Plutonium isotopes in seas around the Korean Peninsula SCIE SCOPUS

Cited 75 time in WEB OF SCIENCE Cited 79 time in Scopus
Title
Plutonium isotopes in seas around the Korean Peninsula
Author(s)
Kim, CK; Kim, CS; Chang, BU; Choi, SW; Chung, CS; Hong, GH; Hirose, K; Igarashi, Y
KIOST Author(s)
Chung, Chang Soo(정창수)
Publication Year
2004-01-05
Abstract
Pu239+240 concentrations and Pu-240/Pu-239 atom ratios in coastal seas adjacent to the Korean Peninsula were determined, during the period 1999 to 2002, to assess the current distribution and to identify sources of Pu isotopes. Pu239+240 concentrations in surface waters ranged from 3.1 to 22.3 mBq m(-3) with higher concentrations in winter than in summer. Pu239+240 concentrations in seawaters around the Korean Peninsula are greater than that in the western North Pacific. Pu-240/Pu-239 atom ratios ranged from 0.18 to 0.33 with an average value of 0.25 +/- 0.03, which is significantly higher than the global fallout average. The Pu-240/Pu-239 atom ratios of the 2000 m deep entire water column in the south western part of the East Sea (Sea of Japan) was comparable to that observed in waters near Bikini Atoll. The higher Pu-240/Pu-239 atom ratios than that of global fallout may be explained by the hypothesis that the earlier input signal of low Pu-240/Pu-239 atom ratio (0.18-0.19) of global fallout plutonium in seas adjacent to the Korean Peninsula is being gradually diluted by the high Pu-240/Pu-239 atom ratio plutonium transported from the tropical Pacific Proving Grounds via prevailing ocean current. (C) 2003 Elsevier B.V. All rights reserved.
ISSN
0048-9697
URI
https://sciwatch.kiost.ac.kr/handle/2020.kiost/5307
DOI
10.1016/S0048-9697(03)00399-1
Bibliographic Citation
SCIENCE OF THE TOTAL ENVIRONMENT, v.318, no.1-3, pp.197 - 209, 2004
Publisher
ELSEVIER SCIENCE BV
Subject
PLASMA-MASS SPECTROMETRY; NUCLEAR TEST-SITE; ENVIRONMENTAL-SAMPLES; ICP-MS; FALLOUT PLUTONIUM; MARINE SAMPLES; NORTH PACIFIC; PU ISOTOPES; RATIOS; JAPAN
Keywords
Pu239+240 concentration; Pu-240/Pu-239 atom ratio; seawater; the Korean Peninsula
Type
Article
Language
English
Document Type
Article
Publisher
ELSEVIER SCIENCE BV
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