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dc.contributor.authorRuiz Cánovas, Carlos 
dc.contributor.authorOlías Álvarez, Manuel 
dc.contributor.authorMiguel Sarmiento, Aguasanta 
dc.contributor.authorNieto Liñán, José Miguel 
dc.contributor.authorGalván González, Laura 
dc.date.accessioned2017-03-10T12:44:44Z
dc.date.available2017-03-10T12:44:44Z
dc.date.issued2012
dc.identifier.citationRuiz Cánovas, C., Olías Álvarez, M., Miguel Sarmiento, A., Nieto Liñán, J.M., Galván González, L.: "Pollutant transport processes in the Odiel River (SW Spain) during rain events". Water Resources Research. Vol. 48, n. 6, (2012). DOI: 10.1029/2011WR011041en_US
dc.identifier.issn0043-1397
dc.identifier.issn1944-7973 (electrónico)
dc.identifier.urihttp://hdl.handle.net/10272/13448
dc.description.abstractAn understanding of pollutant processes in rivers under different hydrological conditions is essential to assess its long-term evolution. This is especially relevant in Mediterranean rivers during rain events, when most of the water, suspended particulate matter (SPM), and pollutants are delivered. This study investigates the hydrochemical changes and pollutant fluxes in the Odiel River (SW Spain) during rainy conditions. For this purpose, high-resolution sampling (6 h) was performed to monitor dissolved and total concentrations of pollutants. During the rises in discharge, most dissolved elements had decreased concentrations due to the dilution effect of runoff waters and Fe precipitation processes. However, the particulate concentrations of some elements (As, Fe, Pb, Cr, Ti, V, and Ba) increased due to Fe-rich sediment remobilization, and to a lesser extent, direct precipitation. A two end-member mixing model applied to the collected data showed that the contribution of nonaffected waters was ∼85%–98% of the total discharge, highlighting the importance of mining lixiviates in the deterioration of Odiel water quality. An innovative methodology was applied to estimate dissolved and total pollutant loads, based on the relationships between dissolved concentrations and electrical conductivity (EC), and total concentrations and river flow. The importance of particulate metal transport during rain events in the Odiel River was significant. The total transport of Fe was 37 times higher than dissolved Fe, was almost 7 times higher for Pb, and 5 times higher for Cr, while As (1.1 t) was totally transported by particulate matter.en_US
dc.description.sponsorshipThis work has been financed by the Spanish Ministry of Education and Science through project CGL2010-21956-C02. CRC was financially supported by the Spanish Government with a research contract within the "Juan de la Cierva" program. The authors wish to thank the Environmental Council of the Andalusian Regional Government for the information provided for this study. We are grateful to John Selker, three anonymous reviewers and the associate editor Heidi Nepf for their insightful comments.en_US
dc.language.isoengen_US
dc.publisherAmerican Geophysical Unionen_US
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 España*
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/*
dc.titlePollutant transport processes in the Odiel River (SW Spain) during rain eventsen_US
dc.typeinfo:eu-repo/semantics/articleen_US
dc.identifier.doi10.1029/2011WR011041
dc.rights.accessRightsinfo:eu-repo/semantics/openAccessen_US
dc.relation.projectIDinfo:eu-repo/grantAgreement/Spanish Ministry of Education and Science [CGL2010-21956-C02]en_US


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