Produção Nacional
Revisado por pares
Evaluation of metals and hydrocarbons in sediments from a tropical tidal flat estuary of Southern Brazil
2014; Elsevier BV; Volume: 92; Issue: 1-2 Linguagem: Inglês
10.1016/j.marpolbul.2014.11.028
ISSN1879-3363
AutoresEduardo S. Costa, Caroline Fiório Grilo, George A. Wolff, Anu Thompson, Rubens César Lopes Figueira, Renato Rodrigues Neto,
Tópico(s)Hydrocarbon exploration and reservoir analysis
ResumoAlthough the Passagem Channel estuary, Espírito 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 (δ13Corg. and δ15Ntotal). 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.
Referência(s)