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Spatial distribution of PAH concentrations and stable isotope signatures (δ13C, δ15N) in mosses from three European areas - Characterization by multivariate analysis

Abstract : Polycyclic aromatic hydrocarbon (PAH) concentrations and N, C stable isotope signatures were determined in mosses Hypnum cupressiforme Hedw. from 61 sites of 3 European regions: Île-de-France (France); Navarra (Spain); the Swiss Plateau and Basel area (Switzerland). Total PAH concentrations of 100-700 ng g-1, as well as δ13C values of -32 to -29‰ and δ15N values of -11 to -3‰ were measured. Pearson correlation tests revealed opposite trends between high molecular weight PAH (4-6 aromatic rings) content and δ13C values. Partial Least Square regressions explained the very significant correlations (r > 0.91, p < 0.001) between high molecular weight PAH concentrations by local urban land use (<10 km) and environmental factors such as elevation and pluviometry. Finally, specific correlations between heavy metal and PAH concentrations were attributed to industrial emissions in Switzerland and road traffic emissions in Spain.
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https://hal.archives-ouvertes.fr/hal-00881685
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Submitted on : Friday, November 8, 2013 - 5:11:51 PM
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Louise Foan, Sébastien Leblond, Lotti Thöni, Christine Raynaud, Jesus Miguel Santamaria, et al.. Spatial distribution of PAH concentrations and stable isotope signatures (δ13C, δ15N) in mosses from three European areas - Characterization by multivariate analysis. Environmental Pollution, Elsevier, 2014, vol. 184, pp. 113-122. ⟨10.1016/j.envpol.2013.08.006⟩. ⟨hal-00881685⟩

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