期刊名称：Research Journal of Environmental and Earth Sciences
印刷版ISSN：2041-0484
电子版ISSN：2041-0492
出版年度：2009
卷号：1
期号：1
页码：6-10
出版社：Maxwell Science Publications
摘要：The objective of this study is to evaluate the radionuclides (U238 , Th232 and K40) content and outdoor terrestrial gamma dose rates in the Ponnaiyar river sediments to understand the radiation hazards to mankind. The determined activity concentrations of all sites are fall within the typical world and Indian average values although some extreme values are determined. To assess the radiological hazard of river sediments, the radiological hazard indices such as absorbed dose rate, annual effective dose equivalent (outdoor and indoor) (AEDE), hazard indices (Hex and Hin), activity utilization index (I) and excess life time cancer risk (ELCR) are calculated. The radiological hazard indices are below the internationally recommended values. The last eight sampling sites have higher ELCR value.
关键词：activity utilization index; ; annual effective dose ; radioactivity ; radiological hazard indices ; ponnaiyar river ;
