The use possibility assessment of water lettuce (Pistia stratiotes) and small duckweed (Lemna minor) for the aquatic environment phytoremediation

The use possibility of water lettuce (Pistia Stratiotes) and small duckweed (Lemna Minor) for the aquatic environment phytoremediation from heavy metals is considered in the article. According to the authors' conclusions it is reasonable to use water lettuce for aquatic environment bioremediation at the concentration of copper ions from 0,125 mg, zinc ions from 4 mg, nickel ions from 5 mg on 1 g of plant weight and below. In case with nickel the gender action specificity of this heavy metal on the plant should be also taken into consideration.