- P-ISSN 1225-0163
- E-ISSN 2288-8985
금강수계 하천 및 호소 퇴적물에 대하여 천연 방사성핵종 농도를 조사하였다. 조사의 대상이 되는 지점은 하천 17개 지점, 호소 6개 지점으로 총 23개 지점이며, 하천은 2015년 9월부터 11월, 호소는 2015년 3월부터 4월까지 시료를 채취하였다. 분석 대상 핵종은 226Ra 계열, 232Th 계열과 40K 핵종이며, 고순도 게르마늄 검출기(HPGe)를 이용하여 대상 핵종 또는 그 자핵종이 방출하는 감마선을 계측하였다. 분석 결과 하천 퇴적물 중 226Ra계열, 232Th 계열과 40K의 방사성핵종 농도는 각각 15.6 ± 0.6, 33.8 ± 1.2, 789.8 ± 26.0 Bq/kg 으로 나타났으며, 호소 퇴적물의 농도는 각각 17.0 ± 0.5, 37.8 ± 1.1, 269.4 ± 9.6 Bq/kg 으로 나타났다. 232Th 계열 방사성핵종의 농도는 퇴적물 입도와 연관성을 보였으며, 핵종의 이동 특성에따라 226Ra 계열보다 높게 나타났다. 40K의 농도는 퇴적물 중 유기물 함량과 관련을 보였으며, 하천에 비하여 호소에서 낮은 농도로 조사되었다.
The concentration of natural radioactivity in the sediment of the Geum River was investigated. The river and lake sediment samples were collected at 23 points during September to November, 2015 and March to April, 2015, respectively. The gamma-rays emitted from the 226Ra and 232Th decay series and 40K were measured with a high purity germanium (HPGe) gamma detector. The average radioactivity concentrations of the 226Ra, 232Th decay series and 40K for the river sediment was found to be 15.6 ± 0.6, 33.8 ± 1.2, 789.8 ± 26.0 Bq/kg, respectively, while for the lake sediment, the concentrations were 17.1 ± 0.5, 37.8 ± 1.1, 269.4 ± 9.6 Bq/kg, respectively. Spearman’s correlation was conducted to compare the radioactivity concentration and properties of the sediment. The radioactivity concentration of the 232Th decay series showed a negative correlation with the particle size of the sediment, and was measured to be higher than the 226Ra decay series according to mobility of the radionuclides. The radioactivity concentration of 40K showed a negative correlation with organic matter content. The concentration of 40K in the lake sediment was lower than that in the river sediment.
1. UNSCEAR, “Sources and effects of ionizing radiation. Report of the United Nations Scientific Committee on the Effects of Atomic Radiation to the general assembly”, report, United Nations, New work, 2000.
2. K. Megumi, T. Oka, K. Yaskawa and M. Sakanoue, J. Geophys. Res., 87, 10857-10860 (1982).
3. T. E. Myrick, B. A. Berven and F. F. Haywood, Health phys., 45(3), 631-642 (1983).
4. W. Jacobi, ICRP publication 50, Radiat. Prot. Dosim., 24(1-4), 19-23 (1998).
5. A. Baeze, M. del Rfo, C. Miro and J. M. Paniagua, Radiat. Prot. Dosim., 45(1/4), 261-263 (1992).
6. J. Porstendorfer and A. Reineking, Radiat. Prot. Dosim., 45(1/4), 303-311 (1992).
7. UNSCEAR, “Ionizing Radiation : Sources and Biological Effects”, report, United Nations, New work., 1993.
8. P. K. Shetty and Y. Narayana, J. Environ. Radioact., 101, 1043-1047 (2010).
9. UNSCEAR, “Sources and effects of ionizing radiation. Report of the United Nations Scientific Committee on the Effects of Atomic Radiation to the general assembly”, report, United Nations, New work, 1993.
10. M. Krmar, J. Slivka, E. Varga, I. Bilit and M. Veskovic J. Geochem. Explor., 100(1), 20-24 (2009).
11. R. M. Amin, Int. J. Sci. Res., 4(2), 619-625 (2015).
12. M. Degerlier, G. Karahan and G. Ozger, J. Environ. Radioact., 99, 1018-1025 (2008).
13. V. Ramasamy, G. Suresh, V. Meenakshisundaram and V. Ponnusamy, Appl. Radiat. Isot., 69, 184-195 (2011).
14. G. Y. N. Eun, K. W. Kim, J. Y. Kim, I. S. Kim, J. M. Cha, D. J. Kim and K. N. Kim, Econ. Environ. Geo., 33(3), 195-204 (2000).
