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Yang B, Zheng J, Yang G, Qin N, Tagami K, Uchida S. Characterization of typical transuranic nuclides in a reference fallout material using SF-ICP-MS. JOURNAL OF ENVIRONMENTAL RADIOACTIVITY 2024; 278:107506. [PMID: 39053127 DOI: 10.1016/j.jenvrad.2024.107506] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/17/2024] [Accepted: 07/21/2024] [Indexed: 07/27/2024]
Abstract
For the quality control in determining transuranic nuclides in fallout samples, this work first reported the 237Np activity concentration in a reference fallout material and further calculated the activity ratios of 237Np/239+240Pu and 237Np/241Am, and the atom ratio of 237Np/239Pu in it. The reference fallout material prepared by the Meteorological Research Institute was collected at 14 stations throughout Japan in 1963-1979. The 237Np and Pu isotopes (239Pu and 240Pu) were separated and purified using AG MP-1M anion-exchange resin, quantified using 242Pu as an isotope dilution tracer, and determined by the SF-ICP-MS. The analytical method was validated by the analysis of 4 sediment reference materials. The activity concentrations of 237Np, 239Pu and 240Pu were (25.9 ± 0.6) × 10-3, 4.10 ± 0.01 and 2.89 ± 0.04 Bq/kg, respectively, in the investigated reference fallout material. The activity ratio of 237Np/239+240Pu (3.7 ± 0.1) × 10-3 was consistent with the global fallout evaluation value. The 237Np/239Pu atom ratio of 0.561 ± 0.014 was higher than the average global fallout value of 0.41 ± 0.010, indicating the necessity of establishing regional characteristic global fallout value of 237Np/239Pu atom ratio for assessment of radioactive contamination. Comparison of the 237Np/239+240Pu activity ratios between in the reference fallout material and in soils over several decades indicated that 237Np has stronger migration capability than Pu isotopes in soils because 237Np was depleted compared to reference fallout material.
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Affiliation(s)
- Bo Yang
- Institute of Radiological Science, National Institutes for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba, 263-8555, Japan; East China University of Technology, No. 418 Guanglan Avenue, Nanchang, Jiangxi, 330013, China
| | - Jian Zheng
- Institute of Radiological Science, National Institutes for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba, 263-8555, Japan.
| | - Guosheng Yang
- Institute of Radiological Science, National Institutes for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba, 263-8555, Japan
| | - Ning Qin
- Institute of Radiological Science, National Institutes for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba, 263-8555, Japan; University of Science and Technology Beijing, Beijing, 100083, China
| | - Keiko Tagami
- Institute of Radiological Science, National Institutes for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba, 263-8555, Japan
| | - Shigeo Uchida
- Institute of Radiological Science, National Institutes for Quantum Science and Technology (QST), 491 Anagawa, Inage, Chiba, 263-8555, Japan
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Xiong K, Bu W, Ni Y, Liu X, Zheng J, Aono T, Yang C, Hu S. Rapid monitoring of 241Am in small amount of sediment samples by combining extraction chromatography for highly efficient separation of interfering and matrix elements and ICP-MS/MS measurement. Microchem J 2023. [DOI: 10.1016/j.microc.2023.108581] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 03/06/2023]
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Wang Z, Zheng J, Cao L, Tagami K, Uchida S. Method for Ultratrace Level 241Am Determination in Large Soil Samples by Sector Field-Inductively Coupled Plasma Mass Spectrometry: With Emphasis on the Removal of Spectral Interferences and Matrix Effect. Anal Chem 2016; 88:7387-94. [DOI: 10.1021/acs.analchem.6b01934] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 02/03/2023]
Affiliation(s)
- Zhongtang Wang
- Biospheric
Assessment for Waste Disposal Team, National Institute of Radiological
Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Jian Zheng
- Biospheric
Assessment for Waste Disposal Team, National Institute of Radiological
Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Liguo Cao
- Biospheric
Assessment for Waste Disposal Team, National Institute of Radiological
Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
- School
of Geographic and Oceanographic Sciences, Nanjing University, Nanjing 210023, China
| | - Keiko Tagami
- Biospheric
Assessment for Waste Disposal Team, National Institute of Radiological
Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
| | - Shigeo Uchida
- Biospheric
Assessment for Waste Disposal Team, National Institute of Radiological
Sciences, National Institutes for Quantum and Radiological Science and Technology, 4-9-1 Anagawa, Inage, Chiba 263-8555, Japan
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