Please use this identifier to cite or link to this item: http://hdl.handle.net/10553/45426
DC FieldValueLanguage
dc.contributor.authorGonzález, A. G.en_US
dc.contributor.authorSantana-Casiano, J. M.en_US
dc.contributor.authorGonzález-Dávila, M.en_US
dc.contributor.authorPérez-Almeida, N.en_US
dc.contributor.authorSuárez De Tangil, M.en_US
dc.contributor.otherSANTANA CASIANO, JUANA MAGDALENA-
dc.contributor.otherGONZALEZ DAVILA, MELCHOR-
dc.contributor.otherGonzalez, Aridane G.-
dc.date.accessioned2018-11-22T09:45:12Z-
dc.date.available2018-11-22T09:45:12Z-
dc.date.issued2014en_US
dc.identifier.issn0013-936Xen_US
dc.identifier.urihttp://hdl.handle.net/10553/45426-
dc.description.abstractThe role played by the natural organic ligands excreted by the green algae Dunaliella tertiolecta on the Fe(II) oxidation rate constants was studied at different stages of growth. The concentration of dissolved organic carbon increased from 2.1 to 7.1 mg L(-1) over time of culture. The oxidation kinetics of Fe(II) was studied at nanomolar levels and under different physicochemical conditions of pH (7.2-8.2), temperature (5-35 °C), salinity (10-37), and dissolved organic carbon produced by cells (2.1-7.1 mg L(-1)). The experimental rate always decreased in the presence of organic exudates with respect to that in the control seawater. The Fe(II) oxidation rate constant was also studied in the context of Marcus theory, where ΔG° was 39.31-51.48 kJ mol(-1). A kinetic modeling approach was applied for computing the equilibrium and rate constants for Fe(II) and exudates present in solution, the Fe(II) speciation, and the contribution of each Fe(II) species to the overall oxidation rate constant. The best fit model took into account two acidity equilibrium constants for the Fe(II) complexing ligands with pKa,1=9.45 and pKa,2=4.9. The Fe(II) complexing constants were KFe(II)-LH=3×10(10) and KFe(II)-L=10(7), and the corresponding computed oxidation rates were 68±2 and 36±8 M(-1) min(-1), respectively.en_US
dc.languageengen_US
dc.relationEstudio Del Comportamiento Químico Del Hierro en El Medio Marino en Presencia de Compuestos Orgánicos de Origen Fitoplanctónicoen_US
dc.relation.ispartofEnvironmental science & technologyen_US
dc.sourceEnvironmental Science and Technology [ISSN 0013-936X], v. 48 (14), p. 7933-7941en_US
dc.subject2510 Oceanografíaen_US
dc.subject251002 Oceanografía químicaen_US
dc.subject.otherDunaliella tertiolectaen_US
dc.subject.otherOxidationen_US
dc.subject.otherSeawateren_US
dc.titleEffect of Dunaliella tertiolecta organic exudates on the Fe(II) oxidation kinetics in seawateren_US
dc.typeinfo:eu-repo/semantics/Articlees
dc.typeArticlees
dc.identifier.doi10.1021/es5013092
dc.identifier.scopus84904438971-
dc.identifier.isi000339227500033-
dcterms.isPartOfEnvironmental Science & Technology-
dcterms.sourceEnvironmental Science & Technology[ISSN 0013-936X],v. 48 (14), p. 7933-7941-
dc.contributor.authorscopusid37031064100-
dc.contributor.authorscopusid6701344294-
dc.contributor.authorscopusid6603931257-
dc.contributor.authorscopusid55583472100-
dc.contributor.authorscopusid36562653900-
dc.description.lastpage7941-
dc.identifier.issue14-
dc.description.firstpage7933-
dc.relation.volume48-
dc.investigacionCienciasen_US
dc.type2Artículoen_US
dc.identifier.wosWOS:000339227500033-
dc.contributor.daisngid1874718-
dc.contributor.daisngid579253-
dc.contributor.daisngid518149-
dc.contributor.daisngid7460092-
dc.contributor.daisngid4732214-
dc.identifier.investigatorRIDK-5058-2014-
dc.identifier.investigatorRIDK-4958-2014-
dc.identifier.investigatorRIDNo ID-
dc.contributor.wosstandardWOS:Gonzalez, AG
dc.contributor.wosstandardWOS:Santana-Casiano, JM
dc.contributor.wosstandardWOS:Gonzalez-Davila, M
dc.contributor.wosstandardWOS:Perez-Almeida, N
dc.contributor.wosstandardWOS:de Tangil, MS
dc.date.coverdateJulio 2014
dc.identifier.ulpgces
dc.description.sjr2,777
dc.description.jcr5,33
dc.description.sjrqQ1
dc.description.jcrqQ1
dc.description.scieSCIE
item.fulltextSin texto completo-
item.grantfulltextnone-
crisitem.project.principalinvestigatorSantana Casiano, Juana Magdalena-
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.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.orcid0000-0002-7930-7683-
crisitem.author.orcid0000-0003-3230-8985-
crisitem.author.orcid0000-0002-9044-3758-
crisitem.author.orcid0000-0001-5190-8770-
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.parentorgIU de Oceanografía y Cambio Global-
crisitem.author.fullNameGonzález González, Aridane-
crisitem.author.fullNameSantana Casiano, Juana Magdalena-
crisitem.author.fullNameGonzález Dávila, Melchor-
crisitem.author.fullNamePérez Almeida, María Norma-
crisitem.author.fullNameSuárez De Tangil Navarro, Miguel Ángel-
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