Table 2. (Continued) 



Taxonomic group, 



organism, tissue, 



location, and other 

 variables 



Concentration' 

 (ppm) 



Reference 



California, 1977 

 Delaware 



1977 



1978 

 Florida 



1975 



1976 



1977 



1979 

 Louisiana, 1979 

 Maine 



1974 



1975 



1976 



1977 



1978 



1979 

 Maryland 



1973 



1977 



1978 



1979 

 Michigan 



1969 



1974 



1978 

 Minnesota 



1972 



1976 



1977 



1978 



1979 

 New York 



1971 



1977 



1978 

 Ohio, 1976 

 Oregon, 1979 

 Virginia 



1976 



1977 



18 