15. S. H. Kim, S. H. Lee, J. S. Oh, J. K. Choi and T. G. Kang, J. Radiat. Prot. Res., 40(4), 223-230 (2015).
16. Y. K. Kim, K. M. Kim, H. J. Jung, H. D. Kang, W. Kim, S. H. Doh and D. S. Kim, Econ. Environ. Geol., 38(6), 689-397 (2005).
17. K. Y. Lee, Y. Y. Yoon, S. Y. Cho, H. J. Lee, J. S. Lee, S. K., Koh and Y. J. Kim, J. Soil Groundw. Environ., 14(2), 10-16 (2009).
18. J. H. Kim, C. S. Kim and C. S, Lim, J. Korea Ind. Soc., 15(6), 3658-3666 (2014).
19. Ministry of Environment Act No. 11670(2013.03.22), Republic of Korea.
20. KINS, “Environmental Radioactivity Survey Data in Korea”, Korea Institute of Nuclear Safety, 2010.
21. Y. H. Cho, B. N. Seol, K. O. Min, W. S. Kim, J. B. Lee and S. H. Lee, J. Korean Soc. Environ. Eng., 38(1), 42-46 (2016).
22. J. Y. Kim, H. J. Jung, M. J. An, J. K. Hong, T. G. Kang, T. W. Kang, Y. H. Cho, Y. U. Han, B. N. Seol, W. S. Kim and K. H. Kim, Anal. Sci. Technol., 28(6), 377-384 (2015).
23. M. I. Chowdhurry, M. N. Alam and S. K. S. Hazari, Appl. Radiat. Isot., 51, 747-755 (1999).
24. M. A. Dar and A. A. El Saharty, Radiat. Prot. Dosim., 157, 85-92 (2013).
25. A. El-Gamal, Sl. Nasr and A. El-Taher, Radiat. Meas., 42, 457-465 (2007).
26. H. Eroglu and O. Kabadayi, Radiat. Prot. Dosim., 156, 331-335 (2013).
27. N. M. Ibrahiem, S. M. CShawky and H. A. Amer, Appl. Radiat. Isot., 46, 297-299 (1995).
28. M. O. Isinkaye and E. A. Oyedele, Radioprot., 43(4), 533-545 (2008).
29. N. N. Jibiri and I. C. Okeyode, Radiat. Phys. Chem., 81, 1829-1835 (2012).
30. A. E. M. Khater, Y. Y. Ebaid and S. A. El-mongy, Int. Congr. Ser., 1276, 405-406 (2005).
31. Y. Kobya, H. Taskin, C. M. Yeslkanat, A. Varinlioglu and S. Korcak, J. Radioanal. Nucl. Chem., 303, 287-295 (2015).
32. Y. Narayana, K. M. Rajashekara and K. Siddappa, J. Environ. Radioact., 95, 98-106 (2007).
33. A. A. Qureshi, S. A. Tariq, K. Ud Din, S. Manzoor and Waheed, A. Calligaris, J. Radiat. Res. Appl. Sci., 7(4),438-447 (2014).
34. L. Xinwei, Z. Xiaolan and W. Fengling, Environ. Geol., 53, 1483-1489 (2008).
35. UNSCEAR, “Sources and effects of ionizing radiation. Reprot of the United Nations Scientific Committee on the Effects of Atomic Radiation to the general assembly”, report, United Nations, New work, 1998.
36. Ministry of Environment Act No. 13530(2015.12.01), Republic of Korea.
37. A. El-Gamal, S. Sasr and A. El-Taher, Radiat. Meas., 42, 457-465 (2007).
38. F. Michael and L’ Annunziata, ‘Handbook of radioactivity analysis’, 3rd Ed., Academic press, Elsevier, 2012.
39. R. Gilmore Gordon ‘Practical gamma-ray spectrometry’, 2nd Ed., Wiley, New Jersey, 2008.
40. G. Suresh, V. Ramasamy, V. Meenakshisundaram, R. Venkatachalapathy and V. Ponnusamy, J. Environ. Radioact., 102, 370-377 (2011).
41. V. Ramasamy, K. Raramasivam, G. Suresh and M. T. Jose, Spectrohimica Acta, 117, 340-350 (2014).