Physics Department, Faculty of Science, South Valley University, Qena, 83523, Egypt.
Radiat Environ Biophys. 2021 May;60(2):347-357. doi: 10.1007/s00411-021-00902-0. Epub 2021 Mar 17.
The activity concentrations of Pb and Po in the most popular cigarettes and moassel tobacco brands consumed in Egypt were determined by the spontaneous deposition method using alpha spectrometry. It turned out that the activity concentration of Po was higher than that of Pb in all tobacco brands. Higher activity concentrations for both Pb and Po were found in cigarette than in moassel tobacco. The average activity concentrations of Pb and Po in cigarette tobacco were 11.79 ± 1.67 and 15.00 ± 1.83 mBq cig, respectively, whereas in moassel tobacco the values were 7.08 ± 1.91 and 9.12 ± 1.12 mBq g, respectively. The daily activities inhaled in the lung of a smoker and the inhalation effective doses due to cigarette and shisha smoking were calculated. The results revealed that the total Pb and Po daily activities inhaled and the total annual inhalation effective doses due to shisha smoking were two times greater than the corresponding values due to cigarette smoking. Also, the results indicated that the annual effective doses from inhalation of Pb and Po due to smoking 20 cigarettes per day are 14 and 16 times greater than the annual ingestion doses from the diet, respectively. In contrast, the annual effective doses from inhalation of Pb and Po due to shisha smoking (27 g moassel tobacco per day) are 26 and 33 times greater than the annual ingestion doses from the diet, respectively.
采用自发沉积法，通过α谱法测定了在埃及消费的最受欢迎的香烟和水烟烟草品牌中 Pb 和 Po 的放射性活度浓度。结果表明，所有烟草品牌中 Po 的放射性活度浓度均高于 Pb。香烟中的 Pb 和 Po 放射性活度浓度均高于水烟烟草。香烟烟草中 Pb 和 Po 的平均放射性活度浓度分别为 11.79 ± 1.67 和 15.00 ± 1.83 mBq cig，而水烟烟草中的相应值分别为 7.08 ± 1.91 和 9.12 ± 1.12 mBq g。计算了吸烟者肺部吸入的每日活动量以及由于吸烟和水烟吸烟引起的吸入有效剂量。结果表明，由于水烟吸烟而吸入的总 Pb 和 Po 每日活动量以及由于水烟吸烟而导致的总年度吸入有效剂量是由于吸烟引起的相应值的两倍。此外，结果表明，每天吸 20 支香烟所导致的 Pb 和 Po 从吸入途径摄入的年有效剂量分别是从饮食中摄入的 14 倍和 16 倍。相比之下，由于每天吸食 27 克水烟烟草而导致的 Pb 和 Po 从吸入途径摄入的年有效剂量分别是从饮食中摄入的 26 倍和 33 倍。
