ENVIRONMENTAL IMPLICATIONS 173 



necessary tactic is to use certain components from each of the two 

 approaches. 



Testing complex mixtures, coupled with chemical fractionation, 

 allows us to determine acute toxicity and also to identify active 

 components of the effluent. Investigations of individual compounds 

 can be made manageable by grouping the compounds on the basis of 

 chemical structure. 



ACKNOWLEDGMENT 



The research reported here was sponsored by the Division of 

 Biomedical and Environmental Research, U. S. Department of 

 Energy, under contract W-7405-eng-26 with Union Carbide Corpora- 

 tion. Environmental Sciences Division Publication No. 1194, Oak 

 Ridge National Laboratory. 



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