The Integrated Use Of Chemical And Biochemical
Markers For Assessing The Effects Of The Aegean
Sea Oil Spill In The Galicia Coast (NW Spain)
Author(s)
J. Albaiges, C. Porte, D. Pastor, X. Biosca & M. Sole
Abstract
The spatial distribution and temporal evolution of petrogenic and pyrolytic
hydrocarbons in the Galicia coast (NW Spain), following the Aegean Sea oil
spill, were investigated through a detailed study of hydrocarbon (fossil) markers
in surface sediments and bivalves (mussels and clams). Sublethal responses in
mussels were also assessed by the determination of several biomarkers such as
the cytochrome P450 system, antioxidant enzymes and lipid peroxidation.
Triterpane and sterane distributions were useful in tracing, respectively, the
oil source and weathering (degradation) along the survey period (3, 6, 9, 12 and
34 months after the accident). Within the aromatic fraction, aromatized steranes
were also us
Keywords
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