PAH Content and Mutagenicity of Marine Sediments from the Venice Lagoon

Sediments from the Venice lagoon, a polluted coastal environment in northeastern Italy, were assayed for mutagenicity and content of several toxic microcontaminants, which included selected polycyclic aromatic hydrocarbons (PAHs); the latter are specifically dealt with in this paper. Samples were co...

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Bibliographic Details
Published in:Ecotoxicology and environmental safety 1996-04, Vol.33 (3), p.236-245
Main Authors: La Rocca, Cinzia, Conti, Luigi, Crebelli, Riccardo, Crochi, Barbara, Iacovella, Nicola, Rodriguez, Fabrizio, Turrio-Baldassarri, Luigi, di Domenico, Alessandro
Format: Article
Language:English
Subjects:
Brackish
Environmental Exposure
Geologic Sediments - chemistry
Isotope Labeling
Italy
Marine
Mutagenicity Tests
Mutagens - metabolism
Mutagens - toxicity
Polycyclic Aromatic Hydrocarbons - metabolism
Polycyclic Aromatic Hydrocarbons - toxicity
Reference Standards
Salmonella typhimurium
Salmonella typhimurium - drug effects
Salmonella typhimurium - genetics
Seawater
Soil Pollutants - metabolism
Soil Pollutants - toxicity
Spectrometry, Mass, Secondary Ion
Water Pollutants, Chemical - metabolism
Water Pollutants, Chemical - toxicity
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Summary:Sediments from the Venice lagoon, a polluted coastal environment in northeastern Italy, were assayed for mutagenicity and content of several toxic microcontaminants, which included selected polycyclic aromatic hydrocarbons (PAHs); the latter are specifically dealt with in this paper. Samples were collected at three lagoon sites with reasonably distinct environmental features—urban, industrial, or agricultural—and at two others considered to be under mixed pollution influences; a sixth sample was obtained from an open sea area to act as background control. The organic matter (EOM) associated with the mineral substrata was extracted; after cleanup, analyte determination was carried out by HRGC-LRMS(SIM) using isotopically labeled compounds as internal standards. Cumulative levels of the selected PAHs were found to be in the range of 0.065 to 0.46 μg/g of dry matrix at five sites; a much higher concentration (48 μg/g) was detected in the sample from the urban environment. The remarkable PAH level increase at this site was mostly accounted for by the concurrent, apparent increase of EOM contamination as PAH concentration was seen to reach 32 μg/mg of EOM from
ISSN:0147-6513
1090-2414
DOI:10.1006/eesa.1996.0030