title: Daily intakes of naturally occurring radioisotopes in typical Korean foods.
abstract: The concentrations of naturally occurring radioisotopes ((232)Th, (228)Th, (230)Th, (228)Ra, (226)Ra, and (40)K) in typical Korean foods were evaluated. The daily intakes of these radioisotopes were calculated by comparing concentrations in typical Korean foods and the daily consumption rates of these foods. Daily intakes were as follows: (232)Th, 0.00-0.23; (228)Th, 0.00-2.04; (230)Th, 0.00-0.26; (228)Ra, 0.02-2.73; (226)Ra, 0.01-4.37 mBq/day; and (40)K, 0.01-5.71 Bq/day. The total daily intake of the naturally occurring radioisotopes measured in this study from food was 39.46 Bq/day. The total annual internal dose resulting from ingestion of radioisotopes in food was 109.83 muSv/y, and the radioisotope with the highest daily intake was (40)K. These values were same level compiled in other countries.
authors.affiliation: Department of Physics, Kyungpook National University, 1370 Sangyug-Dong, Buk-Gu, Daegu 702-701, Republic of Korea. sullhan@naver.com
authors.forename: Min-Seok
authors.initials: MS
authors.lastname: Choi
authors.forename: Xiu-Jing
authors.initials: XJ
authors.lastname: Lin
authors.forename: Sun Ah
authors.initials: SA
authors.lastname: Lee
authors.forename: Wan
authors.initials: W
authors.lastname: Kim
authors.forename: Hee-Dong
authors.initials: HD
authors.lastname: Kang
authors.forename: Sih-Hong
authors.initials: SH
authors.lastname: Doh
authors.forename: Do-Sung
authors.initials: DS
authors.lastname: Kim
authors.forename: Dong-Myung
authors.initials: DM
authors.lastname: Lee
mesh_terms: D005504:Food Analysis; D006801:Humans; D007723:Korea; D011868:Radioisotopes / Q000032:analysis*
chemical_list: D011868:Radioisotopes