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2012年 第6卷 第4期

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《环境科学与工程前沿（英文）》 >> 2012年 第6卷 第4期 doi: 10.1007/s11783-012-0394-y

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

1. Demonstration Laboratory of Elements and Life Science Research, College of Life Science, Nanjing Agricultural University, Nanjing 210095, China; 2. Department of Environmental Science and Engineering, College of Resources and Environmental Sciences, Nanjing Agricultural University, Nanjing 210095, China

发布日期： 2012-08-01
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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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