Winter Third-to Fourth-Instar Larvae of Chironomus plumosus as Bioassay Tools for Assessment of Acute Toxicity of Metals And Their Binary Combinations

摘要

The ecotoxicological effect expressed as mortality of four metal ions(Cd, Cu, Zn, Al)and their associations on winter third-to fourth-instar larvae of Chironomus plumosus was deter- mined. The effect of individual metals was introduced as acute toxicological effect and expressed as LC_50 and LC_95 values with 95/100 intervals of confidence. On the basis of the LC_50 values the toxicity of metals after 96 h treatment was ranked CuCd> Zn>Al. Copper was at least 100 times more toxic than other Metals tested.