Interlaboratory comparison and optimization of hepatic microsomal ethoxyresorufin O‐deethylase activity in white sucker (Catostomus commersoni) exposed to bleached kraft pulp mill effluent

Abstract Twelve samples of minced liver from white sucker (Catostomus commersoni) were delivered to 14 laboratories in Canada and the United States for the analysis of hepatic ethoxyresorufin O-deethylase (EROD). Samples were collected from a site exposed to bleached kraft pulp mill effluent (BKME) and from a reference site. All laboratories analyzing EROD activity successfully differentiated between effluent exposed fish (high activity) and …