Ege University, Institute of Nuclear Sciences, 35100, Bornova, İzmir, Turkey.
Ege University, Institute of Nuclear Sciences, 35100, Bornova, İzmir, Turkey.
Ecotoxicol Environ Saf. 2020 Jul 1;197:110603. doi: 10.1016/j.ecoenv.2020.110603. Epub 2020 Apr 15.
Both sides of tobacco leaves accumulate Po through their sticky hairs (trichomes) by means of diffusive deposition. It is known that tobacco leaves may contain high amounts of Po concentrations. However, there is less information about radionuclides in tobacco plants. In the study, the Po 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 was determined and the activity concentrations of Po radionuclide in 16 different popular brands of cigarettes were investigated in order to estimate the annual effective doses of Po to smokers. Besides the study investigated (focused on) the correlation between the amount of rainfall and Po concentration of tobacco leaf. The results of the present study indicated that the activity concentration of Po 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 to smokers (20 cigarettes smoked by an individual per day) obtained from these activity concentrations was estimated to be 188.5 ± 12.4 μSv y.
烟叶通过其粘性毛发（表皮毛）以扩散沉积的方式在叶片的两面积累 Po。众所周知，烟叶可能含有高浓度的 Po。然而，关于烟草植物中的放射性核素的信息较少。在这项研究中，每月在烟草植物（叶片、茎、根）的不同形态部分和土壤样本中测定 Po 浓度，并测定 Po 的土壤-植物转移系数，同时调查 16 种不同流行品牌香烟中 Po 放射性核素的活度浓度，以估算 Po 对吸烟者的年有效剂量。除了研究外（重点关注）降雨量和烟叶 Po 浓度之间的相关性。本研究结果表明，分布在土耳其的香烟中的 Po 活度浓度范围为每支 16.1±1.0 至 37.6±2.6 mBq，其活度浓度的平均值为每支 22.4±1.5 mBq。从这些活度浓度中获得的每天吸 20 支香烟的吸烟者的 Po 年有效剂量的平均值估计为 188.5±12.4 μSv y。
