Environmental Applications

Biological Trace Element Research

, Volume 43, Issue 1, pp 207-212

First online:

Heavy metals inParmelia sulcata collected in the neighborhood of a coal-fired power station

  • M. Carmo FreitasAffiliated withInstituto de Ciências e Engenharia Nucleares, Departamento de Química, Instituto Nacional de Engenharia e Tecnologia Industrial (INETI)

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Abstract

The epiphytic lichenParmelia sulcata was collected in the neighborhood of a Portuguese coal-fired power station (Sines coal power station) as monitor for heavy metal air pollution. A study of the metal contents variability along 1991 and 1992 was performed. The heavy metals Ag, As, Br, Co, Cr, Fe, Hg, Sb, Se, and Zn were determined byk 0-based instrumental neutron activation analysis. The concentrations found in 1991 and 1992 show an accumulating process of Co and Fe (≈5%/mo) and of Cr and Sb (≈7%/mo). Low accumulation is observed for Ag, Se, and Zn (≈2%/mo), and no concentration variation is observed for As, Br, and Hg. It is concluded that the metal accumulation observed is the result of the nearby ash and coal deposits.

Index Entries

Heavy metals air pollution biomonitors coal station neutron activation analysis