Enhanced phytoextraction of chromium by the aquatic macrophyte Potamogeton pusillus in presence of copper.
Enhanced phytoextraction of chromium by the aquatic macrophyte Potamogeton pusillus in presence of copper.
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DOI：
10.1016/j.envpol.2011.09.032
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发表时间：
2012-02
影响因子：
8.9
通讯作者：
M. Monferrán;M. L. Pignata;D. Wunderlin
中科院分区：
文献类型：
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作者：
M. Monferrán;M. L. Pignata;D. Wunderlin
通过15 d的植物浸提实验，研究了水生植物-微小眼子菜（Potamogeton pusillus）对水中Cu 2+和Cr+6的去除效果。结果表明，微小拟杆菌能够从单独的溶液（Cu 2+或Cr+6）中积累大量的Cu和Cr。金属去除和生物积累之间的显着相关性。根和叶对Cu和Cr的积累量最高，茎次之。Cu的存在显著增强了Cr的生物富集，对Cr+6的去除具有协同效应，为去除受污染的含水层中的这些金属提供了一种很好的替代方案。据我们所知，这是第一次报道在Cu+2存在的情况下增强植物提取Cr+6和这些重金属的生物富集。
The aquatic macrophyte, Potamogeton pusillus was evaluated for the removal of Cu2+and Cr+6from aqueous solutions during 15 days phytoextraction experiments. Results show that P. pusillus is capable of accumulating substantial amount of Cu and Cr from individual solutions (either Cu2+or Cr+6). Significant correlations between metal removal and bioaccumulation were obtained. Roots and leaves accumulated the highest amount of Cu and Cr followed by stems. The bioaccumulation of Cr was significantly enhanced in the presence of Cu, showing a synergic effect on Cr+6removal, presenting a good alternative for the removal of these metals from polluted aquifers. To the extent of our knowledge, this is the first report on both enhanced phytoextraction of Cr+6in presence of Cu+2and bioaccumulation of these heavy metals by P. pusillus.