Dietary uptake in pike (esox lucius) of some polychlorinated biphenyls, polychlorinated naphthalenes and polybrominated diphenyl ethers administered in natural diet

摘要

The dietary uptake of 12 halogenated diaromatic compounds was studied using northern pike (Esox lucius L.) fed with rainbow trout (Oncorhynchus mykiss (Walbaum)). Before the trout were fed to the pike, they had been injected with a cocktail of five polychlorinated biphenyls, four polychlorinated naphthalenes, and three polybominated diphenyl ethers dissolved in rainbow trout lipid. The reported uptake efficiencies (E) were in the range 35 to 90/100 and differ in some respect from earlier studies. The E-values for those substances with effective cross sections (ECS)＞9.5 A were considerably higher than expected if the membrane Permeation at dietary uptake was restricted as proposed previously in the literature.