Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China

doi:10.1016/j.envpol.2015.08.033

CORC > 中国农业科学院 > 农业环境与可持续发展研究所 > 环境修复研究室

	Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China
	Wang, Yanan 1,2; Zeng, Xibai 1; Lu, Yahai 2; Su, Shiming 1; Bai, Lingyu 1; Li, Lianfang 1; Wu, Cuixia 1
刊名	ENVIRONMENTAL POLLUTION
	2015
卷号	207 页码:79-87
关键词	Arsenic (As) Aging process Aging mechanism Chemical kinetic equations
ISSN号	0269-7491
DOI	10.1016/j.envpol.2015.08.033
通讯作者	Wang, Yanan
英文摘要	The effects of aging time and soil parent materials on the bioavailability and fractionations of arsenic (As) in five red soils were studied. The results indicated that As bioavailability in all soils decreased during aging, especially with a sharp decline occurring in the first 30 days. After aging for 360 days, the highest available As concentration, which accounted for 12.3% of the total, was observed in soils derived from purple sandy shale. While 2.67% was the lowest proportion of the available As in soils derived from quaternary red clay. Furthermore, the best fit of the available As changing with aging time was obtained using the pseudo-second-order model (R-2 = 0.939-0.998, P < 0.05). Notably, Al oxides played a more crucial role (R-2 = 0.89, P< 0.05) than did Fe oxides in controlling the rate of As aging. The non-specially and specially absorbed As constituted the primary forms of available As. (C) 2015 Elsevier Ltd. All rights reserved.
学科主题	Environmental Sciences
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000366617500009
内容类型	期刊论文
源URL	[http://111.203.20.206/handle/2HMLN22E/19731]
专题	农业环境与可持续发展研究所_环境修复研究室
作者单位	1.Chinese Acad Agr Sci, Inst Environm & Sustainable Dev Agr, Minist Agr China, Key Lab Agroenvironm, Beijing 100081, Peoples R China 2.China Agr Univ, Coll Resources & Environm Sci, Beijing 100094, Peoples R China
推荐引用方式 GB/T 7714	Wang, Yanan,Zeng, Xibai,Lu, Yahai,et al. Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China[J]. ENVIRONMENTAL POLLUTION,2015,207:79-87.
APA	Wang, Yanan.,Zeng, Xibai.,Lu, Yahai.,Su, Shiming.,Bai, Lingyu.,...&Wu, Cuixia.(2015).Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China.ENVIRONMENTAL POLLUTION,207,79-87.
MLA	Wang, Yanan,et al."Effect of aging on the bioavailability and fractionation of arsenic in soils derived from five parent materials in a red soil region of Southern China".ENVIRONMENTAL POLLUTION 207(2015):79-87.