DOI: 10.1029/2012JD018485
论文题名: Detection of radioactive 35s at fukushima and other japanese sites
作者: Priyadarshi A. ; Hill-Falkenthal J. ; Thiemens M.H. ; Yoshida N. ; Toyoda S. ; Yamada K. ; Mukotaka A. ; Fujii A. ; Uematsu M. ; Hatakeyama S. ; Noguchi I. ; Nojiri Y. ; Tanimoto H.
刊名: Journal of Geophysical Research Atmospheres
ISSN: 21698996
出版年: 2013
卷: 118, 期: 2 起始页码: 1020
结束页码: 1027
语种: 英语
Scopus关键词: Aerosols
; Air quality
; Boundary layers
; Earthquakes
; Nuclear power plants
; Rain
; Reactor cores
; Air concentrations
; Dry and wet depositions
; Marine boundary layers
; Measurements of
; Model prediction
; Natural backgrounds
; Sampling site
; Sulfate aerosols
; Radioactivity
; aerosol
; atmospheric deposition
; atmospheric plume
; atmospheric pollution
; boundary layer
; concentration (composition)
; nuclear power plant
; numerical model
; radioactivity
; sampling
; seawater
; sulfate
; tsunami
; water pollution
; Japan
英文摘要: The Fukushima nuclear power plant was severely damaged by an earthquake and concomitant tsunami during March 2011. An effect of this disaster was secondary formation of radioactive 35S via the 35Cl(n,p) 35S reaction, when neutrons from the partially melted reactor cores activated the coolant sea water. Here we report the first measurements of 35S in sulfate aerosols and rain water collected at six Japanese sampling sites, Hokkaido, Tsukuba, Kashiwa, Fuchu, Yokohama, and Fukushima, during March-September 2011. The measured 35SO4 2- concentrations in aerosols vary significantly. The Kashiwa (AORI) site shows the highest 35SO4 2- concentration (6.1×10 4±200 atoms/m3) on 1 April 2011, which is nearly 100 times higher than the natural background activity. Considering the percentage loss of 35SO42- resulting from dry and wet deposition and dilution of the radiation plume in the boundary layer during transport, it was determined that the surface air concentration of 35SO42- at the Fukushima would have been 2.8×10 5 atoms/m3 during the week after the earthquake, which is in agreement with the model prediction [Priyadarshi et al., 2011a]. 35SO4 2- activity in rain water collected during March-May 2011 at Tokyo Tech Yokohama varies from 1.1×105 to 9.8×105 atoms/liter, whereas stream water collected near Fukushima was found to have 1.2×105 atoms/liter during April. Even after 6 months, 35SO4 2- activity remains very high (9.9×104±770 atoms/m3) in the marine boundary layer in the Fukushima region, which implies that the reactor core was producing radioactive sulfur. © 2012. American Geophysical Union. Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/63985
Appears in Collections: 影响、适应和脆弱性 气候减缓与适应
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作者单位: Department of Chemistry and Biochemistry, University of California San Diego, 9500 Gilman Drive, San Diego, CA 92093, United States; Department of Environmental Chemistry and Engineering, Tokyo Institute of Technology, Yokohama, Japan; Department of Environmental Science and Technology, Tokyo Institute of Technology, Yokohama, Japan; Atmosphere and Ocean Research Institute, University of Tokyo, Chiba, Japan; Institute of Agriculture, Graduate School of Agriculture, Tokyo University of Agriculture and Technology, Tokyo, Japan; Hokkaido Research Organization, Institute of Environmental Sciences, Sapporo, Japan; National Institute for Environmental Studies, Tsukuba, Japan
Recommended Citation:
Priyadarshi A.,Hill-Falkenthal J.,Thiemens M.H.,et al. Detection of radioactive 35s at fukushima and other japanese sites[J]. Journal of Geophysical Research Atmospheres,2013-01-01,118(2)