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Levels and Sources of PAHs in Selected Sites from Portugal: Biomonitoring with Pinus pinea and Pinus pinaster Needles

  • Nuno Ratola
  • José Manuel Amigo
  • Arminda AlvesEmail author
Article

Abstract

Pine needle samples from two pine species (Pinus pinaster Ait. and Pinus pinea L.) were collected at 29 sites scattered throughout Portugal, in order to biomonitor the levels and trends of 16 polycyclic aromatic hydrocarbons (PAHs). The values obtained for the sum of all PAHs ranged from 76 to 1944 ng/g [dry weight (dw)]. Despite the apparent matrix similarities between both pine species, P. pinaster needles revealed higher mean entrapment levels than P. pinea (748 and 399 ng/g (dw) per site, respectively). The urban and industrial sites have the highest average of PAH incidence [for P. pinea, 465 and 433 ng/g (dw) per site, respectively, and for P. pinaster, 1147 and 915 ng/g (dw)], followed by the rural sites [233 ng/g and 711 ng/g (dw) per site, for P. pinea and P. pinaster, respectively]. The remote sites, both from P. pinaster needles, show the least contamination, with 77 ng/g (dw) per site. A predominance of 3-ring and 4-ring PAHs was observed in most samples, with phenanthrene having 30.1% of the total. Naphthalene prevailed in remote sites. Rainfall had no influence on the PAHs levels, but there was a relationship between higher wind speeds and lower concentrations. PAH molecular ratios revealed the influence of both petrogenic and pyrogenic sources.

Keywords

PAHs Phen Site Type Rural Site Remote Site 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Notes

Acknowledgments

The authors wish to thank Fundação para a Ciência e a Tecnologia (Portugal) for the scholarship SFRH/BD/11970/2002 and the project PTDC-AGR-CFL-73156/06. Dr. Olga Ferreira is thanked for her collaboration in the collection of the samples.

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Copyright information

© Springer Science+Business Media, LLC 2010

Authors and Affiliations

  • Nuno Ratola
    • 1
  • José Manuel Amigo
    • 2
  • Arminda Alves
    • 1
    Email author
  1. 1.LEPAE, Departamento de Engenharia QuímicaFaculdade de Engenharia da Universidade do PortoPortoPortugal
  2. 2.Department of Food Science, Quality and Technology, Faculty of Life SciencesUniversity of CopenhagenFrederiksberg CDenmark

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