globalchange  > 气候减缓与适应
DOI: 10.1016/j.watres.2018.04.034
Scopus记录号: 2-s2.0-85048019385
论文题名:
Arsenic speciation dynamics in paddy rice soil-water environment: sources, physico-chemical, and biological factors - A review
作者: Kumarathilaka P.; Seneweera S.; Meharg A.; Bundschuh J.
刊名: Water Research
ISSN: 431354
出版年: 2018
卷: 140
起始页码: 403
结束页码: 414
语种: 英语
英文关键词: Arsenic accumulation ; Arsenic speciation ; Geogenic arsenic ; Irrigation water ; Metal (hydro)oxides ; Redox chemistry
Scopus关键词: Alkylation ; Biogeochemistry ; Chemical speciation ; Irrigation ; Manganese removal (water treatment) ; Minerals ; Soil moisture ; Arsenic accumulation ; Arsenic speciation ; Geogenic arsenics ; Irrigation waters ; Redox chemistry ; Soil pollution ; arsenic ; biological factor ; dissolved organic matter ; ground water ; manganese oxide ; organic matter ; soil water ; sulfur ; bioaccumulation ; bioavailability ; industrial waste ; irrigation (agriculture) ; methylation ; mineralogy ; mining ; oxidation reduction reaction ; pH ; physical chemistry ; plant yield ; priority journal ; Review ; rice ; soil pollution ; species differentiation ; volatilization
英文摘要: Rice is the main staple carbohydrate source for billions of people worldwide. Natural geogenic and anthropogenic sources has led to high arsenic (As) concentrations in rice grains. This is because As is highly bioavailable to rice roots under conditions in which rice is cultivated. A multifaceted and interdisciplinary understanding, both of short-term and long-term effects, are required to identify spatial and temporal changes in As contamination levels in paddy soil-water systems. During flooding, soil pore waters are elevated in inorganic As compared to dryland cultivation systems, as anaerobism results in poorly mobile As(V), being reduced to highly mobile As(III). The formation of iron (Fe) plaque on roots, availability of metal (hydro)oxides (Fe and Mn), organic matter, clay mineralogy and competing ions and compounds (PO43− and Si(OH)4) are all known to influence As(V) and As(III) mobility in paddy soil-water environments. Microorganisms play a key role in As transformation through oxidation/reduction, and methylation/volatilization reactions, but transformation kinetics are poorly understood. Scientific-based optimization of all biogeochemical parameters may help to significantly reduce the bioavailability of inorganic As. © 2018 Elsevier Ltd
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被引频次[WOS]:236   [查看WOS记录]     [查看WOS中相关记录]
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/112726
Appears in Collections:气候减缓与适应

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作者单位: School of Civil Engineering and Surveying, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, Queensland 4350, Australia; Center for Crop Health, Faculty of Health, Engineering and Sciences, University of Southern Queensland, West Street, Toowoomba, Queensland 4350, Australia; Queen's University Belfast, Institute for Global Food Security, David Keir Building, Malone Road, Belfast, BT9 5BN, United Kingdom; UNESCO Chair on Groundwater Arsenic within the 2030 Agenda for Sustainable Development, University of Southern Queensland, West Street, Toowoomba, Queensland 4350, Australia

Recommended Citation:
Kumarathilaka P.,Seneweera S.,Meharg A.,et al. Arsenic speciation dynamics in paddy rice soil-water environment: sources, physico-chemical, and biological factors - A review[J]. Water Research,2018-01-01,140
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