“…In fish studies, physiological and biochemical disturbances, such as changes in carbohydrate metabolism, ionic balance, blood cell status, and biotransformation enzyme activities, including mono-oxygenases, have been noted in animals exposed to the effluents of pulp mills (Oikari and Nakari, 1982;Andersson et al, 1987;Soimasuo et al, 1995a). Polycyclic aromatic hydrocarbons (PAHs) are a group of lipophilic chemicals that are ubiquitously present as pollutants in the environment, including air, water, soil, and sediments.…”