The DOI matches its Crossref record; 1 of the 1 references it cites were found in a registry or an index.
Arsenic Behavior in Paddy Fields during the Cycle of Flooded and Non-flooded Periods
Abstract
The behavior of As in paddy fields is of great interest considering high As contents of groundwater in several Asian countries where rice is the main staple. We determined the concentrations of Fe, Mn, and As in soil, soil water, and groundwater samples collected at different depths down to 2 m in an experimental paddy field in Japan during the cycle of flooded and non-flooded periods. In addition, we measured the oxidation states of Fe, Mn, and As in situ in soil samples using X-ray absorption near-edge structure (XANES) and conducted sequential extraction of the soil samples. The results show that Fe (hydr)oxide hosts As in soil. Arsenic in irrigation waters is incorporated in Fe (hydr)oxide in soil during the non-flooded period, and the As is quickly released from soil to water during the flooded period because of reductive dissolution of the Fe (hydr)oxide phase and reduction of As from As(V) to As(III). The enhancement of As dissolution by the reduction of As is supported by high As/Fe ratios of soil water during the flooded period and our laboratory experiments where As(III) concentrations and As(III)/As(V) ratios in submerged soil were monitored. Our work, primarily based on data from an actual paddy field, suggests that rice plants are enriched in As because the rice grows in flooded paddy fields when mobile As(III) is released to soil water.
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Citations
Cites
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Yamaguchi, N., Nakamura, T., Dong, D., Takahashi, Y., Amachi, S., & Makino, T. (2011) · Chemosphere · doi:10.1016/j.chemosphere.2011.02.044 · Cited by 348
Self-citationComparison of Antimony Behavior with that of Arsenic under Various Soil Redox Conditions
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Self-citationRoot Iron Plaque on Wetland Plants as a Dynamic Pool of Nutrients and Contaminants
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Arsenic in Foodchain and Community Health Risk: A Study in Gangetic West Bengal
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Nath, S., Panda, P., Mishra, S., Dey, M., Choudhury, S., Sahoo, L., & Panda, S. K. (2014) · Plant Physiology and Biochemistry · doi:10.1016/j.plaphy.2014.04.013 · Cited by 131
The dynamics of arsenic in four paddy fields in the Bengal delta
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Determination of the oxidation states of metals and metalloids: An analytical review
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Metadata
- Authors
- Takahashi, Y., Minamikawa, R., Hattori, K. H., Kurishima, K., Kihou, N., & Yuita, K.
- Venue
- Environmental Science & Technology
- Publisher
- American Chemical Society (ACS)
- Published
- 2004-01-17
- Volume
- 38
- Issue
- 4
- Pages
- 1038-1044
- ISSN
- 0013-936X (ISSN-L)
- 1520-5851
- OpenAlex
- W2081715682
- Cited by
- 572
- References
- 1
- FWCI
- 6.04
- Type
- journal article
- Language
- en
- Open access
- closed
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Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
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