期刊名称：The Open Environmental Pollution & Toxicology Journal
电子版ISSN：1876-3979
出版年度：2012
卷号：3
期号：1
页码：37-36
DOI：10.2174/1876397901203010037
出版社：Bentham open
摘要：
Polycyclic Aromatic Hydrocarbons (PAHs) were determined in sediments and bivalves by the Gas
chromatography coupled to Mass spectrometer (GC/MS). PAHs concentrations in sediments of My Bousselham and
Khnifiss, Atlantics lagoons, (expressed as ΣPAH) ranged from 31 to 82 ng/g of dry weight and from 6.6 to 34 ng/g of dry
weight, respectively. Concerning organisms, PAHs levels contamination ranged from 28 to 117 ng/g of dry weight for My
Bousselham (Ruditapes Decussates) and from 7 to 18.5 ng/g of dry weight for Khnifiss Lagoon Oyster (Crassostrea
gigas). In the Med Lag (Nador), the results obtained showed a range varying from 6 to 126 ng/g of dry weight for
sediments and from 24 to 32 ng/g of dry weight for organisms (Mytilus Galoprovincialis). The origin investigation of
PAHs in sediment revealed, that the process of combustion was the main source in these Lagoons, while the diagenetic
source, related to the high concentrations obtained of Perylene, was established only in both Atlantics Lagoons (Khnifiss
and My Bousselham).
A prevalence of high molecular weight PAHs was observed, with a considerable predominance of 4-ring PAHs in
sediments and organisms of the My bousselham and Nador lagoons, while, no clear predominance was observed in the
compartments studied in the Khnifiss lagoon.
Correlation study of individual PAH between sediments and organisms, showed that absorption by Clams of low
molecular weight PAH group, of which correlation was low, could be done through the water dissolved form, while the
absorption of heavier molecular weight PAHs, which showed a high correlation of their distribution between sediments
and Clams, could be the absorption from particulate matter.
