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Título : Polycyclic aromatic hydrocarbons in soils from European high mountain areas
Autor : Quiroz, Roberto, Grimalt, Joan O., Fernández, Pilar, Camarero, Lluís, Catalán, Jordi, Stuchlík, Evzen, Thies, Hansjörg, Nickus, Ulrike
Palabras clave : Polycyclic aromatic hydrocarbons
Altitudinal dependences
High mountains
Long-range atmospheric transport of polycyclic aromatic hydrocarbons
Fecha de publicación : 2011
Editor: Springer
Resumen: Polycyclic aromatic hydrocarbons (PAHs) were analyzed in 70 soils distributed in mountain areas such as Montseny (300–1,700 m), Pyrenees (1,500– 2,900 m), Alps (1,100–2,500 m), and Tatras (1,400– 1,960 m). Average total PAH concentrations, excluding retene and perylene, were about 400 ng/g in the Pyrenees and 1,300–1,600 ng/g in the other mountain ranges. No correlations between PAH concentrations and total organic carbon were observed. Retene was the major PAH in the Pyrenean soils of lower altitude. No altitudinal dependence was found between soil PAH concentrations and elevation for the whole dataset. However, in the Tatra soils a statistically significant correlation with altitude was observed involving higher concentrations at higher altitude. This correlation was due to the statistically significant altitudinal dependence of the more volatile PAHs. Another observed altitudinal trend concerned the benz[a]anthracene/(benz[a]anthracene + chrysene + triphenylene) and the benzo[a] pyrene/(benzo[a]pyrene + benzo[e]pyrene) ratios that exhibited a decrease in the more chemically labile compounds, benz[a]anthracene and benzo[a]pyrene, respectively, in the soils located at higher altitude. This observation is consistent with the expected higher photooxidation at higher mountain altitude.
Descripción : 12 páginas, 5 figuras, 2 tablas.
Versión del editor:
ISSN: 0049-6979
Citación : Water Air Soil Pollut 215(1-4) : 655-666 (2011)
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