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Arsenic uptake, accumulation and phytofiltration by duckweed (Spirodela polyrhiza L.)
文献类型：期刊论文
| 作者 | Zhang, Xin ; Hu, Ying ; Liu, Yunxia ; Chen, Baodong |
| 刊名 | JOURNAL OF ENVIRONMENTAL SCIENCES-CHINA
 |
| 出版日期 | 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 |
| 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. |
入库方式： OAI收割
来源：生态环境研究中心
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