Status of a national monitoring program for environmental radioactivity and investigation of artificial radionuclide concentrations (134Cs, 137Cs, 131I) in rivers and lakes

방사성물질 측정망 현황 및 하천·호소 내 인공방사성물질 (134Cs, 137Cs, 131I) 조사

  • Received : 2015.08.11
  • Accepted : 2015.10.27
  • Published : 2015.12.25


A survey of the artificial radionuclides in rivers and lakes was conducted to investigate their levels in surface water. Water samples were collected at 60 points and analyzed by gamma-ray spectrometry with a measurement time of 10,000 seconds for 134Cs, 137Cs, and 131I. The obained values were lower than MDA for all points, except one point for 131I that was 0.533±0.058 Bq/L. 131I is known as a radioactive material that occurs frequently in sewage treatment plants. Because it is often used for medical treatments and subject to spreading into the environment due to the excretion from the patients. For the point where 131I was detected, we conducted additional investigation on the upstream river point and the effluent points of nearby sewage treatment plant to find the source of 131I. 131I was not detected at the upstream points of one of the upstream sewage treatment plants but found at the downstream points with the level being 0.257±0.034 to 0.799±0.051 Bq/L, proving the sewage treatment plant was the 131Isource.


Artificial radionuclides;$^{134}Cs$;$^{137}Cs$;$^{131}I$;Environmental monitoring


  1. N. Kinoshita, K. Sueki, K. Sasa, J. Kitagawa, S. Ikarashi, T. Nishimura, Y. S. Wong, Y. Satou, K. Handa, T. Takahashi, M. Sato and T. Yamagata, P. Natl. Acad. Sci. USA., 108(49), 19526-19529 (2011).
  2. INES, ‘Rating on the Events in Fukushima Dai-ichi Nuclear Power Station by the Tohoku District-off the Pacific Ocean Earthquake’, pp. 3-5, METI, Japan, 2011.
  3. NOAA,, Assessed 11 Mar. 2011.
  4. Nuclear Safety and Security Commission Act No. 13078 (2015.01.20), Republic of Korea.
  5. IRSN, 'Report on the Radiological State of the Environment in France in 2010-2011', pp. 6-29, BP 182, France, 2014.
  6. Ministry of Environment, 'Study Group Report on the Constant Monitoring of Radioactive Substances', Japan, 2013.
  7. NRA,, Assessed 1 Jan. 2000.
  8. USEPA,, Assessed 29 Oct. 2015.
  9. Ministry of Food and Drug Safety Notification No. 2012-128 (2012.06.21), Standards and Specifications for Foods.
  10. Ministry of Food and Drug Safety,, Assessed 26 Mar. 2011.
  11. CODEX, 'General Standard for Contaminants and Toxins in Food and Feed', p2-53, CODEX STAN 193-1995, USA, 1995.
  12. WHO, ‘Health Risk Assessment from the Nuclear Accident after the 2011 Great East Japan Earthquake and Tsunami, based on a Preliminary Dose Estimation’, p17-24, ISBN 978-92-4-150513-0, Japan, 2013.
  13. V. Valkovic, ‘Radioactivity in the Environment’, ISBN 0-444-82954-7, p468-474, Elsever, Netherlands, 2000.
  14. KINS, ‘Environmental Radioactivity Survey Data in Korea’, KINS/ER-028, 88-90, 2011.
  15. P. Thakur, S. Ballard and R. Nelson, Sci. Environ., 458-460, 577-613 (2013).
  16. NRA, ‘Materials were reported to the Nuclear Safety and Security Commission’, No. 77, Japan, 2011.
  17. P. S. Rose, J. P. Smith, J. K. Cochran, R. C. Aller and R. L. Swanson, Sci. Total Environ., 452-453, 87-97 (2013).
  18. S. Nagao, M. Kanamori, S. Ochiai, K. Suzuki and M. Yamamoto, Prog. Nucl. Sci. Technol., 4, 9-13 (2014).
  19. Y. Oura and M. Ebihara, Geochem J., 46, 303-309 (2012).
  20. B. U. Chang, S. W. Choi, M. H. Song, J. S. Lee and Y. J. Kim, Radiat. Prot. Dosim., 146(1-3), 318-321 (2011).
  21. ATSDR, 'Radiation Exposure from Iodine 131', SS3117, p5-7, USA, 2008.
  22. EPA, 'Radioactivity of municipal sludge', 823R86101, p1-25, USA, 1986.
  23. T. Kanjimoto, S. Endo, T. Naganuma and K. Shizuma, Kyoto Univ. Res. React. Inst., 2(8), 1-5 (2012).
  24. ATSDR, ‘Toxicological Profile for Cesium’, PB2004-104397, p2-4, USA, 2004.
  25. M. H. Lee, H. S. Shin, K. H. Hong, Y. H. Cho and C. W. Lee, J. Radiat. Prot., 24(3), 171-184 (1999).
  26. E. S. Jang, Korean Soc. Radiol., 5(1), 5-10 (2011).
  27. G. R. Gilmore, ‘Practical Gamma-ray Spectrometry’, 2nd Ed., ISBN 978-0-470-86196-7, p114-129, Wiley, USA, 2008.
  28. L. A. Currie, Am. Chem. Soc. Publ., 40(3), 586-593 (1968).
  29. Ministry of Environment Notification No. 2014-160 (2014.09.03), Republic of Korea.
  30. Ministry of Environment Act No.10272 (2010.04.15.), Republic of Korea.
  31. KRISS, 'An Establishment of Standard Operating Procedure for Radioactive Materials in Public Waters', pP. 5-40, 2014.
  32. J. A. Sanchez-Cabeza, L. Pujol, J. Merino, J. M. Bruach and J. Molero, Water Air Soil Poll., 118, 339-356 (2000).
  33. O. Connan, E. Tessier, D. Maro, D. Amouroux, D. Hebert, M. Rozet, C. Voiseux and L. Solier, J. Environ. Radioactiv., 99, 1102-1110 (2008).
  34. M. Malta, J. M. Oliveira, L. Silva and F. P. Carvalho, J. Integr. Coast. Zone Manage., 13(4), 399-408 (2013).
  35. T. Yasutaka, Y. Kawabe, A. Kurosawa and T. Komai, Kyoto Univ. Res. React. Inst., 2(17), 1-4 (2012).
  36. H. W. Fischer, S. Ulbrich, D. Pittauerova and B. Hettwig, J. Environ. Radioactiv., 100, 1079-1085 (2009).
  37. F. Jimnez, R. Lpez, R. Pardo, L. Debn and M. G. Talavera, Radiat. Meas., 46, 104-108 (2011).
  38. F. Jimnez, L. Debn, R. Pardo, R. Lpez and M. G. Talavera, Spain, Water Air Soil Poll., 217, 515-521 (2011).

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