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	Arsenic Uptake from Arsenic-Contaminated Water Using Hyperaccumulator Pteris vittata L.: Effect of Chloride, Bicarbonate, and Arsenic Species
	Lei M.
	2012
关键词	Anion Biomass Chinese brake fern Hydroponics Hyperaccumulation hydroponic conditions alluvial aquifers drinking-water accumulation groundwater soils ferns phytoremediation phytofiltration translocation
英文摘要	High As groundwater normally contained high concentrations of Cl- and HCO (3) (-) . This study examined the effects of Cl-, HCO (3) (-) , and As species on As uptake by hyperaccumulator Pteris vittata. Plants were exposed hydroponically to 5.0 mg/L As(III) or As(V) in the presence of 0, 0.5, 1, 2, 5, 10, and 20 mM of Cl- or HCO (3) (-) for 10 days. Addition of high Cl- concentrations (> 10 mM) slightly inhibited P. vittata growth (biomass), while generally had no significant effect on plant As uptake. High solution pH resulted in reduced plant growth and As uptake, which attributed to the inhibitory effects in HCO (3) (-) treatments with the high pH of the high HCO (3) (-) concentration. It was speculated that addition of HCO (3) (-) (< 20 mM) would have no significant effect on plant growth and As uptake. The inhibitory effect of HCO (3) (-) on As translocation was less apparent in the As(III) solutions than the As(V) solutions. For the high As groundwater with As(III) as the predominant species, high pH, instead of high concentrations HCO (3) (-) and Cl-, was expected to inhibit As uptake. The results suggested that optimum plant growth and maximum As hyperaccumulation could be achieved by adjusting solution pH in the growth media (around 7.2).
出处	Water Air and Soil Pollution
卷	223
期	7
页	4209-4220
收录类别	SCI
语种	英语
ISSN号	0049-6979
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/30869]
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	Lei M.. Arsenic Uptake from Arsenic-Contaminated Water Using Hyperaccumulator Pteris vittata L.: Effect of Chloride, Bicarbonate, and Arsenic Species. 2012.

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