Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar
Hu, Pengjie1; Ouyang, Younan2; Wu, Longhua1; Shen, Libo1; Luo, Yongming3; Christie, Peter1; Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. pjhu@issas.ac.cn; lhwu@issas.ac.cn
发表期刊JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
ISSN1001-0742
2015
卷号27页码:225-231
关键词Arsenic Cadmium Dimethylarsinic Acid (Dma) Rice Speciation Water Management
DOI10.1016/j.jes.2014.05.048
产权排序[Hu, Pengjie; Wu, Longhua; Shen, Libo; Christie, Peter] Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China; [Ouyang, Younan] Chinese Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China; [Luo, Yongming] Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
作者部门中科院海岸带环境过程与生态修复重点实验室
英文摘要Pot and field experiments were conducted to investigate the effects of water regimes on the speciation and accumulation of arsenic (As) and cadmium (Cd) in Brazilian upland rice growing in soils polluted with both As and Cd. In the pot experiment constant and intermittent flooding treatments gave 3-16 times higher As concentrations in soil solution than did aerobic conditions but Cd showed the opposite trend. Compared to arsenate, there were more marked changes in the arsenite concentrations in the soil solution as water management shifted, and therefore arsenite concentrations dominated the As speciation and bioavailability in the soil. In the field experiment As concentrations in the rice grains increased from 0.14 to 0.21 mg/kg while Cd concentrations decreased from 0.21 to 0.02 mg/kg with increasing irrigation ranging from aerobic to constantly flooding conditions. Among the various water regimes the conventional irrigation treatment produced the highest rice grain yield of 6.29 tons/ha. The As speciation analysis reveals that the accumulation of dimethylarsinic acid (from 11.3% to 61.7%) made a greater contribution to the increase in total As in brown rice in the intermittent and constant flooding treatments compared to the intermittent-aerobic treatment. Thus, water management exerted opposite effects on Cd and As speciation and bioavailability in the soil and consequently on their accumulation in the upland rice. Special care is required when irrigation regime methods are employed to mitigate the accumulation of metal(loid)s in the grain of rice grown in soils polluted with both As and Cd. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.; Pot and field experiments were conducted to investigate the effects of water regimes on the speciation and accumulation of arsenic (As) and cadmium (Cd) in Brazilian upland rice growing in soils polluted with both As and Cd. In the pot experiment constant and intermittent flooding treatments gave 3-16 times higher As concentrations in soil solution than did aerobic conditions but Cd showed the opposite trend. Compared to arsenate, there were more marked changes in the arsenite concentrations in the soil solution as water management shifted, and therefore arsenite concentrations dominated the As speciation and bioavailability in the soil. In the field experiment As concentrations in the rice grains increased from 0.14 to 0.21 mg/kg while Cd concentrations decreased from 0.21 to 0.02 mg/kg with increasing irrigation ranging from aerobic to constantly flooding conditions. Among the various water regimes the conventional irrigation treatment produced the highest rice grain yield of 6.29 tons/ha. The As speciation analysis reveals that the accumulation of dimethylarsinic acid (from 11.3% to 61.7%) made a greater contribution to the increase in total As in brown rice in the intermittent and constant flooding treatments compared to the intermittent-aerobic treatment. Thus, water management exerted opposite effects on Cd and As speciation and bioavailability in the soil and consequently on their accumulation in the upland rice. Special care is required when irrigation regime methods are employed to mitigate the accumulation of metal(loid)s in the grain of rice grown in soils polluted with both As and Cd. (C) 2014 The Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences. Published by Elsevier B.V.
文章类型Article
资助机构Environmental Sciences & Ecology
收录类别SCI
语种英语
关键词[WOS]ORYZA-SATIVA L. ; SOIL ; CHINA ; PRODUCTIVITY ; EXPOSURE ; FIELDS ; PLANTS ; HUNAN ; LEAD ; IRON
研究领域[WOS]Environmental Sciences & Ecology
WOS记录号WOS:000348825400026
引用统计
被引频次:114[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.yic.ac.cn/handle/133337/8675
专题中国科学院海岸带环境过程与生态修复重点实验室
通讯作者Wu, LH (reprint author), Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China. pjhu@issas.ac.cn; lhwu@issas.ac.cn
作者单位1.Chinese Acad Sci, Inst Soil Sci, Key Lab Soil Environm & Pollut Remediat, Nanjing 210008, Jiangsu, Peoples R China
2.Chinese Natl Rice Res Inst, Hangzhou 310006, Zhejiang, Peoples R China
3.Chinese Acad Sci, Yantai Inst Coastal Zone Res, Yantai 264003, Peoples R China
推荐引用方式
GB/T 7714
Hu, Pengjie,Ouyang, Younan,Wu, Longhua,et al. Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2015,27:225-231.
APA Hu, Pengjie.,Ouyang, Younan.,Wu, Longhua.,Shen, Libo.,Luo, Yongming.,...&lhwu@issas.ac.cn.(2015).Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar.JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,27,225-231.
MLA Hu, Pengjie,et al."Effects of water management on arsenic and cadmium speciation and accumulation in an upland rice cultivar".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 27(2015):225-231.
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