Lipid biomarkers profile--presence of coprostanol: recent sediments from Rodrigo de Freitas Lagoon-Rio de Janeiro, Brazil.
J Environ Sci Health A Tox Hazard Subst Environ Eng
; 42(11): 1553-60, 2007 Sep.
Article
em En
| MEDLINE
| ID: mdl-17849296
Coprostanol (contribution characteristic from anthropogenic pollution) and other lipid biomarkers (sterols, fatty alcohols and fatty acids) were identified and quantified in recent sediment extracts from Rodrigo de Freitas Lagoon, a touristy spot of Rio de Janeiro-Brazil, using gas chromatography with mass selective detector (GC-MSD). The determination of lipid biomarkers profile indicates an autochthonous biogenic contribution due to the presence of phytoplankton, zooplankton, bacteria and dinoflagellates. The allochthonous biogenic contribution was confirmed by detection of biomarkers from higher plants in the sediments due to the influence of the Atlantic Forest inserted in the studied region. The concentration of the studied compounds varied from 5.53 to 216.47 microg.g(-1) for sterols, 0.47 to 5.35 microg.g(-1) for fatty alcohols, 20.15 to 66.22 microg.g(-1) for fatty acids and 0.08 to 3.98 microg.g(-1) for coprostanol. The presence of coprostanol was attributed to illegal untreated sewage discharge in the pluvial collector which ends up in the Lagoon.
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Coleções:
01-internacional
Base de dados:
MEDLINE
Assunto principal:
Poluentes Químicos da Água
/
Sedimentos Geológicos
/
Ácidos Graxos
/
Álcoois Graxos
Tipo de estudo:
Prognostic_studies
Limite:
Animals
País/Região como assunto:
America do sul
/
Brasil
Idioma:
En
Revista:
J Environ Sci Health A Tox Hazard Subst Environ Eng
Assunto da revista:
TOXICOLOGIA
Ano de publicação:
2007
Tipo de documento:
Article
País de afiliação:
Brasil
País de publicação:
Reino Unido