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Plutonium fallout reconstructed from an Antarctic Plateau snowpack using inductively coupled plasma sector field mass spectrometry

Cited 1 time in wos
Cited 1 time in scopus
Title
Plutonium fallout reconstructed from an Antarctic Plateau snowpack using inductively coupled plasma sector field mass spectrometry
Other Titles
고분해능 유도결합 플라즈마 질량분석기를 이용한 남극 고원 스노우팩의 플루토늄 낙진기록 복원
Authors
Hwang, Heejin
Hur, Soon Do
Lee, Jeonghoon
Han, Yeongcheol
Hong, Sungmin
Motoyama, Hideaki
Subject
Environmental Sciences & Ecology
Keywords
Antarctic snowAtmospheric nuclear testDome FujiIce coreRadionuclide
Issue Date
2019-06
Citation
Hwang, Heejin, et al. 2019. "Plutonium fallout reconstructed from an Antarctic Plateau snowpack using inductively coupled plasma sector field mass spectrometry". SCIENCE OF THE TOTAL ENVIRONMENT, 669(1): 505-511.
Abstract
Anthropogenic plutonium (Pu) in the environment is a result of atmospheric nuclear testing during the second half of the 20th century. In this work, we analyzed a 4-meter deep Antarctic Plateau snowpack characterized by a lowsnowaccumulation rate and negligible snowimpurities. These sample conditions enabled us to measure the snowpack Pu fallout by applying inductively coupled plasma sector field mass spectrometry to a few mL of snow melt without purification or preconcentration. Pu concentrations in the reconstructed Pu fallout record for the period after 1956 CE increased and decreased in agreement with past atmospheric nuclear testing. Two peaks and two dips associable with historical events were observed, and the highest peak in 1964(±1) CE approximately coincided with the maximum concentration of non-sea-salt sulfate caused by the Mt. Agung eruption in 1963 CE. Enhanced Pu fallout in the 1970s was attributed the geographical proximity of the Southern Hemispheric nuclear test sites. Our results suggest that by improving the instrumental sensitivity and precision, the potential of the Antarctic ice sheet as an archive of Pu fallout can be further explored and utilized for understanding atmospheric dispersion and for dating ice cores.
URI
https://repository.kopri.re.kr/handle/201206/10896
DOI
http://dx.doi.org/10.1016/j.scitotenv.2019.03.105
Type
Article
Station
해당사항없음
Indexed
SCI
Appears in Collections  
2018-2018, Reconstruction of past climate and environmental changes using high resolution ice core records in Victoria Land, Antarctica (18-18) / Hur, Soon Do (PE18040)
2017-2018, Reconstruction of past climate and environmental changes using high resolution ice core records in Victoria Land, Antarctica (17-18) / Hur, Soon Do (PE17040; PE18040)
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