Title of article
Determination of 240Pu/239Pu atom ratio in coastal surface seawaters from the western North Pacific Ocean and Japan Sea
Author/Authors
Masatoshi Yamada، نويسنده , , Guang-Jian Zheng، نويسنده ,
Issue Information
روزنامه با شماره پیاپی سال 2008
Pages
5
From page
103
To page
107
Abstract
Surface seawater samples were collected from a site in the vicinity of the nuclear fuel reprocessing facility at Rokkasho, Japan and sites along the Japan Sea coast. 239+240Pu activities and 240Pu/239Pu atom ratios were determined by α-spectrometry and isotope-dilution sector-field ICP-MS. The 240Pu/239Pu atom ratio with the mean value of 0.227±0.006 was significantly higher than the mean global fallout ratio of 0.18. The contribution of the Pacific Proving Grounds close-in fallout was estimated to be 33% of the 239+240Pu.
Keywords
ID-SF-ICP-MS , Nuclear fuel reprocessing facility , Japan Sea , Western North Pacific Ocean , 240Pu/239Pu atom ratio , Close-in fallout
Journal title
Applied Radiation and Isotopes
Serial Year
2008
Journal title
Applied Radiation and Isotopes
Record number
548348
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