IADO   05364
INSTITUTO ARGENTINO DE OCEANOGRAFIA
Unidad Ejecutora - UE
artículos
Título:
Presence, distribution and origins of Polycyclic Aromatic Hydrocarbons (PAHs) in sediments
Autor/es:
ANDRÉS H. ARIAS; ALFONSO V. BOTELLO; NORMA TOMBESI; GUADALUPE PONCE-VÉLEZ; HUGO FREIJE; JORGE MARCOVECCHIO
Revista:
ENVIRONMENTAL MONITORING AND ASSESSMENT
Editorial:
Springer
Referencias:
Lugar: Paises Bajos; Año: 2008
ISSN:
0167-6369
Resumen:
DOI: 10.1007/s10661-008-0696-5 This paper is the first comprehensive survey of  PAHs in coastal sediments in Bahia Blanca, Argentina, and provides useful information on their levels of concentration, composition  and sources of these pollutants. The total concentrations of PAHs ranged from 15 to 10260 ng.g-1. The highest contents (mean 3315 ng.g-1) of total PAHs in marine sediments were found in the inner channels of the estuary, while the lower ones (204 ng.g-1) belong to samples collected far away from contamination sources. The global average recorded in this study (1500 ng.g-1) indicates that the studied area lies within the referenced category of industrialized coastal zones under chronic pollution. The diagenetic PAH contribution was found to be negligible at all sampled locations, however, the calculation of molecular ratios determined an overimposition of pyrolitic PAHs over the petrogenic input. Further, the use of Principal Components Analysis (PCA) clearly separated ring group compounds and enabled the determination of pyrolitic/combustion PAHs dominancy.