Earticle

초록

영어

Background: Phosphogypsum is material produced as a byproduct in fertilizer industry and is generally used for building materials. This material may contain enhanced radium-226 (226Ra) activity concentration compared to its natural concentration that may lead to indoor radon accumulation. Therefore, an accurate measurement method is proposed in this study to determine 226Ra activity concentration in phosphogypsum sample, considering the potential radon leakage from the sample container. Materials and Methods: The International Atomic Energy Agency (IAEA) phosphogypsum reference material was used as a sample in this study. High-purity germanium (HPGe) gamma spectrometry was used to measure the activity concentration of the 226Ra decay products, i.e. , 214Bi and 214Pb. Marinelli beakers sealed with three different sealing methods were used as sample containers. Due to the potential leakage of radon from the Marinelli beaker (MB), correction to the activity concentration resulted in gamma spectrometry is needed. Therefore, the leaked fraction of radon escaped from the sample container was calculated and added to the gamma spectrometry measured values. Results and Discussion: Total activity concentration of 226Ra was determined by summing up the activity concentration from gamma spectrometry measurement and calculated concentration from radon leakage correction method. The results obtained from 214Bi peak were 723.4 ± 4.0 Bq· kg-1 in MB1 and 719.2 ± 3.5 Bq· kg-1 in MB2 that showed about 5% discrepancy compared to the certified activity. Besides, results obtained from 214Pb peak were 741.9 ± 3.6 Bq· kg-1 in MB1 and 740.1 ± 3.4 Bq· kg-1 in MB2 that showed about 2% difference compared to the certified activity measurement of 226Ra concentration activity. Conclusion: The results show that radon leakage correction was calculated with insignificant discrepancy to the certified values and provided improvement to the gamma spectrometry. Therefore, measuring 226Ra activity concentration in TENORM (technologically enhanced naturally occurring radioactive material) sample using radon leakage correction can be concluded as a convenient and accurate method that can be easily conducted with simple calculation.

목차

ABSTRACT
Introduction
Materials and Methods
1. Phosphogypsum Sample and Sample Container Sealing Methods
2. Measurement Method
Results and Discussion
1. Gamma Spectrometry Results
2. Leakage Correction Method
3. Correction Result
Conclusion
Conflict of Interest
Acknowledgements
Author Contribution
References

키워드

저자

• Sooyeon Lim [ School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu, Korea; Central Research Institute, Korea Hydro & Nuclear Power Co. Ltd., Daejeon, Korea ]
• Nur Syamsi Syam [ School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu, Korea; Directorate of Licensing for Nuclear Installations and Materials, Badan Pengawas Tenaga Nuklir (BAPETEN), Jakarta, Indonesia ] Corresponding Author
• Seongjin Maeng [ School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu, Korea, Radiation Science Research Institute, Kyungpook National University, Daegu, Korea ]
• Sang Hoon Lee [ School of Architectural, Civil, Environmental, and Energy Engineering, Kyungpook National University, Daegu, Korea, Radiation Science Research Institute, Kyungpook National University, Daegu, 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