Phytoremediation of polluted waters potentials and prospects of wetland plants
文献类型：会议论文
| 作者 | Wang, Q; Cui, Y; Dong, Y |
| 出版日期 | 2002 |
| 会议名称 | Meeting on Phytoremediation |
| 会议日期 | MAY, 2001 |
| 会议地点 | LEIPZIG, GERMANY |
| 英文摘要 | To investigate the possible use of plants to remediate polluted waters, a pot experiment was carried out in the laboratory with five wetland plant species, i.e., sharp dock (Polygonum amphibium L.), duckweed (Lemna minor L.), water hyacinth (Eichhornia crassipes), water dropwort [Oenathe javanica (BL.) DC.] and calamus [Lepironia articulata (RETZ.) DOMIN]. Nitrogen (N), phosphorus (P) and three heavy metals, cadmium (Cd), mercury (Hg) and lead (Pb), were the objects of remediation. Sharp dock was found to be a good accumulator of N and P. Indeed, on a dry weight basis the shoots of sharp dock accumulated up to 6.4% of N and 1.1 % of P with BCF (bioconcentration factor) values of 2235 and 1568, respectively. Water hyacinth and duckweed strongly accumulated Cd with concentrations of 462 and 14200 mg/kg, respectively, and BCF values of 1225 and 2567, respectively. Water dropwort achieved the highest concentrations of Hg, i.e., 1.2 mg/kg with a BCF value of 807, whereas calamus achieved the highest concentrations of Pb, i.e., 512.4 mg/kg in its roots with a BCF value of 1217. Thus, it could be concluded that the above plant species are good candidates for phytoremediation of polluted waters, as follows: sharp dock through accumulation of N and P in its shoots, water hyacinth and duckweed as hyperaccumulators of Cd, water dropwort as an hyperaccumulator of Hg and calamus as an hyperaccumulator of Pb. |
| ISSN号 | 0138-4988 |
| 源URL | [http://ir.rcees.ac.cn/handle/311016/24805]  |
| 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 | Wang, Q,Cui, Y,Dong, Y. Phytoremediation of polluted waters potentials and prospects of wetland plants[C]. 见:Meeting on Phytoremediation. LEIPZIG, GERMANY. MAY, 2001. |
入库方式： OAI收割
来源：生态环境研究中心
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