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Título: | Copper and zinc retention by an organically amended soil |
Autor: | Díaz Barrientos, Encarnación CSIC; Madrid, Luis CSIC; Maqueda Porras, Celia CSIC; Morillo González, Esmeralda CSIC ORCID ; Ruiz-Cortés, Eduardo CSIC; Basallote, E.; Carrillo, M. | Fecha de publicación: | 2003 | Editor: | Pergamon Press | Citación: | Chemosphere 50(7): 911-917 (2003) | Resumen: | This paper describes changes in retention of Cu and Zn in laboratory experiments by a sandy soil that had been amended in the field with different composted wastes. The amounts of the metals retained increased as a result of the amendments, especially after two years. Desorption of the sorbed metals was always negligible, regardless of the treatment. The proportion of Cu retained was considerably higher than that of Zn, suggesting a higher affinity of the soil for the former. The greater sorption in the amended soils indicates a build-up of fresh sites for metal retention. The use of 'log(activity) vs. pH' plots showed that the nature of the surfaces retaining metals on the untreated and amended soils is different. At comparable pH values, the amended soils gave higher solution metal concentrations. Some of the possible environmental consequences of the use of these amendments for remediation purposes are discussed. | URI: | http://hdl.handle.net/10261/62128 | DOI: | 10.1016/S0045-6535(02)00695-1 | Identificadores: | doi: 10.1016/S0045-6535(02)00695-1 issn: 0045-6535 e-issn: 1879-1298 |
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accesoRestringido.pdf | 15,38 kB | Adobe PDF | Visualizar/Abrir |
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