Traffic pollution monitoring using lichens as bioaccumulators of heavy metals and polycyclic aromatic hydrocarbons

Owczarek, M.; Guidotti, M.; Blasi, G.; Simone, C. de; Marco, A. de; Spadoni, M.

Fresenius Environmental Bulletin 10(1): 42-45

2001


ISSN/ISBN: 1018-4619
Accession: 003600718

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Abstract
This research dealt with the study of the concentrations of the heavy metals Al, As, Cd, Co, Cr, Mn, Ni, Pb, Zn, and some polycyclic aromatic hydrocarbons (PAHs) in thalli of the epiphytic lichen, Physcia adscendens, in six areas of the Rieti town, Italy, as influenced by different traffic pollution levels. The results obtained showed a correlation between vehicular traffic intensity and concentration of heavy metals (Pb, Al, Fe, Cr, Ni and Zn) and PAHs in thalli of Physcia adscendens. However, no significant correlations were found between heavy metals content and polycyclic aromatic hydrocarbon concentrations in the lichen thalli, suggesting a different response of the lichens to the presence of high levels of heavy metals and PAHs in the ambient air.