The fate of arsenic in contaminated paddy soil with gypsum and ferrihydrite amendments

CORC > 生态环境研究中心 > 中国科学院生态环境研究中心 > 城市与区域生态国家重点实验室

	The fate of arsenic in contaminated paddy soil with gypsum and ferrihydrite amendments
	Chen, Xue-Ping; Zhou, Jingyong; Lei, Yanru; He, Chiquan; Liu, Xiaoyan; Chen, Zheng; Bao, Peng
刊名	INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION
	2015-01
卷号	56 期号:1-4 页码:48-62
关键词	ferrihydrite gypsum arsenic sequential extraction soil remediation
英文摘要	Ferrihydrite and gypsum (CaSO4 center dot 2H(2)O) are two chemicals which were suggested to reduce the bioavailability of arsenic (As) in agricultural field. The efficiency of those chemicals added in the paddy field was investigated by pot culture in this study. The results showed As uptake by rice under ferrihydrite treatment was significantly lower than that in the control (36% in shoot), however, plants grown in gypsum show no significant difference in As content compared with those in the control. Sequential extraction showed that As was mainly adsorbed to amorphous and crystalline hydrous oxide. The addition of gypsum did not change the As fractionation in comparison with the control, which may be due to restrained sulphur (S) reduction by the high microbially reducible Fe(III) (150-250 mg kg(-1)), which precipitates with sulphide in preference to As. These results suggest that the chemical Fe oxides efficiently reduce As risk in the paddy.
研究领域[WOS]	Environmental Sciences
WOS记录号	WOS:000352842300004
公开日期	2016-03-08
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/32395]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Chen, Xue-Ping,Zhou, Jingyong,Lei, Yanru,et al. The fate of arsenic in contaminated paddy soil with gypsum and ferrihydrite amendments[J]. INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION,2015,56(1-4):48-62.
APA	Chen, Xue-Ping.,Zhou, Jingyong.,Lei, Yanru.,He, Chiquan.,Liu, Xiaoyan.,...&Bao, Peng.(2015).The fate of arsenic in contaminated paddy soil with gypsum and ferrihydrite amendments.INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION,56(1-4),48-62.
MLA	Chen, Xue-Ping,et al."The fate of arsenic in contaminated paddy soil with gypsum and ferrihydrite amendments".INTERNATIONAL JOURNAL OF ENVIRONMENT AND POLLUTION 56.1-4(2015):48-62.