Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/52539
DC FieldValueLanguage
dc.contributor.authorGonzález, Aridane G.en_US
dc.contributor.authorPérez-Almeida, Normaen_US
dc.contributor.authorMagdalena Santana-Casiano, J.en_US
dc.contributor.authorMillero, Frank J.en_US
dc.contributor.authorGonzález-Dávila, Melchoren_US
dc.date.accessioned2018-11-29T11:49:00Z-
dc.date.available2018-11-29T11:49:00Z-
dc.date.issued2016en_US
dc.identifier.issn0304-4203en_US
dc.identifier.urihttp://hdl.handle.net/10553/52539-
dc.description.abstractThe interaction between the redox chemistry of Fe and Cu at nanomolar has been studied in UV-treated seawater. The oxidation of Fe(II) was studied as a function of concentrations of Cu(II) and Cu(I) from 0 to 200 nM. The effect of added H2O2 (0-500 nM), pH (6.0-8.5) and NaHCO3 (2-9 mM) on the Fe(II) rate constants was studied at Cu(II) levels (0-200 nM). To understand the competition between Fe and Cu, the reduction of Cu(II) to Cu(I) was also studied as a function of oxygen (air-saturated and anoxic seawater), Fe(II) (0-200 nM) and H2O2 (0-300 nM). The Fe(II) oxidation was accelerated by the presence of Cu(II) and Cu(I). This acceleration has been explained by the redox coupling between Fe and Cu, competition for different inorganic species (hydroxyl and carbonate groups studied independently) and by the formation of Fe-Cu particles (cupric or cuprous ferrite). Superoxide played a key role in the oxidation rate of Fe(II) in the presence of Cu(II). The presence of Fe(II) caused a greater reduction of Cu(II) to Cu(I). This is directly related to the levels of oxygen, Fe(II) and H2O2 concentrations. The presence of Fe(II) produced a rapid formation of Cu(I) in the first 2-3 min of reaction. The Cu(I) is oxidized reaching a steady-state around 20 nM levels of Cu(I). These experimental results demonstrated that the presence of Fe and Cu strongly affected the inorganic redox chemistry of both metals in UV-treated seawater.en_US
dc.languageengen_US
dc.publisher0304-4203
dc.relation.ispartofMarine Chemistryen_US
dc.sourceMarine Chemistry[ISSN 0304-4203],v. 179, p. 12-22en_US
dc.subject251002 Oceanografía químicaen_US
dc.subject.otherCopperen_US
dc.subject.otherFe(II)en_US
dc.subject.otherOxidationen_US
dc.subject.otherSeawateren_US
dc.titleRedox interactions of Fe and Cu in seawateren_US
dc.typeinfo:eu-repo/semantics/Articlees
dc.typeArticlees
dc.identifier.doi10.1016/j.marchem.2016.01.004
dc.identifier.scopus84956628627
dc.identifier.isi000371840300002
dc.contributor.authorscopusid37031064100
dc.contributor.authorscopusid55583472100
dc.contributor.authorscopusid6701344294
dc.contributor.authorscopusid35459562600
dc.contributor.authorscopusid6603931257
dc.description.lastpage22-
dc.description.firstpage12-
dc.relation.volume179-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.contributor.daisngid1874718
dc.contributor.daisngid7460092
dc.contributor.daisngid579253
dc.contributor.daisngid18489
dc.contributor.daisngid518149
dc.contributor.wosstandardWOS:Gonzalez, AG
dc.contributor.wosstandardWOS:Perez-Almeida, N
dc.contributor.wosstandardWOS:Santana-Casiano, JM
dc.contributor.wosstandardWOS:Millero, FJ
dc.contributor.wosstandardWOS:Gonzalez-Davila, M
dc.date.coverdateFebrero 2016
dc.identifier.ulpgces
dc.description.sjr1,4
dc.description.jcr2,457
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
item.fulltextSin texto completo-
item.grantfulltextnone-
crisitem.author.deptGIR IOCAG: Química Marina-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Química-
crisitem.author.deptGIR IOCAG: Química Marina-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Química-
crisitem.author.deptGIR IOCAG: Química Marina-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Química-
crisitem.author.deptGIR IOCAG: Química Marina-
crisitem.author.deptIU de Oceanografía y Cambio Global-
crisitem.author.deptDepartamento de Química-
crisitem.author.orcid0000-0002-5637-8841-
crisitem.author.orcid0000-0002-9044-3758-
crisitem.author.orcid0000-0002-7930-7683-
crisitem.author.orcid0000-0003-3230-8985-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameGonzález González, Aridane-
crisitem.author.fullNamePérez Almeida, María Norma-
crisitem.author.fullNameSantana Casiano, Juana Magdalena-
crisitem.author.fullNameGonzález Dávila, Melchor-
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