9426
person.identifier.orcid0000-0002-6486-8947
person.identifier.ridJ-4630-2013
person.identifier.ridL-4970-2014
person.identifier.ridB-3732-2012
person.identifier.scopus-author-id7005556626
person.identifier.scopus-author-id54794343600
person.identifier.scopus-author-id55963098900
person.identifier.scopus-author-id7005344678
person.identifier.scopus-author-id7004827387
project.funder.identifierhttp://doi.org/10.13039/501100001871
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
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsrestrictedAccesspt_PT
rcaap.typearticlept_PT
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