Journal
MARINE POLLUTION BULLETIN
Volume 42, Issue 1, Pages 36-44Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/S0025-326X(00)00092-8
Keywords
polycyclic aromatic hydrocarbons; marine sediment; distribution; sources; pollution; northern Adriatic Sea
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The composition, distribution and the sources of polycyclic aromatic hydrocarbons (PAHs) in the surficial sediments of the Gulf of Trieste were investigated, To document the spatial PAH input, surficial sediment samples from 17 locations throughout the Gulf were analysed. The total PAH load determined in the surficial sediment samples are between 30 and 600 ng g(-1), and were the highest in the immediate vicinity of the Port of Trieste, The PAH contents decline rapidly with increasing distance from the shore. The ratios of methylphenanthrenes/ phenanthrene and methylpyrene/pyrene are sensitive indicators of the origin of PAH pollution in the Gulf which is mostly pyrolitic. The phenanthrene/anthracene ratio mas used to determine the approximate location and distance from the source of PAH pollution, while 1-methyl-7-isopropylphenanthrene (retene) was used as indicator for forest fires, A sediment depth profile indicates a major increase in the PAH concentrations after the First World War. (C) 2001 Elsevier Science Ltd. All rights reserved.
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