Earticle

초록

영어

Background: As new legislation has come into force implementing radiation safety management for the use of naturally occurring radioactive materials (NORM), it is necessary to establish a rapid and accurate measurement technique. Measurement of 238U and 232Th using conventional methods encounter the most significant difficulties for pretreatment (e.g. , purification, speciation, and dilution/enrichment) or require time-consuming processes. Therefore, in this study, the applicability of ED-XRF as a non-destructive and rapid screening method was validated for raw materials and by-product samples. Materials and Methods: A series of experiments was conducted to test the applicability for rapid screening of XRF measurement to determine activity of 238U and 232Th based on certified reference materials (e.g. , soil, rock, phosphorus rock, bauxite, zircon, and coal ash) and NORM samples commercially used in Korea. Statistical methods were used to compare the analytical results of ED-XRF to those of certified values of certified reference materials (CRM) and inductively coupled plasma mass spectrometry (ICP-MS). Results and Discussion: Results of the XRF measurement for 238U and 232Th showed under 20% relative error and standard deviation. The results of the U-test were statistically significant except for the case of U in coal fly ash samples. In addition, analytical results of 238U and 232Th in the raw material and by-product samples using XRF and the analytical results of those using ICP-MS (R2 ≥ 0.95) were consistent with each other. Thus, the analytical results rapidly derived using ED-XRF were fairly reliable. Conclusion: Based on the validation results, it can be concluded that the ED-XRF analysis may be applied to rapid screening of radioactivities (238U and 232Th) in NORM samples.

목차

ABSTRACT
 Introduction
 Materials and Methods
  1. Analysis Equipment
 Results and Discussion
  1. Validation of ED-XRF determination
  2. Comparison of the methods for the 238U and 232Thanalysis
 Conclusion
 Acknowledgements
 References

키워드

저자

• Ji-Young Park [ Radiation Biotechnology and Applied Radioiostope Science, University of Science & Technology, Daejeon, Korea; Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Jong-Myoung Lim [ Korea Atomic Energy Research Institute, Daejeon, Korea ] Corresponding author
• Young-Yong Ji [ Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Chung-Sup Lim [ Radiation Biotechnology and Applied Radioiostope Science, University of Science & Technology, Daejeon, Korea; Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Byung-Uck Jang [ Korea Institute of Nuclear Safety, Daejeon, Korea ]
• Kun Ho Chung [ Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Wanno Lee [ Korea Atomic Energy Research Institute, Daejeon, Korea ]
• Mun-Ja Kang [ Korea Atomic Energy Research Institute, Daejeon, Korea ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  방사선방어학회지 [Journal of Radiation Protection and Research]

• 간기

  계간

• pISSN

  2508-1888

• 수록기간

  1976~2026

• 등재여부

  KCI 등재,SCOPUS

• 십진분류

  KDC 559 DDC 629