Observations on overwintering juvenile chinook salmon ( ) exposed to bleached kraft mill effluent in the upper Fraser River, British Columbia

Chlorophenols and chloroguaiacols were quantified in juvenile chinook salmon captured near bleached kraft mills in the upper Fraser River in December 1987. Fish captured in April 1988 showed up to 55-fold induction of hepatic mixed function oxidase activity (EROD), and were contaminated with up to 370 ng·kg⁻¹ of 2,3,7,8-TCDF and 68 ng·kg⁻¹ of 2,3,7,8-TCDD. The implications for the survival of these salmon are uncertain.