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학술연구/단체지원/교육 등 연구자 활동을 지속하도록 DBpia가 지원하고 있어요.
커뮤니티
연구자들이 자신의 연구와 전문성을 널리 알리고, 새로운 협력의 기회를 만들 수 있는 네트워킹 공간이에요.
초록· 키워드
오류제보하기
A simple and rapid preconcentration method of actinide from seawater using Actinide resin was developed and tested with the seawater spiked with a known U and Th. The developed method of Actinide resin based on column chromatography is less time-consuming and requires less labor compared with a typical co-precipitation technique for preconcentration of actinides. U and Th, which are relatively weak-bonded with Actinide resin among actinides, were used to determine the optimum flow rate of seawater sample and evaluate the capacity of Actinide resin to concentrate actinides from seawater. A flow rate of 50 mL min<SUP>-1</SUP> was available with Actinide resin 2 mL (BV, bed volume). When 5 or 10 L of seawater containing U were loaded on Actinide resin (2 mL, BV) at 50 mL min<SUP>-1</SUP>, the recovery of U was 93 % and 86 %, respectively. For extraction of actinides bound with Actinide resin, we compared three methods: solvent extraction, ashing-acid digestion, and ashing-microwave digestion. Ashing-microwave digestion method shows the best performance of which is the recovery of 100 % for U and 81 % for Th. For the preconcentration of actinides in 200 L of seawater, a typical coprecipitation method requires 2-3 days, but the developed method in this study is achieved the high recovery of actinides within 12 h.
목차
Abstract
1. Introduction
2. Materials and Methods
3. Results and Discussion
4. Conclusions
References
참고문헌 (28)
참고문헌 신청
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TEPCO, ‘Report on Treated Water Disposal’, https://www.tepco.co.jp/en/hd/newsroom/reports/archives/2020/pr20200327-e.html, Accessed 07 May 2020.
C.S. Kim et al., ‘Marine Environmental Radioactivity Survey’, Korea Institute of Nuclear Safety, KINS/ER- 092, 2018.
L. Leon Vintro, P. I. Mitchell, O. M. Condren, A. B. Downes, C. Papucci and R. Delfanti, Sci. Total. Environ., 237-238, 77-91 (1999).
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UCI(KEPA) : I410-ECN-0101-2020-433-001079915