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Distribution, speciation and availability of antimony (Sb) in soils and terrestrial plants from an active Sb mining area

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成果类型:
期刊论文
作者:
Okkenhaug, Gudny*;Zhu, Yong-Guan;Luo, Lei;Lei, Ming;Li, Xi;Mulder, Jan
通讯作者:
Okkenhaug, Gudny
作者机构:
[Okkenhaug, Gudny; Mulder, Jan] Norwegian Univ Life Sci, Dept Plant & Environm Sci, N-1432 As, Norway.
[Okkenhaug, Gudny] Norwegian Geotech Inst, NO-0806 Oslo, Norway.
[Zhu, Yong-Guan; Li, Xi] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, Dept Soil Environm Sci, Beijing 100085, Peoples R China.
[Luo, Lei] Chinese Acad Sci, Res Ctr Ecoenvironm Sci, State Key Lab Environm Chem & Ecotoxicol, Beijing 100085, Peoples R China.
[Lei, Ming] Hunan Agr Univ, Coll Resource & Environm, Changsha 410128, Hunan, Peoples R China.
通讯机构:
[Okkenhaug, Gudny] Norwegian Univ Life Sci, Dept Plant & Environm Sci, POB 5003, N-1432 As, Norway.
语种:
英文
关键词:
Antimony;Sb mining soil;Ca[Sb(OH)6]2;Sequential extraction;Plant uptake
期刊:
Environmental Pollution
ISSN:
0269-7491
年:
2011
卷:
159
期:
10
页码:
2427-2434
机构署名:
本校为其他机构
院系归属:
资源环境学院
摘要:
Here, we present one of the first studies investigating the mobility, solubility and the speciation-dependent in-situ bioaccumulation of antimony (Sb) in an active Sb mining area (Xikuangshan, China). Total Sb concentrations in soils are high (527-11,798 mg kg<sup>-1</sup>), and all soils, including those taken from a paddy field and a vegetable garden, show a high bioavailable Sb fraction (6.3-748 mg kg<sup>-1</sup>), dominated by Sb(V). Elevated concentrations in native plant species (109-4029 mg kg<sup>-1</sup>) underpin this. Both chemical equilibrium studies and XANES data suggest the presence of Ca[Sb(OH)<inf>6</inf>]<inf>2</inf>, controlling Sb solubility. A very close relationship was found between the citric acid extractable Sb in plants and water or sulfate extractable Sb in soil, indicating that citric acid extractable Sb content in plants may be a better predictor for bioavailable Sb in soil than total acid digestible Sb plant content. &copy;2010 Published by Elsevier Ltd.

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