Daily intakes of naturally occurring radioisotopes in typical Korean foods

• Published in: Journal of environmental radioactivity Vol. 99; no. 8; pp. 1319 - 1323
• Main Authors: Choi, Min-Seok, Lin, Xiu-Jing, Lee, Sun Ah, Kim, Wan, Kang, Hee-Dong, Doh, Sih-Hong, Kim, Do-Sung, Lee, Dong-Myung
• Format: Journal Article
• Language: English
• Published: Oxford Elsevier Ltd 01-08-2008; Elsevier
• Subjects: Activity concentration; Annual internal dose; Biological and medical sciences; Biological effects of radiation; Food Analysis; Fundamental and applied biological sciences. Psychology; Humans; Korea; Natural radioisotopes; Radiocontamination; Radioisotopes - analysis; Tissues, organs and organisms biophysics; Typical Korean foods; Asia; South Korea; Korea; Typical Korean foods; Natural radioisotopes; Activity concentration; Annual internal dose; Human; Health and environment; Natural radioactivity; Radioactive contamination; Dosimetry; Radioisotope; Activity concentration;Annual internal dose;Typical Korean foods;Natural radioisotopes; Radioactivity measurement; Public health; Food; Ingestion
• ISSN: 0265-931X; 1879-1700
• DOI: 10.1016/j.jenvrad.2008.04.003

The concentrations of naturally occurring radioisotopes (
232Th,
228Th,
230Th,
228Ra,
226Ra, and
40K) 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:
232Th, 0.00–0.23;
228Th, 0.00–2.04;
230Th, 0.00–0.26;
228Ra, 0.02–2.73;
226Ra, 0.01–4.37
mBq/day; and
40K, 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
μSv/y, and the radioisotope with the highest daily intake was
40K. These values were same level compiled in other countries.