期刊名称：Journal of Environmental Chemistry and Ecotoxicology
电子版ISSN：2141-226X
出版年度：2013
卷号：5
期号：7
页码：190-195
DOI：10.5897/JECE2013.0281
语种：English
出版社：Academic Journals
摘要：This work deals with the determination of heavy metals (Pb, Cr, Zn and Cu) in the sediment of Santa Barbara Channel, located in Pelotas, RS. Absence of studies of the levels of heavy metals, in this channel, associated with high toxicity, bioconcentration and biomagnification capacity of these analytes makes this work necessary and explains the validity of this study. Two grams of fraction (< 63 μm) of 6 sampling points, in triplicate, suffered acid digestion (4 ml of aqua regia + 1 ml of Milli-Q water and 1 ml of HClO4). The concentration of analytes in the extracts was performed with an atomic absorption spectrophotometer. The analytes were detected in all the sites, but at low levels of concentration, Cu (3.3 to 42.6 mg kg-1), Pb (4.7 to 16.2 mg kg-1), Zn (5.2 to 40.4 mg kg-1) and Cr (2.5 to 21.4 mg kg-1), observing a close relationship with the organic matter content and the sediments with grain size finer.
关键词：Trace metal pollution; Santa Bárbara channel; sediments; Urban environments.
