Toxicity of TNT Wastewater (Pink Water) to Aquatic Organisms.
Annual rept. 15 Apr-31 Dec 75,
STANFORD RESEARCH INST MENLO PARK CALIF
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The acute toxicity was determined of aqueous solutions of a-TNT and 2,4-DNT and three types of TNT wastewater from the Joliet Army Ammunition Plant to the fathead minnow Pimephales promelas and the aquatic invertebrate Daphnia magna. The toxicity tests were conducted on materials that had been adjusted to pH 5, 7, and 9.4 and exposed to ultraviolet light. All tests were conducted under static conditions without aeration. The pH of the material during irradiation had little effect on its toxicity. Ultraviolet irradiation of LAP and condensate wastewater and of alpha-TNT and 2,4-DNT reduced their toxicity. The acute toxicity of benzene and aqueous fractions of nonirradiated wastewater and of 50 photolyzed aqueous solutions of alpha-TNT and 2,4-DNT was also determined. The benzene fractions were more toxic than the aqueous fractions. Evidence was obtained suggesting that alpha-TNT is probably the most toxic ingredient of LAP wastewater. The minnow and Daphnia magna were equally sensitive to 2,4-DNT, but the latter was more tolerant of alpha-TNT.
- Ammunition and Explosives
- Water Pollution and Control