Vertical distribution and migration of global fallout Pu in forest soils in southwestern China

被引：55

作者：

Bu, Wenting ^{[1
,2
]}

Zheng, Jian ^{[2
]}

Guo, Qiuju ^{[1
]}

Uchida, Shigeo ^{[2
]}

机构：

[1] Peking Univ, Sch Phys, State Key Lab Nucl Phys & Technol, Beijing 100871, Peoples R China

[2] Natl Inst Radiol Sci, Res Ctr Radiat Protect, Inage Ku, Chiba 2638555, Japan

来源：

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY | 2014年 / 136卷

基金：

中国国家自然科学基金;

关键词：

Pu isotopes; Soils; Southwestern China; Downward migration; CDE model; PLUTONIUM; RADIONUCLIDES; CS-137; TRANSPORT; ISOTOPES; DEPTH; SITE; PU-239; PU-240; DEPOSITION; DISPERSION;

D O I：

10.1016/j.jenvrad.2014.06.010

中图分类号：

X [环境科学、安全科学];

学科分类号：

08 ; 0830 ;

摘要：

Soil samples collected in southwestern China were analyzed for Pu isotopes. The Pu-240/Pu-239 atom ratios were around 0.18, which indicated the dominant source of global fallout. Consistent sub-surface maximums followed by exponential decline of 239+240PU activities in the soil cores were observed. Most of the Pu has still remained in the 0-10 cm layers since its deposition. Convection velocities and dispersion coefficients for Pu migration in the soils were estimated by the convection dispersion equation (CDE) model. The effective convection velocities and effective dispersion coefficients ranged from 0.05 to 0.11 cm/y and from 0.06 to 0.29 cm(2)/y, respectively. Other factors that control the vertical migration of Pu in soil besides precipitation, soil particle size distribution and organic matter were suggested. Long-term migration behaviors of Pu in the soils were simulated. The results provide the Pu background baseline for further environmental monitoring and source identification of non-global fallout Pu inputs in the future. (C) 2014 Elsevier Ltd. All rights reserved.

引用

页码：174 / 180

页数：7

共 46 条

[21] Assessment of 137Cs and 239,240Pu Distribution in Forest Soils of the Opole Anomaly [J].

Ziembik, Zbigniew ;

Dolhanczuk-Srodka, Agnieszka ;

Komosa, Andrzej ;

Orzel, Jolanta ;

Waclawek, Maria .

WATER AIR AND SOIL POLLUTION, 2010, 206 (1-4) :307-320

[22] Ten-year trends in vertical distribution of radiocesium in Fukushima forest soils, Japan [J].

Manaka, Takuya ;

Komatsu, Masabumi ;

Sakashita, Wataru ;

Imamura, Naohiro ;

Hashimoto, Shoji ;

Hirai, Keizo ;

Miura, Satoru ;

Kaneko, Shinji ;

Sakata, Tadashi ;

Shinomiya, Yoshiki .

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 2022, 251-252

[23] Analysis of the vertical distribution of 137CS and 239,240PU in waterlogged and non-boggy soils by the sequential extraction method [J].

Kazakeviciute-Jakuciuniene, Laima ;

Tarasiuk, Nikolaj ;

Maceika, Evaldas ;

Druteikiene, Ruta ;

Ezerinskis, Zilvinas ;

Sapolaite, Justina ;

Zukauskaite, Zita ;

Gvozdaite, Rasa .

JOURNAL OF ENVIRONMENTAL RADIOACTIVITY, 2022, 253-254

[24] Vertical Distribution of Mercury in Forest Soils and Its Transfer to Edible Mushrooms in Relation to Tree Species [J].

Pecina, Vaclav ;

Valtera, Martin ;

Travnickova, Gabriela ;

Komendova, Renata ;

Novotny, Radek ;

Brtnicky, Martin ;

Juricka, David .

FORESTS, 2021, 12 (05)

[25] Modeling the vertical distribution of soil organic carbon in temperate forest soils on the basis of solute transport [J].

Yu, Fang ;

Liu, Qiang ;

Fan, Chunnan ;

Li, Shuang .

FRONTIERS IN FORESTS AND GLOBAL CHANGE, 2023, 6

[26] Mapping the spatial distribution of global 137Cs fallout in soils of South America as a baseline for Earth Science studies [J].

Chaboche, Pierre-Alexis ;

Saby, Nicolas P. A. ;

Laceby, J. Patrick ;

Minella, Jean P. G. ;

Tiecher, Tales ;

Ramon, Rafael ;

Tassano, Marcos ;

Cabral, Pablo ;

Cabrera, Mirel ;

da Silva, Yuri Jacques Agra Bezerra ;

Lefevre, Irene ;

Evrard, Olivier .

EARTH-SCIENCE REVIEWS, 2021, 214

[27] Fallout 137Cs, 90Sr and 239+240Pu in soils polluted by heavy metals: Vertical distribution, residence half-times, and external gamma-dose rates [J].

K. Bunzl ;

M. Puhakainen ;

I. Riekkinnen ;

P. Karhu ;

W. Schimmack ;

T. Heikinnen ;

T. Jaakkola ;

V. Nikonov ;

V. Pavlov ;

T. Rahola ;

K. Rissanen ;

M. Suomela ;

M. Tillander ;

M. Äyräs .

Journal of Radioanalytical and Nuclear Chemistry, 2001, 247 :15-24

[28] Simulation of vertical migration behaviors of heavy metals in polluted soils from arid regions in northern China under extreme weather [J].

Xu, Zixin ;

Yin, Ming ;

Yang, Xue ;

Yang, Yong ;

Xu, Xuehui ;

Li, Haigang ;

Hong, Mei ;

Qiu, Guohong ;

Feng, Xionghan ;

Tan, Wenfeng ;

Yin, Hui .

SCIENCE OF THE TOTAL ENVIRONMENT, 2024, 919

[29] Vertical distributions of global fallout 137Cs and 14C in a Japanese forest soil profile and their implications for the fate and migration processes of Fukushima-derived 137Cs [J].

Koarashi, Jun ;

Atarashi-Andoh, Mariko ;

Amano, Hikaru ;

Matsunaga, Takeshi .

JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY, 2017, 311 (01) :473-481

[30] The influence of land use on the concentration and vertical distribution of PBDEs in soils of an e-waste recycling region of South China [J].

Cheng, Zhineng ;

Wang, Yan ;

Wang, Shaorui ;

Luo, Chunling ;

Li, Jun ;

Chaemfa, Chakra ;

Jiang, Haoyu ;

Zhang, Gan .

ENVIRONMENTAL POLLUTION, 2014, 191 :126-131

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