Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation
文献类型：SCI/SSCI论文
| 作者 | Lei M. |
| 发表日期 | 2008 |
| 关键词 | arsenic (As) cadmium (Cd) Chinese brake (Pteris vittata L.) hyperaccumulator phytoremediation tolerance uptake thlaspi-caerulescens heavy-metals soil zinc populations copper plant lead |
| 英文摘要 | Field investigation and greenhouse experiments were conducted to study the tolerance of Pteris vittata L. (Chinese brake) to cadmium (Cd) and its feasibility for remediating sites co-contaminated with Cd and arsenic (As). The results showed that R vittata could survive in pot soils spiked with 80 mg/kg of Cd and tolerated as great as 301 mg/kg of total Cd and 26.8 mg/kg of diethyltriaminepenta acetic acid (DTPA)-extractable Cd under field conditions. The highest concentration of Cd in fronds was 186 mg/kg under a total soil concentration of 920 mg As/kg and 98.6 mg Cd/kg in the field, whereas just 2.6 mg/kg under greenhouse conditions. Ecotypes of R vittata were differentiated in tolerance and accumulation of Cd, and some of them could not only tolerate high concentrations of soil Cd, but also accumulated high concentrations of Cd in their fronds. Arsenic uptake and transportation by P. vittata was not inhibited at lower levels (<= 20 mg/kg) of Cd addition. Compared to the treatment without addition of Cd, the frond As concentration was increased by 103.8% at 20 mg Cd/kg, with the highest level of 6434 mg/kg. The results suggested that the Cd-tolerant ecotype of P. vittata extracted effectively As and Cd from the site co-contaminated with Cd and As, and might be used to remediate and revegetate this type of site. |
| 出处 | Journal of Environmental Sciences-China |
| 卷 | 20 |
| 期 | 1 |
| 页 | 62-67 |
| 收录类别 | SCI |
| 语种 | 英语 |
| ISSN号 | 1001-0742 |
| 源URL | [http://ir.igsnrr.ac.cn/handle/311030/22742]  |
| 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.. Potential of Pteris vittata L. for phytoremediation of sites co-contaminated with cadmium and arsenic: The tolerance and accumulation. 2008. |
入库方式： OAI收割
来源：地理科学与资源研究所
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