Affiliations: Department of Environmental Sciences, Northeast Normal
University, Changchun 130024, China
Abstract: In general, many pollutants co-exist in natural aquatic ecosystems.
They affect each other and occur different results, such as synergism, addition
and antagonism. So the research at mixtoxicity of contaminants to aquatic
organism is more important than monotoxicity. In this paper, 50% effectual
inhibition concentration 48h EC_50 values of 6 kinds of nitroaromatic compounds
to the green algae, Scenedesmus obliquus, were investigated. Mixtoxic
experiments, in which any combination of 2,4-DNT and other 6kinds of compounds,
indicate: (1) synergisms between 2,4-DNT and 4-NAn, as well as 4-NAnis,
1,4-DNB; (2) antagonisms between 2,4-DNT and 4-NT, as well as 4-NPh, 4-NCB.
Keywords: monotoxicity, mixtoxicity, nitroaromatics, green algae
