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The source and reference inventory of 239+240Pu in the soil of China
HUANG Ya-nan, PAN Shao-ming, ZHANG Wei, Stephen G. Tims, LIU Zhi-yong
China Environmental Science ›› 2018, Vol. 38 ›› Issue (12) : 4608-4616.
PDF(2251 KB)
PDF(2251 KB)
The source and reference inventory of 239+240Pu in the soil of China
This study used the large existing database on 137Cs reference inventories, according to the radioactivity ratio of 137Cs/239+240Pu (32.5,137Cs radioactivity is corrected to 2005) in the Northern Hemisphere, and converted 137Cs reference inventories to the corresponding values for 239+240Pu. The 137Cs Reference Inventory Model for Mainland China (137Cs-RI MCM) had been used to establish an analogous, by using Kriging/Cokriging interpolation to simulate the spatial distribution of the Pu-RI in the soils across China. At present, the measured deposition inventories for 239+240Pu range from 7.3 to 546Bq/m2 and Pu-RI simulated values range from 3 to 812Bq/m2. Maxima in the deposition inventory correlated well with those of the Pu-RI simulation, which suggested the 137Cs-RI MCM has potential for the simulation of the Pu-RI in the soils of the mainland of China. In-homogeneity in the atmospheric deposition of 137Cs and 239+240Pu however lead to deviations between the local Pu-RI simulation values and the measured 137Cs/239+240Pu radioactivity ratios present in Chinese soil cores. In order to better illustrate the feasibility of the 137Cs-RI MCM, this study compared theoretical wet deposition inventories of 239+240Pu with the corresponding Pu-RIs in 62 cities of China between latitudes 30~40°N, this showed that the theoretical calculations of Pu-RI or total deposition inventories and wet deposition inventories were reasonable.
239+240Pu / 240Pu/239Pu / Mainland China / Pu-reference inventory / soil / source
[1] Everett S E, Tims S G, Hancock G J, et al. Comparison of Pu and 137Cs as tracers of soil and sediment transport in a terrestrial environment[J]. Journal of Environmental Radioactivity, 2008,99(2):383-393.
[2] Tims S G, Pan S M, Zhang R, et al. Plutonium AMS measurements in Yangtze River estuary sediment[J]. Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms, 2010,268(7/8):1155-1158.
[3] Xu Y H, Qiao J X, Hou X L, et al. Plutonium in soils from northeast China and its potential application for evaluation of soil erosion[J]. Scientific Reports, 2013,3:3506.
[4] Matisoff G, Whiting P J. Measuring soil erosion rates using natural (7Be, 210Pb) and anthropogenic (137Cs,239+240Pu) radionuclides[M]. Handbook of environmental isotope geochemistry. Springer, Berlin, Heidelberg, 2012:487-519.
[5] Zheng J, Yamada M, Wu F C, et al. Characterization of Pu concentration and its isotopic composition in soils of Gansu in northwestern China[J]. Journal of Environmental Radioactivity, 2009, 100(1):71-75.
[6] Lal R, Fifield L K, Tims S G, et al. 239Pu fallout across continental Australia:Implications on 239Pu use as a soil tracer[J]. Journal of Environmental Radioactivity, 2017,178:394-403.
[7] Tims S G, Everett S E, Fifield L K, et al. Plutonium as a tracer of soil and sediment movement in the Herbert River, Australia[J]. Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms, 2010,268(7/8):1150-1154.
[8] Smith B S, Child D P, Fierro D, et al. Measurement of fallout radionuclides, 239,240Pu and 137Cs, in soil and creek sediment:Sydney Basin, Australia[J]. Journal of Environmental Radioactivity, 2016, 151:579-586.
[9] Appleby P G, Haworth E Y, Michel H, et al. The transport and mass balance of fallout radionuclides in Blelham Tarn, Cumbria (UK)[J]. Journal of Paleolimnology, 2003,29(4):459-473.
[10] Hirose K, Igarashi Y, Aoyama M. Analysis of the 50-year records of the atmospheric deposition of long-lived radionuclides in Japan[J]. Applied Radiation and Isotopes, 2008,66(11):1675-1678.
[11] UNSCEAR. Sources, Effects of Ionizing Radiation. In:Unscear, ed. Report to the General Assembly with annex B. New York:United Nations, 2000.
[12] Liu Z Y, Zheng J, Pan S M, et al. Anthropogenic plutonium in the North Jiangsu tidal flats of the Yellow Sea in China[J]. Environmental Monitoring and Assessment, 2013,185(8):6539-6551.
