Daily intakes of naturally occurring radioisotopes in typical Korean foods.
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.
Choi
Min-Seok
MS
Department of Physics, Kyungpook National University, 1370 Sangyug-Dong, Buk-Gu, Daegu 702-701, Republic of Korea. sullhan@naver.com
Lin
Xiu-Jing
XJ
Lee
Sun Ah
SA
Kim
Wan
W
Kang
Hee-Dong
HD
Doh
Sih-Hong
SH
Kim
Do-Sung
DS
Lee
Dong-Myung
DM
D005504:Food Analysis; D006801:Humans; D007723:Korea; D011868:Radioisotopes / Q000032:analysis*
D011868:Radioisotopes