Heavy metals inParmelia sulcata collected in the neighborhood of a coal-fired power station
- 31 Downloads
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 byk0-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 EntriesHeavy metals air pollution biomonitors coal station neutron activation analysis
Unable to display preview. Download preview PDF.
- 1.M. De Bruin,IAEA Bull. 4, 22 (1990).Google Scholar
- 2.F. Catarino, C. Máguas, C. Branquinho, C. Sérgio, and W. Kratz,Environ. Pollu. 1-ICEP,1.Google Scholar
- 4.H. J. M. Bowen,Environmental Chemistry of the Elements, Academic, London, 1979.Google Scholar
- 5.F. De Corte, M. C. Freitas, Lin Xilei, and A. Simonits, paper presented at this conference (NAMLS 1993).Google Scholar