Artículos de revistas
Distribution, Sources, and Potential Ecotoxicological Risk of Polycyclic Aromatic Hydrocarbons in Surface Sediments from Bahía Blanca Estuary, Argentina
Fecha
2015-06Registro en:
Oliva, Ana Laura; Quintas, Pamela Yanina; la Colla, Noelia Soledad; Arias, Andres Hugo; Marcovecchio, Jorge Eduardo; Distribution, Sources, and Potential Ecotoxicological Risk of Polycyclic Aromatic Hydrocarbons in Surface Sediments from Bahía Blanca Estuary, Argentina; Springer; Archives of Environmental Contamination and Toxicology; 69; 2; 6-2015; 163-172
0090-4341
CONICET Digital
CONICET
Autor
Oliva, Ana Laura
Quintas, Pamela Yanina
la Colla, Noelia Soledad
Arias, Andres Hugo
Marcovecchio, Jorge Eduardo
Resumen
Thirty-four surface sediment samples were collected from Bahía Blanca Estuary, Argentina, to evaluate polycyclic aromatic hydrocarbon (PAH) contamination and ecotoxicity risk by applying sediment-quality guidelines (SQGs) and toxic equivalent factors (TEQ). Total concentrations of 17 parent PAHs, including the 16 United States Environmental Protection Agency priority PAHs, were measured using gas chromatography–mass spectrometry, and their levels ranged from 19.7 to 30,054.5 ng/g dry weight. The greatest values were found near the urban/industrial core and decreasing as the distance from that site increased. Molecular ratios determined mixed sources of PAHs with a slight imposition of pyrolitic over the petrogenic inputs. The ecotoxicological evaluation, based on the SQG model, showed that some of the individual PAHs were in excess of the effects range low (ERL) and the effects range median’s threshold; then, predicted occasional (ERL) and frequent adverse effects over the surrounding biota at the area of study were determined. Total PAH levels were expressed as benzo-a-pyrene TEQ and compared with literature data.