Please use this identifier to cite or link to this item:
http://hdl.handle.net/10553/45426
DC Field | Value | Language |
---|---|---|
dc.contributor.author | González, A. G. | en_US |
dc.contributor.author | Santana-Casiano, J. M. | en_US |
dc.contributor.author | González-Dávila, M. | en_US |
dc.contributor.author | Pérez-Almeida, N. | en_US |
dc.contributor.author | Suárez De Tangil, M. | en_US |
dc.contributor.other | SANTANA CASIANO, JUANA MAGDALENA | - |
dc.contributor.other | GONZALEZ DAVILA, MELCHOR | - |
dc.contributor.other | Gonzalez, Aridane G. | - |
dc.date.accessioned | 2018-11-22T09:45:12Z | - |
dc.date.available | 2018-11-22T09:45:12Z | - |
dc.date.issued | 2014 | en_US |
dc.identifier.issn | 0013-936X | en_US |
dc.identifier.uri | http://hdl.handle.net/10553/45426 | - |
dc.description.abstract | The 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.language | eng | en_US |
dc.relation | Estudio Del Comportamiento Químico Del Hierro en El Medio Marino en Presencia de Compuestos Orgánicos de Origen Fitoplanctónico | en_US |
dc.relation.ispartof | Environmental science & technology | en_US |
dc.source | Environmental Science and Technology [ISSN 0013-936X], v. 48 (14), p. 7933-7941 | en_US |
dc.subject | 2510 Oceanografía | en_US |
dc.subject | 251002 Oceanografía química | en_US |
dc.subject.other | Dunaliella tertiolecta | en_US |
dc.subject.other | Oxidation | en_US |
dc.subject.other | Seawater | en_US |
dc.title | Effect of Dunaliella tertiolecta organic exudates on the Fe(II) oxidation kinetics in seawater | en_US |
dc.type | info:eu-repo/semantics/Article | es |
dc.type | Article | es |
dc.identifier.doi | 10.1021/es5013092 | |
dc.identifier.scopus | 84904438971 | - |
dc.identifier.isi | 000339227500033 | - |
dcterms.isPartOf | Environmental Science & Technology | - |
dcterms.source | Environmental Science & Technology[ISSN 0013-936X],v. 48 (14), p. 7933-7941 | - |
dc.contributor.authorscopusid | 37031064100 | - |
dc.contributor.authorscopusid | 6701344294 | - |
dc.contributor.authorscopusid | 6603931257 | - |
dc.contributor.authorscopusid | 55583472100 | - |
dc.contributor.authorscopusid | 36562653900 | - |
dc.description.lastpage | 7941 | - |
dc.identifier.issue | 14 | - |
dc.description.firstpage | 7933 | - |
dc.relation.volume | 48 | - |
dc.investigacion | Ciencias | en_US |
dc.type2 | Artículo | en_US |
dc.identifier.wos | WOS:000339227500033 | - |
dc.contributor.daisngid | 1874718 | - |
dc.contributor.daisngid | 579253 | - |
dc.contributor.daisngid | 518149 | - |
dc.contributor.daisngid | 7460092 | - |
dc.contributor.daisngid | 4732214 | - |
dc.identifier.investigatorRID | K-5058-2014 | - |
dc.identifier.investigatorRID | K-4958-2014 | - |
dc.identifier.investigatorRID | No ID | - |
dc.contributor.wosstandard | WOS:Gonzalez, AG | |
dc.contributor.wosstandard | WOS:Santana-Casiano, JM | |
dc.contributor.wosstandard | WOS:Gonzalez-Davila, M | |
dc.contributor.wosstandard | WOS:Perez-Almeida, N | |
dc.contributor.wosstandard | WOS:de Tangil, MS | |
dc.date.coverdate | Julio 2014 | |
dc.identifier.ulpgc | Sí | es |
dc.description.sjr | 2,777 | |
dc.description.jcr | 5,33 | |
dc.description.sjrq | Q1 | |
dc.description.jcrq | Q1 | |
dc.description.scie | SCIE | |
item.fulltext | Sin texto completo | - |
item.grantfulltext | none | - |
crisitem.project.principalinvestigator | Santana Casiano, Juana Magdalena | - |
crisitem.author.dept | GIR IOCAG: Química Marina | - |
crisitem.author.dept | IU de Oceanografía y Cambio Global | - |
crisitem.author.dept | Departamento de Química | - |
crisitem.author.dept | GIR IOCAG: Química Marina | - |
crisitem.author.dept | IU de Oceanografía y Cambio Global | - |
crisitem.author.dept | Departamento de Química | - |
crisitem.author.dept | GIR IOCAG: Química Marina | - |
crisitem.author.dept | IU de Oceanografía y Cambio Global | - |
crisitem.author.dept | Departamento de Química | - |
crisitem.author.dept | GIR IOCAG: Química Marina | - |
crisitem.author.dept | IU de Oceanografía y Cambio Global | - |
crisitem.author.dept | Departamento de Química | - |
crisitem.author.dept | GIR IOCAG: Química Marina | - |
crisitem.author.dept | IU de Oceanografía y Cambio Global | - |
crisitem.author.dept | Departamento de Química | - |
crisitem.author.orcid | 0000-0002-5637-8841 | - |
crisitem.author.orcid | 0000-0002-7930-7683 | - |
crisitem.author.orcid | 0000-0003-3230-8985 | - |
crisitem.author.orcid | 0000-0002-9044-3758 | - |
crisitem.author.orcid | 0000-0001-5190-8770 | - |
crisitem.author.parentorg | IU de Oceanografía y Cambio Global | - |
crisitem.author.parentorg | IU de Oceanografía y Cambio Global | - |
crisitem.author.parentorg | IU de Oceanografía y Cambio Global | - |
crisitem.author.parentorg | IU de Oceanografía y Cambio Global | - |
crisitem.author.parentorg | IU de Oceanografía y Cambio Global | - |
crisitem.author.fullName | González González, Aridane | - |
crisitem.author.fullName | Santana Casiano, Juana Magdalena | - |
crisitem.author.fullName | González Dávila, Melchor | - |
crisitem.author.fullName | Pérez Almeida, María Norma | - |
crisitem.author.fullName | Suárez De Tangil Navarro, Miguel Ángel | - |
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