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	Phytoremediation potential of Pteris vittata L. under the combined contamination of As and Pb: beneficial interaction between As and Pb
	Yang J.; Lei M.
	2014
关键词	Arsenic Interaction Lead Mining population Pteris vittata L. Phytoremediation heavy-metal accumulation sedum-alfredii hance arsenic hyperaccumulator nutrient solutions brassica-juncea oxygen-content lead soil tolerance plants
英文摘要	The frequent co-existence of arsenic (As) and lead (Pb) necessitates the investigation of clean-up technologies for multi-metal(loid)s. Field survey and hydroponic experiments were conducted to elucidate the co-accumulation of As and Pb in Pteris vittata L. The P. vittata population isolated from a Pb-Zn mine in Yunnan province, China is a potential extractor of As and Pb co-contamination. Hydroponic experiment found that the highest frond As and Pb concentrations in mining population of P. vittata reached 12.2 and 0.99 g kg(-1), respectively. The interaction between As and Pb in P. vittata was further more disclosed. Pb (2 mg L-1) improved the frond As concentration by 60 to 150 % in mining populations of P. vittata. Micro-X-ray absorption spectroscopy indicated that under the combined exposure of As and Pb, the As content in the rhizoid epidermis increased by about 10-fold, and the As(V) percentage increased in each rhizoid tissue, as compared with that under As exposure alone. The co-absorption of As and Pb on the epidermis and the enhanced transportation of As(V) from epidermis into the rhizoid were suggested to contribute to the increased As accumulation.
出处	Environmental Science and Pollution Research
卷	21
期	1
页	325-336
收录类别	SCI
语种	英语
ISSN号	0944-1344
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/29574]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Yang J.,Lei M.. Phytoremediation potential of Pteris vittata L. under the combined contamination of As and Pb: beneficial interaction between As and Pb. 2014.

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