Plutonium, ¹³⁷Cs and uranium isotopes in Mongolian surface soils

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• 作者：K. Hirose^a ; ^{hirose45037@mail2.accsnet.ne.jp} ; Y. Kikawada^a ; Y. Igarashi^b ; H. Fujiwara^c ; D. Jugder^d ; Y. Matsumoto^a ; T. Oi^a ; M. Nomura^e
• 关键词：239 ; 240Pu ; 238Pu/239 ; 240Pu activity ratio ; 137Cs/239 ; 240Pu activity ratio ; 235U/238U isotope ratio ; Mongolian surface soil ; Migration
• 刊名：Journal of Environmental Radioactivity
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：166
• 期：part_P1
• 页码：97-103
• 全文大小：906 K
• 卷排序：166

文摘

This is a first report of plutonium concentrations in Mongolian surface soils. The plutonium activity concentrations in the Mongolian surface soils ranged from 0.42 ± 0.03 to 3.53 ± 0.09 mBq g−1. 238Pu/239,240Pu and 137Cs/239,240Pu activity ratios reveal that plutonium in the Mongolian surface soils originated from global fallout. Plutonium moves easier than 137Cs in soil column according to chemical migration processes.