论文标题
纳米比亚温得和克范德克发电厂周围土壤中的自然放射性和相关的放射健康危害
Natural radioactivity & associated radiological health hazards in soil around Van Eck Power plant, Windhoek, Namibia
论文作者
论文摘要
原始放射性核素，例如铀（U-238），th-232）和钾（K-40）及其在煤炭中包含的后代，可能是热燃煤工厂中环境的关注来源。在这项研究中，纳米比亚范埃克燃煤发电厂周围土壤中RA-226，TH-232和K-40的平均活性浓度由伽马射线光谱技术的平均值确定。在研究的土壤样品中获得的平均活性浓度范围为7.74至20.04、8.59至31.74，以及108.8至484.9 bq/kg，平均为13.33、17.73和269.6 bq/kg，RA-226，TH-232，TH-232，th-232和K-40分别略高于by list Backcept wind WindHo，分别高于RA-226，TH-232，TH-232和K-40。估计的放射健康危害在规定的国际参考价值内。由于发电厂的燃烧活动，半径15公里范围内的居民在公共暴露范围内进行了剂量率。
Primordial radionuclides such as uranium (U-238), thorium (Th-232), and potassium (K-40) and their progenies contained in coal can be a source of concern to the environment in a thermal coal-powered plant. In this study, the average activity concentrations of Ra-226, Th-232, and K-40 in the soil around the Van Eck coal-fired power plant in Namibia were determined by the means of the gamma-ray spectrometry technique. The obtained average activity concentrations in the studied soil samples range from 7.74 to 20.04, 8.59 to 31.74, and 108.8 to 484.9 Bq/kg with an average of 13.33, 17.73, and 269.6 Bq/kg for Ra-226, Th-232, and K-40, respectively, which were slightly higher than the Windhoek background values. The estimated radiological health hazards were within the prescribed international reference values. The dose rates to which the residents within the 15 km radius are subjected due to combustion activities at the power plant were within the public exposure limits.
