Evaluation of Radiation effective dose by Naturally Radionuclides in the Soil of Busan
부산지역 토양 내 천연방사성핵종 분석 및 유효선량율 평가

Jung-Hoon Kim, Chang-Soo Kim, Chang-Seon Lim
2014 Journal of the Korea Academia-Industrial cooperation Society  
The presence of 238 U, 232 Th and 40 K, which are naturally residing radionuclides, in the ordinary soil of Busan, the 2 nd largest city in Korea, was anlayzed and the residents' radiation exposure to ordinary soil was evaluated. Regarding the measurement methods, to conduct a detailed analysis of the naturally residing radionuclides in the soil of Busan, this study divided the 16 administrative districts into a lattice structure with 3 spots, and collected a total of 48 soil samples (July 2012
more » ... samples (July 2012 and April 2013). ICP-MS was used to analyze the concentration of the radioactivity of 238 U and 232 Th in the soil, and a HpGe detector, a gamma ray detector, was used to analyze the radioactivity of 40 K. The measurement values of this study were compared with the concentration of radioactivity of East Asian regions. The concentration of 238 U nuclides in Korea was lower than the mean, whereas the concentration of 232 Th and 40 K nuclides was higher than the mean. The higher mean concentrations of 232 Th and 40 K than the mean were attributed to the many granite areas that contain a great deal of naturally occurring radionuclides.
doi:10.5762/kais.2014.15.6.3658 fatcat:xtew3sytsve5jcv4l5sffqm4w4