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Phytoaccumulation of trace elements by wetland plants: I. Duckweed



Phytoaccumulation of trace elements by wetland plants: I. Duckweed



Journal of Environmental Quality 27(3): 715-721



The potential of duckweed (Lemna minor L.) to accumulate cadmium, chromium, copper, nickel, lead, and selenium was examined. The trace elements were supplied individually in a nutrient solution at a series of concentrations ranging from 0.1 mg/l to 10 mg/l. The duckweed proved to be a good accumulator of Cd, Se, and Cu; a moderate accumulator of Cr; and a poor accumulator of Ni and Pb. It displayed some signs of toxicity at higher concentrations of element supply. In descending order of damage, the toxicity effect of each trace element on plant growth was Cu > Se > Pb > Cd > Ni > Cr.

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Accession: 009197559

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DOI: 10.2134/jeq1998.00472425002700030032x


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