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Nature, distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in the sediments of Olbia harbor (Northern Sardinia, Italy)

De Luca, Giuseppe and Furesi, Antonio and Micera, Giovanni and Panzanelli, Angelo and Piu, Paola Costantina and Pilo, Maria Itria and Spano, Nadia and Sanna, Gavino (2005) Nature, distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in the sediments of Olbia harbor (Northern Sardinia, Italy). Marine Pollution Bulletin, Vol. 50 (11), p. 1223-1232. ISSN 0025-326X. Article.

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DOI: 10.1016/j.marpolbul.2005.04.021

Abstract

The nature, origin and distribution of US EPA polycyclic aromatic hydrocarbons (PAHs) in the sediments of Olbia harbor (North Sardinia, Italy) were investigated by gas-chromatography/mass spectrometry (GCMS). PAH concentrations in the sediments (∑PAHs) ranged from 0.16 to 0.77 μg g−1, indicating a homogeneously low level of pollution. A rather exceptional prevalence of low molecular weight PAHs was substantiated: nearly 80% of ∑PAHs include naphthalene (15.19%) and phenanthrene (64.47%). Carcinogenic compounds were present in very low (BaP, BkF, BaA and DBA) or negligible (BbF and Inp) concentrations. As indicated by the Phen/Ant molar ratio, the main source of PAHs is petrogenic, probably due to oil spills from shipping. The low/high molecular weight ratio (ranging between 1.2 and 26) distinguishes the sediments of the tourist harbor from those of the commercial/industrial harbor. Moreover, a slight but meaningful pyrolytic contribution to pollution was found in the tourist harbor, which has the most polluted sediments in the whole harbor. Finally, good linear correlations were found between a selected PAH (Phen and Naph) and selected sums of PAHs (i.e. the total amount of the other 15 US EPA and the sum of low molecular weight PAHs).

Item Type:Article
ID Code:1404
Status:Published
Refereed:Yes
Uncontrolled Keywords:Sediments, polycyclic aromatic hydrocarbons, harbor, petrogenic, pyrolytic, Olbia harbor, Sardinia
Subjects:Area 03 - Scienze chimiche > CHIM/03 Chimica generale e inorganica
Area 03 - Scienze chimiche > CHIM/01 Chimica analitica
Divisions:002 Altri enti e centri di ricerca del Nord Sardegna > Azienda ASL1, Sassari > Presidio Multizonale di Prevenzione > Area Chimica
001 Università di Sassari > 01 Dipartimenti > Chimica
002 Altri enti e centri di ricerca del Nord Sardegna > INCA Consortium, Unità di Sassari, Sassari
Publisher:Pergamon / Elsevier
ISSN:0025-326X
Copyright Holders:© 2005 Elsevier
Deposited On:18 Aug 2009 10:05

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