STP1317

    Ecotoxicity of Nitroaromatics to Aquatic and Terrestrial Species at Army Superfund Sites

    Published: Jan 1997


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    Abstract

    Nitroaromatic compounds, including 2,4,6-trinitrotoluene, RDX, HMX, tetryl, and associated degradation products, are released into the environment during the manufacturing, loading, packing, and assembling of munitions at U.S. Army Ammunition Plants. With the exception of 2A46DNT, nitroaromatic compounds are more toxic to fresh-water fishes (LC50s ranging from 0.4–32 mg/L) than to freshwater invertebrates (EC50s ranging from 3–100 mg/L). Rainbow trout are the most sensitive test species with LC50 values ranging from 0.43 to 6.4 mg/L for TNT, RDX, and HMX. These compounds produce negative effects on reproductive endpoints in terrestrial mammals at doses >1 mg/kg/day. Limited data indicate that nitroaromatics are not toxic to terrestrial plants (LOECs ranging from 25–100 νg/g in soil) and soil invertebrates (LOEC of 200 νg/g). Additional studies need to be undertaken to completely characterize the toxicity of these compounds; however, the criteria and screening benchmarks presented in this paper can be used to assess the risks to indigenous flora and fauna at Army Superfund sites.

    Keywords:

    Nitroaromatics, Aquatic toxicity, Water quality criteria, Sediment quality benchmarks, Terrestrial toxicity, Screening benchmarks, Wildlife, Plants, Soil invertebrates


    Author Information:

    Hovatter, PS
    Environmental Toxicologist, Oak Ridge National Laboratory, Oak Ridge, Tennessee

    Talmage, SS
    Environmental Toxicologist, Oak Ridge National Laboratory, Oak Ridge, Tennessee

    Opresko, DM
    Environmental Toxicologist, Oak Ridge National Laboratory, Oak Ridge, Tennessee

    Ross, RH
    Group Leader, Oak Ridge National Laboratory, Oak Ridge, Tennessee


    Paper ID: STP12237S

    Committee/Subcommittee: E47.04

    DOI: 10.1520/STP12237S


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