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Publications (2)3.92 Total impact

  • Lawrence P. Burkhard, James J. Jenson
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    ABSTRACT: A toxicity identification evaluation (TIE) was performed on a municipal effluent, and three toxicants were identified, ammonia, chlorine, and diazinon. Ammonia and chlorine were the only toxicants present at toxic concentrations in all sample sets, and diazinon was present in toxic concentrations in one of the effluent sample sets. Six effluent sets taken over an 8-month period were evaluated in this TIE. The nonpolar toxicity, primarily due to diazinon, was intermittent since it was present at toxic concentrations only once in the 8-month time period.This report illustrates the types of data and logic used in performing a TIE which contains common municipal toxicants. Emphasis in this report was place on the data needed for generating the weight of evidence in toxicant confirmation, Phase III, to support the suspect toxicants identified in the TIE process. Multiple Phase III manipulations, when applied to numerous effluent samples, provided consistent results for generating the weight of evidence for the confirmation of ammonia and chlorine as the primary causes of toxicity in this effluent.
    Archives of Environmental Contamination and Toxicology 10/1993; 25(4):506-515. DOI:10.1007/BF00214340 · 1.96 Impact Factor
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    ABSTRACT: Toxicity caused by heavy metals in environmental samples can be assessed by performing a suite of toxicity identification evaluation (TIE) methods. The behavior of metals during TIEs can vary greatly according to sample matrix. Some approaches and precautions in using TIE to identify metal toxicants in a sample are discussed, using case studies from three effluent and one sediment TIEs. These approaches include responses of metals that erroneously suggest the presence of other toxicants, the bioavailability of metals retained by glass-fiber filtration, and cautionary steps in Phase III to avoid dilution water effects on sample toxicity.
    Archives of Environmental Contamination and Toxicology 03/1993; 24(3):298-306. DOI:10.1007/BF01128728 · 1.96 Impact Factor