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<p>This study revealed the spatial distributions of terrestrial gamma radiation and natural radionuclide (<sup>226</sup>Ra, <sup>232</sup>Th, and <sup>40</sup>K) concentrations in E-Tong Village, a former tin mining area in Thailand. The absorbed dose rate in air ranged from 36&#xa0;nGy&#xa0;h<sup>−1</sup> to 254&#xa0;nGy&#xa0;h<sup>−1</sup>, which is higher than the world average due to concentrated <sup>226</sup>Ra and <sup>232</sup>Th contents in the soil. Their spatial distributions were influenced by the geological setting, which consists of granitic and metasedimentary rocks. The external exposures measured in this study do not affect people, but further indoor radiation measurements are required to confirm radiation impact assessments.</p>

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Natural gamma dose rate and radioactivity concentrations at a former tin mining area in Kanchanaburi, Thailand

  • 期刊论文

  • 发表日期：

    2025年3月4日

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  • Saowarak Musikawan,
  • Worawat Poltabtim,
  • Khemruthai Kheamsiri,
  • Chutima Kranrod,
  • Theerawat Pluemjit,
  • Kitkawin Aramrun,
  • Yasutaka Omori,
  • Hirofumi Tazoe,
  • Masahiro Hosoda,
  • Naofumi Akata,
  • Shinji Tokonami

摘要

This study revealed the spatial distributions of terrestrial gamma radiation and natural radionuclide (226Ra, 232Th, and 40K) concentrations in E-Tong Village, a former tin mining area in Thailand. The absorbed dose rate in air ranged from 36 nGy h−1 to 254 nGy h−1, which is higher than the world average due to concentrated 226Ra and 232Th contents in the soil. Their spatial distributions were influenced by the geological setting, which consists of granitic and metasedimentary rocks. The external exposures measured in this study do not affect people, but further indoor radiation measurements are required to confirm radiation impact assessments.