Atmospheric dispersion of pollutants in Sado estuary (Portugal) using biomonitors
by Maria Do Carmo Freitas, Ana Paula Marques, Miguel A. Reis, Maria Manvel Farinha
International Journal of Environment and Pollution (IJEP), Vol. 32, No. 4, 2008

Abstract: Epiphytic lichen transplants and aerosol samplers were put together in the Setubal area, Portugal. They were analysed by Instrumental Neutron Activation Analysis (INAA) and Proton Induced X-ray Emission (PIXE). The lichen dataset pointed out nine factors. No relevant differentiation was found towards different positioning of the lichens. T-transplants were delayed towards F-transplants, and for both after 3 and 6 months the accumulation was as much as at 9th month. Direct rainfall protection favoured accumulation for a few elements only. The elemental accumulation in lichens depended more on temperature and humidity conditions. Aerosol data towards lichen database showed an excellent correlation.

Online publication date: Wed, 21-May-2008

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