期刊
MARINE POLLUTION BULLETIN
卷 92, 期 1-2, 页码 259-268出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.marpolbul.2014.11.028
关键词
Transition metals; n-alkanes; Terpanes; Isotopes; Estuary
资金
- Agencia Nacional do Petroleo - Brazil (ANP)
- Coordenacao de Aperfeicoamento de Pessoal de Nivel Superior - Brazil (CAPES)
Although the Passagem Channel estuary, Espirito Santo State, Brazil, is located in an urbanized and industrialized region, it has a large mangrove system. Here we examined natural and anthropogenic inputs that may influence trace metal (Cd, Cr, Cu, Ni, Sc, Pb and Zn) and hydrocarbon (n-alkane and terpane) deposition in three sediment cores collected in the tidal flat zone of the estuary. The cores were also analyzed for carbonate, grain size and stable isotopic composition (delta C-13(org). and delta N-15(total)). Metal enrichment and its association to petroleum hydrocarbons in the surficial sediments of one of the cores, indicate crude oil and derivative inputs, possibly from small vessels and road run-off from local heavy automobile traffic. At the landward sites, the major contributions for metals and hydrocarbons are from natural sources, but in one case, Cu may have been enriched by domestic effluent inputs. (c) 2014 Elsevier Ltd. All rights reserved.
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