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Polycyclic aromatic hydrocarbons (pahs) in remote bulk and throughfall deposition: seasonal and spatial trends

Foan, Louise and Domerq, Maria and Bermejo, Raul and Santamaria, Jesus Miguel and Simon, Valérie Polycyclic aromatic hydrocarbons (pahs) in remote bulk and throughfall deposition: seasonal and spatial trends. (2012) Environmental Engineering and Management Journal, 11 (6). 1101-1110. ISSN 1843-3707

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Abstract

Polycyclic aromatic hydrocarbons (PAHs) were measured in atmospheric deposition in a Nature Reserve located in the North of Spain over a period of one year (June 2010 – May 2011). Total PAH deposition was evaluated monthly by combining samples collected over two-week periods, using 6 throughfall and 2 bulk precipitation collectors distributed over the study area. The latter consisted of glass funnels (with vertical sides) attached to Pyrex glass bottles. PAH determination was performed by liquid liquid extractions and analysis by high-performance liquid chromatography associated with fluorescence detection. Throughfall deposition revealed a loss under the canopy of 12% of the total atmospheric PAH deposition due to precipitation interception. Spatial variability between the 6 throughfall collectors reached a maximum of 25% during the wet season. Temporal trends showed significant variations of 27 to 54% throughout the year. PAH deposition increased during winter, due to higher emissions from domestic heating, less photoreactivity of the compounds and intense leaching of the atmosphere by wet deposition. Average daily fluxes were estimated for 6 quantified PAHs (PHE, ANT, PYR, B(b)F, B(k)F and B(a)P) at 182 ± 27 ng m-2 d-1, which agreed with studies previously carried out in other local rural areas. The major compounds were phenanthrene and pyrene, both markers of traffic emissions.

Item Type:Article
Additional Information:Thanks to EcoZONE editor. The definitive version is available at http://www.ecozone.ro
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
French research institutions > Institut National de la Recherche Agronomique - INRA (FRANCE)
Other partners > Universidad de Navarra (SPAIN)
Laboratory name:
Funders:
Communauté de Travail des Pyrénées
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Deposited By: Louise FOAN
Deposited On:23 Jan 2013 15:53

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