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Recebido em 7/6/11; aceito em 10/11/11; publicado na web em 28/2/12 BIOMONITORING OF Cr AND Pb IN FRESHWATER FISH. Trace metal content of three fish species harvested from a tank located in the City of Guarapuava-PR, Brazil were determined by digestion and voltametry. Trace metal content in fish samples were 0.10-1.30 µg/g (muscle) and 0.45-15.90 µg/g (liver) for chromium, 0.35-2.56 µg/g (muscle) and 2.32-34.30 µg/g (liver) for lead. The levels of lead and chromium in fish samples were higherdoi:10.1590/s0100-40422012000500008 fatcat:37pf367tfbg5jm3ceupopm3j6m