[13] Bu W T, Zheng J, Guo Q J, et al. Vertical distribution and migration of global fallout Pu in forest soils in southwestern China[J]. Journal of Environmental Radioactivity, 2014,136:174-180.
[14] Dong W, Tims S G, Fifield L K, et al. Concentration and characterization of plutonium in soils of Hubei in central China[J]. Journal of Environmental Radioactivity, 2010,101(1):29-32.
[15] Tims S G, Fifield L K, Hancock G J, et al. Plutonium isotope measurements from across continental Australia[J]. Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms, 2013,294:636-641.
[16] Zhang K X,Pan S M, Liu Z Y, et al. Vertical distributions and source identi?cation of the radionuclides 239Pu and 240Pu in the sediments of the Liao River estuary, China[J]. Journal of Environmental Radioactivity, 2018,181:78–84.
[17] 邢闪.长寿命放射性核素239+240Pu和129I在环境中的示踪研究[D]. 西安:中国科学院地球环境研究所, 2015.
[18] 王煜,王卫宪,申茂泉,等.山西,河南三地土壤样品中239+240Pu,137Cs分析[J]. 辐射防护, 2013,33(2):124-128.
[19] Xu Y H, Pan S M, Wu M M, et al. Association of Plutonium isotopes with natural soil particles of different size and comparison with 137Cs[J]. Science of the Total Environment, 2017,581:541-549.
[20] Kelley J M, Bond L A, Beasley T M. Global distribution of Pu isotopes and 237Np[J]. Science of the Total Environment, 1999,237:483-500.
[21] Krey P W, Hardy E P, Pachucki C, et al. Mass isotopic composition of global fallout plutonium in soil[J]. Transuranium Nuclides in the Environment, 1975:671-678.
[22] 黄亚楠,潘少明,刘志勇.中国湖泊柱样沉积物中239+240Pu的来源与分布特征[J]. 地理科学, 2018,38(3):437-447.
[23] Bu W T, Ni Y Y, Guo Q J, et al. Pu isotopes in soils collected downwind from Lop Nor:regional fallout vs. global fallout[J]. Scientific Reports, 2015,5(12262):1-10.
[24] Jin Y R, Zhou G Q, Wang X H, et al. Determination of Plutonium in soil by ICP-MS after CCC preseparation[J]. Journal of Liquid Chromatography Related Technologies, 2003,26(9/10):1593-1607.
[25] 卜文庭,郭秋菊.我国环境土壤和地表水沉积物中Pu的分布特征研究[J]. 辐射防护, 2013,33(3):144-150.
[26] Kim C S, Lee M H, Kim C K, et al. 90Sr, 137Cs, 239+240Pu and 238Pu concentrations in surface soils of Korea[J]. Journal of Environmental Radioactivity, 1998,40(1):75-88.
[27] 倪有意,卜文庭,郭秋菊,等.土壤中钚的迁移行为研究[J]. 辐射防护, 2017,37(1):1-7.
[28] 张威,潘少明,张克新,等.中国大陆Cs-137背景值研究[J]. 地理学报, 2015,70(9):1477-1490.
[29] 董微,杨益隆,郭秋菊.用AMS法测量新疆和湖北两地土壤样品中的钚[J]. 辐射防护, 2010,30(3):175-180.
[30] Pálsson S E, Howard B J, Wright S M. Prediction of spatial variation in global fallout of 137Cs using precipitation[J]. Science of the Total Environment, 2006,367(2/3):745-756.
[31] Michel H, Barci-Funel G, Dalmasso J, et al. Plutonium and americium inventories in atmospheric fallout and sediment cores from Blelham Tarn, Cumbria (UK)[J]. Journal of Environmental Radioactivity, 2002, 59(2):127-137.
[32] Walling D E, He Q. The global distribution of bomb-derived 137Cs reference inventories[J]. Final Report on IAEA Technical Contract, 2000,10361:1-11.
[33] Walling D E, He Q. Improved models for estimating soil erosion rates from cesium-137measurements[J]. Journal of Environmental Quality, 1999,28(2):611-622.
[34] Aoyama M, Hirose K, Igarashi Y. Re-construction and updating our understanding on the global weapons tests 137Cs fallout[J]. Journal of Environmental Monitoring, 2006,8(4):431-438.
[35] Sha L, Yamamoto M, Komura K, et al. 239+240Pu, 241Am and 137Cs in soils from several areas in China[J]. Journal of Radio Analytical and Nuclear Chemistry, 1991,155(1):45-53.
[36] Krey P W. Remote plutonium contamination and total inventories from Rocky Flats[J]. Health Physics, 1976,30(2):209-214.
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