期刊
ENVIRONMENTAL POLLUTION
卷 141, 期 2, 页码 336-342出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.envpol.2005.08.037
关键词
Puerto Rico; metals; estuary; sediments; Caribbean; pollution
Concentrations of As, Cd, Cu, Fe, Hg, Pb and Zn were evaluated in surface sediments of two estuaries from Puerto Rico, known as San Jose Lagoon (SJL) and Joyuda Lagoon. Significantly higher concentrations in mu g/g dw of Cd (1.8 vs. 0.1), Cu (105 vs. 22), Hg (1.9 vs. 0.17), Pb (219 vs. 8), and Zn (531 vs. 52) were found in sediment samples from SJL when compared to Joyuda Lagoon. Average concentrations of Hg, Pb, and Zn in some sediment samples from SJL were above the effect range median (ERM) that predict toxic effects to aquatic organisms. Enrichments factors using Fe as a normalizer, and correlation matrices showed that metal pollution in SJL was the product of anthropogenic sources, while the metal content in Joyuda Lagoon was of natural origins. Sediment metal concentrations found in SJL were comparable to aquatic systems classified as contaminated from other regions of the world. (c) 2005 Elsevier Ltd. All rights reserved.
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