摘要：Lemna gibba and Spirodela polyrhiza were exposed to different concentrations of Ni, Cu, and Cd for 10 days. Bioaccumulation of the three metals for both plants were dependent on and positively correlated with the external metal concentrations. Both plants were hyperaccumulators of Cd but not of Ni or Cu. L. gibba was more effective in extracting all three metals than was S. polyrhiza.
