Iron oxidation-reduction and its impacts on cadmium bioavailability in paddy soils: a review

被引：0
作者：
Chunhua Zhang
Ying Ge
Huan Yao
Xiao Chen
Minkun Hu
机构：
[1] Nanjing Agricultural University,Demonstration Laboratory of Elements and Life Science Research, College of Life Science
[2] Nanjing Agricultural University,Department of Environmental Science and Engineering, College of Resources and Environmental Sciences
来源：
Frontiers of Environmental Science & Engineering | 2012年 / 6卷
关键词：
paddy soil; redox; iron; cadmium; bioavailability; rice;
D O I：
暂无
中图分类号：
学科分类号：
摘要：
Redox conditions in paddy soils may vary as they are submerged and drained during rice growth. This change may bring about reductive dissolution of iron (Fe) oxides and subsequent formation of secondary Fe-bearing minerals in rice paddies. The mobility and bioavailability of metal contaminants such as cadmium (Cd) in paddy soils are closely related to the chemical behaviors of Fe. Therefore, in this paper, advances in the study of paddy Fe redox transformations and their effects on Cd availability to rice are briefly reviewed. Current concepts presented in this review include the forms of Fe in paddy soils, the reactions involved in Fe oxidation-reduction, chemical factors affecting Fe redox processes, Cd availability to rice and the impacts of Fe transformation on Cd uptake and translocation in rice. Prospects for future research in this area are also discussed.
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页码：509 / 517
页数：8
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