PDF(Pubmed)
Abstract：
This study determined natural and artificial radionuclide concentrations to evaluate natural radioactivity and health risk levels of nine travertines in the Yaprakhisar and Balkayası regions in Turkey. The samples coded B1-M, B2, B5, B7, B8, and B10 represent waste derived from the Yaprakhisar travertines, as well as samples T5-M, T12, and Z1 travertines derived from Balkayası. The levels of natural and artificial radionuclide concentrations (232Th, 40K, and 137Cs) were measured using a high-purity germanium (HpGe) detector system. The travertine activity ranged from 2.09 to 12.07 Bq kg-1 for 232Th, 4.21 to 13.41 Bq kg-1 for 40K, and 0.42-3.26 Bq kg-1 for 137Cs. The results showed that the activity concentration values for 232Th, 40K, and 137Cs were coherent with the travertine analysis results in the UNSCEAR, 2000; 2008 publications. The values obtained were lower than the average values in the UNSEAR reports. The radiological hazard parameters calculated in this study were absorbed gamma dose rate (D), radium equivalent activity (Raeq), annual gonadal dose equivalent (AGDE), exposure dose (ER), total annual effective dose (AEDEtotal), excess lifetime cancer risk (ELCRtotal), gamma representative level (GRL), internal hazard index (Hin) and external hazard index (Hex).
摘要：
这项研究确定了天然和人工放射性核素的浓度，以评估土耳其Yaprakhisar和Balkayasº地区9种石灰华的天然放射性和健康风险水平。编码B1-M的样本，B2，B5，B7，B8和B10代表来自Yaprahisar石灰华的废物，以及样品T5-M，T12和Z1石灰华源自Balkayasº。天然和人工放射性核素浓度的水平(232Th，40K,和137Cs）使用高纯度锗（HpGe）检测器系统进行测量。232Th的石灰华活动范围为2.09至12.07Bqkg-1，对于40K，4.21至13.41Bqkg-1，137Cs为0.42-3.26Bqkg-1。结果表明,活性浓度值为232Th,40K,137Cs与UNSCEAR中的石灰华分析结果一致，2000年；2008年出版物。获得的值低于UNSEAR报告中的平均值。本研究中计算的放射性危害参数为吸收γ剂量率(D)，镭当量活度(Raeq)，年性腺剂量当量（AGDE），暴露剂量（ER），年总有效剂量（AEDEtotal），终生癌症风险过高（ELCRTotal），gamma代表电平(GRL),内部危险指数(Hin)和外部危险指数(Hex)。
