论文标题
对埃塞俄比亚当地市场收集的茶样品的自然放射性水平的调查和评估的评估
Investigations of Natural Radioactivity levels and Assessment of radiological hazard of Tea samples collected from local market in Ethiopia
论文作者
论文摘要
在这项研究中，自然的活动浓度（238 U，232，40 K）和人工放射性核素（137 Cs）是从埃塞俄比亚（Addis Ababa City）的当地市场收集的六个不同品牌茶的测量值。已经通过由高纯净锗（HPGE）检测器和多通道分析仪组成的检测系统进行了分析。平均活性浓度分别为238U，232th和40 K。发现平均值3.66 $ \ pm $ 0.47、18.28 $ \ pm $ 2.4和582.59 $ \ pm $ 29.64 bq/kg。 40K的活性浓度比另一个茶的其他规范更快。为了评估自然放射性的放射学危害，赖克（RAEQ），外部危害指数（HEX），内部HAZRD指数（HIN），总吸收剂量率（D），已经计算了年度有效剂量等效（AEDE）并与国际可接受的值进行了比较。
In this study, the activity concentration of natural ( 238 U, 232 Th, 40 K) and artificial radionuclides (137 Cs) were measurements in six different brands of tea have been collected from local market in Ethiopia (Addis Ababa city). have been analyzed by a detection system consisting of High Purity Germanium (HPGe) detector and multichannel analyzer. The average activity concentrations were nuclide M D A report 238U, 232Th and 40 K respectively. The mean values were found 3.66$ \pm$0.47, 18.28$\pm $2.4 and 582.59$ \pm $29.64 Bq/kg respectively. The activity concentration of 40K is increasing faster than the other NORM for Tea. In order to evaluate the radiological hazard of the natural radioactivity, radium equivalent (Raeq ), the external hazard index (Hex), internal hazrd index (Hin) , the total absorbed dose rate (D), the annual effective dose equivalent (AEDE) have been calculated and compared with the international acceptable value.
