Química Nova | |
Enrichment, availability and contamination of trace metals (Cd, Cu, Pb and Zn) in sediments of urban lagoons in Concepción, Chile | |
Universidad de Concepción, Concepción, Chile1  Ahumada Bermúdez, Ramón1  Medina Pedreros, Valentina1  González Sepúlveda, Elizabeth1  Neira Hinojosa, José1  Universidad Católica de la Santísima Concepción, Concepción, Chile1  Retamal Cifuentes, María1  | |
关键词: availability; sediments; metals.; | |
DOI : 10.1590/S0100-40422009000400014 | |
学科分类:化学(综合) | |
来源: Sociedade Brasileira de Quimica | |
【 摘 要 】
Trace metals (Cd, Cu, Pb and Zn) enrichment, availability and contamination in superficial sediments of three interconnected urban lagoons localized in Concepción-Chile, were evaluated. According to the results of geochemical fracctionation analysis, Cu and Pb are rather associated with oxi-hydroxides, Cd is associated with exchangeable and carbonates fraction, while Zn is mainly associated with organic, oxi-hydroxides and residual fraction. The estimation of the availability percentages indicate that Cu is the most mobile metal and the less mobile is the Cd. An evaluation of the geo-accumulation index and urban industrial pollution allowed to classify the studied zone as moderately to highly contaminated.
【 授权许可】
Unknown
【 预 览 】
Files | Size | Format | View |
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RO201912050594499ZK.pdf | 347KB | download |