Studying of Po and Pb Deposition in Some Lichen Species in Manisa, Turkey.

Lichens are very useful for monitoring of the radionuclide deposition because having a high efficiency capturing the radionuclides from the atmospheric fallout. In the present work, Po and Pb deposition in some lichen species were determined using an alpha spectrometer. Different lichens were collected around Demirci-Manisa and investigated their uses as biomonitor for Po and Pb deposition. The highest activity concentrations for Po and Pb were detected in Neofuscelia pulla (898 Bq kg and 1207 Bq kg, respectively). The mean activities in the lichen species ranged from 164 to 584 Bq kg for Po and from 175 to 671 Bq kg for Pb. The activity ratios for Po/Pb ranged from 0.75 to 1.57.