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- E-ISSN 2288-8985
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Radioactivity concentrations of natural radionuclides in fine dust of Jeju, Korea
Analytical Science and Technology / Analytical Science and Technology, (P)1225-0163; (E)2288-8985
2023, v.36 no.4, pp.191-197
https://doi.org/10.5806/AST.2023.36.4.191
(Department of Chemistry, Jeju National University & 2Institute for Nuclear Science and Technology, Jeju National University)
(Department of Chemistry, Jeju National University)
(Department of Chemistry, Jeju National University)
(Department of Chemistry, Jeju National University)
(Department of Chemistry, Jeju National University)
Chung-Hun,
H.
, Sohyeon,
L.
, &
Hee-Jung,
I.
(2023). Radioactivity concentrations of natural radionuclides in fine dust of Jeju, Korea. Analytical Science and Technology, 36(4), 191-197, https://doi.org/10.5806/AST.2023.36.4.191
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Abstract
Radioactivity concentrations for natural radionuclides were determined from fine dust samples collected in Jeju, Korea according to atmospheric events (Asian dust, haze, fog-mist, and non-event), and radium equivalent activity was calculated. The mean atmospheric radioactivity concentrations for 238U, 232Th, and 40K in 127 fine dust samples were 0.49, 0.24, and 7.23 μBq m−3, respectively, and the radium equivalent activity was 33.25 Bq kg−1. The mean concentrations of 238U and 232Th in the fine dust during the Asian dust period were 1.31 and 1.60 μBq m−3, respectively, above the global average, while the values for the other three atmospheric events were lower. The ratio of 232Th/238U radioactivity during the Asian dust period was 1.22, higher than the ratio for the other three atmospheric events.
- keywords
- natural radionuclides, fine dust, atmospheric phenomenon
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