S. Chibowski et M. Reszka, Investigation of Lublin town environment contamination by radionuclides and heavy metals with application of Parmeliaceae lichens, J RAD NUCL, 247(2), 2001, pp. 443-446
Contamination uf ground level air at Lublin town was studied by measurement
s of radioactive isotope and heavy metal contents in Parmeliaceae lichens e
xposed during six months on the art-a of the town. The concentration of the
elements studied was compared with these ones measured in unexposed (blank
) samples of lichens. The highest increase of radioactivity was noticed for
Th-232, Ra-226 and K-40. The contamination bq Cs-137 does nut increased ma
rkedly, ranging from 2 to 107 Bq/kg of the dry lichen sample. Nearly half o
f the exposed samples do nut reveal any increase of cesium radioactivity. H
eavy metal concentrations in analyzed lichens were low. From the results ob
tained, one may conclude that concentration of these metals in ground air l
evel does not reach appreciable values.