||Effects of Chlorendic Acid, A Priority Toxic Substances, on Laboratory Aquatic Ecosystems.
Hendrix, P. F. ;
Hamala, J. Z. ;
Langner, Christine L. ;
Kollig, Heinz P. ;
||Technology Applications, Inc., Falls Church, VA.;Environmental Research Lab., Athens, GA.
Water pollution ;
Marine atmosphere ;
Laboratory equipment ;
Toxic substances ;
Chlorendic acid ;
Water pollution effects(Plants) ;
Water pollution effects(Animals) ;
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Experiments were conducted to estimate the effects of chlorendic acid and its neutralized form on laboratory aquatic ecosystems. In short-term flask studies, chlorendic acid concentrations of 500 mg/L (pH 3.5) completely inhibited algal growth and microfaunal activity, 250 mg/L (pH 4.1) inhibited microfaunal activity and reduced the abundance of all but one algal species, and 125 mg/L (pH 6.6) had no observable effects. Results indicate that the observed effects were due primarily to increases in hydro ion concentration; direct toxicity also may have occurred at low pH where chlorendic acid exists as the unionized species.