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Main Title Effects of Chlorendic Acid, A Priority Toxic Substances, on Laboratory Aquatic Ecosystems.
Author Hendrix, P. F. ; Hamala, J. Z. ; Langner, Christine L. ; Kollig, Heinz P. ;
CORP Author Technology Applications, Inc., Falls Church, VA.;Environmental Research Lab., Athens, GA.
Year Published 1983
Report Number EPA-600/J-83-086;
Stock Number PB84-116490
Additional Subjects Water pollution ; Toxicity ; Marine atmosphere ; Laboratory equipment ; Algae ; Bioassay ; Reprints ; Toxic substances ; Chlorendic acid ; Ecosystems ; Water pollution effects(Plants) ; Water pollution effects(Animals) ; Microcosms
Library Call Number Additional Info Location Last
NTIS  PB84-116490 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 19p
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.