Arsenic uptake, accumulation and phytofiltration by duckweed (Spirodela polyrhiza L.)

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

	Arsenic uptake, accumulation and phytofiltration by duckweed (Spirodela polyrhiza L.)
	Zhang, Xin ; Hu, Ying ; Liu, Yunxia ; Chen, Baodong
刊名	JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
	2011
卷号	23 期号:4 页码:601—606
关键词	arsenic duckweed phytofiltration Spirodela polyrhiza L.
中文摘要	This study investigates arsenic (As) accumulation and tolerance of duckweed Spirodela polyrhiza L. and its potential for As phytofiltration. S. polyrhiza was able to survive in high concentration of As(V) solution. The EC(50) values (+/- SE) based on the external As(V) were (181.66 +/- 20.12) mu mol/L. It accumulated (999 +/- 95) mg As/kg dw when exposed in 320 mu mol/L As(V) solution for one week, and was able to take up appropriately 400 mg As/kg dw in tissues without a significant biomass loss. The EC(50) values (the effective concentration of As(V) in the nutrient solution that caused a 50% inhibition on biomass production) was (866 +/- 68) mg/kg dw for the tissues, indicating that S. polyrhiza had a high capability of As accumulation and tolerance. The uptake kinetic parameters V(max) was (55.33 +/- 2.24) nmol/(g dw.min) and K(m) was (0.144 +/- 0.011) mmol/L. Within 72 hr, S. polyrhiza decreased As concentration in the solution from 190 to 113 ng/mL with a removal rate of 41%. The study suggested that this floating aquatic plant has some potential for As phytofiltration in contaminated water bodies or paddy soils.
WOS记录号	WOS:000289871300011
公开日期	2012-10-18
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7127]
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	Zhang, Xin,Hu, Ying,Liu, Yunxia,et al. Arsenic uptake, accumulation and phytofiltration by duckweed (Spirodela polyrhiza L.)[J]. JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,2011,23(4):601—606.
APA	Zhang, Xin,Hu, Ying,Liu, Yunxia,&Chen, Baodong.(2011).Arsenic uptake, accumulation and phytofiltration by duckweed (Spirodela polyrhiza L.).JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA,23(4),601—606.
MLA	Zhang, Xin,et al."Arsenic uptake, accumulation and phytofiltration by duckweed (Spirodela polyrhiza L.)".JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA 23.4(2011):601—606.