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Comparing early twentieth century and present-day atmospheric pollution in SW France: a story of lichens

Agnan, Yannick and Séjalon-Delmas, Nathalie and Probst, Anne Comparing early twentieth century and present-day atmospheric pollution in SW France: a story of lichens. (2013) Environmental Pollution, 172. 139-148. ISSN 0269-7491

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Official URL: http://dx.doi.org/10.1016/j.envpol.2012.09.008

Abstract

Lichens have long been known to be good indicators of air quality and atmospheric deposition. Xanthoria parietina was selected to investigate past (sourced from a herbarium) and present-day trace metal pollution in four sites from South-West France (close to Albi). Enrichment factors, relationships between elements and hierarchical classification indicated that the atmosphere was mainly impacted by coal combustion (as shown by As, Pb or Cd contamination) during the early twentieth century, whereas more recently, another mixture of pollutants (e.g. Sb, Sn, Pb and Cu) from local factories and car traffic has emerged. The Rare Earth Elements (REE) and other lithogenic elements indicated a higher dust content in the atmosphere in the early twentieth century and a specific lithological local signature. In addition to long-range atmospheric transport, local urban emissions had a strong impact on trace element contamination registered in lichens, particularly for contemporary data.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF can be found at Environmental Pollution website: http://www.sciencedirect.com/science/article/pii/S0269749112004101
HAL Id:hal-00875705
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - INPT (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Funders:
ADEME
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Deposited By: Yannick AGNAN
Deposited On:22 Oct 2013 13:26

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