Determination and distribution of Po-210 in different morphological parts of tobacco plants and radiation dose assessment from cigarettes in Turkey


Cankurt S., UĞUR GÖRGÜN A.

ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY, cilt.197, 2020 (SCI İndekslerine Giren Dergi) identifier identifier identifier

Özet

Both sides of tobacco leaves accumulate Po-210 through their sticky hairs (trichomes) by means of diffusive deposition. It is known that tobacco leaves may contain high amounts of Po-210 concentrations. However, there is less information about radionuclides in tobacco plants. In the study, the Po-210 concentrations were determined monthly in different morphological parts of tobacco plants (leaf, stem, root) and soil samples and soil-to-plant transfer factor for Po-210 was determined and the activity concentrations of Po-210 radionuclide in 16 different popular brands of cigarettes were investigated in order to estimate the annual effective doses of Po-210 to smokers. Besides the study investigated (focused on) the correlation between the amount of rainfall and Po-210 concentration of tobacco leaf. The results of the present study indicated that the activity concentration of Po-210 in cigarettes distributed in Turkey ranged from 16.1 +/- 1.0 to 37.6 +/- 2.6 mBq per cigarette and the mean value of their activity concentrations was 22.4 +/- 1.5 mBq per cigarette. The mean value of annual effective doses of Po-210 to smokers (20 cigarettes smoked by an individual per day) obtained from these activity concentrations was estimated to be 188.5 +/- 12.4 mu Sv y(-1).