Nature, distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in the sediments of Olbia harbor (Northern Sardinia, Italy)
Articolo
Data di Pubblicazione:
2005
Citazione:
Nature, distribution and origin of polycyclic aromatic hydrocarbons (PAHs) in the sediments of Olbia harbor (Northern Sardinia, Italy) / De Luca, G.; Furesi, A.; Micera, Giovanni; Panzanelli, Angelo; Piu, Paola Costantina; Pilo, Maria Itria; Spano, Nadia; Sanna, Gavino. - In: MARINE POLLUTION BULLETIN. - ISSN 0025-326X. - 50:11(2005), pp. 1223-1232. [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
(PPAHs) ranged from 0.16 to 0.77 lg g1, indicating a homogeneously low level of pollution. A rather exceptional prevalence of
low molecular weight PAHs was substantiated: nearly 80% of PPAHs 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).
(North Sardinia, Italy) were investigated by gas-chromatography/mass spectrometry (GCMS). PAH concentrations in the sediments
(PPAHs) ranged from 0.16 to 0.77 lg g1, indicating a homogeneously low level of pollution. A rather exceptional prevalence of
low molecular weight PAHs was substantiated: nearly 80% of PPAHs 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).
Tipologia CRIS:
1.1 Articolo in rivista
Keywords:
Sediments, Polycyclic aromatic hydrocarbons, Harbor, Petrogenic, Pyrolytic, Olbia harbor
Elenco autori:
De Luca, G.; Furesi, A.; Micera, Giovanni; Panzanelli, Angelo; Piu, Paola Costantina; Pilo, Maria Itria; Spano, Nadia; Sanna, Gavino
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