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Recebido em 12/2/97; aceito em 29/1/98 HEAVY METALS IN FRESH WATERS FOR EVALUATION OF HYDROGRAPHIC BASINS. The input of heavy metals concentrations determinated by ICP-AES, in samples of the Cambé river basin, was evaluated by using the Principal Component Analysis. The results distinguishes clearly one site, which is strongly influenced by almost all elements studied. Special attention was given to Pb, because of the presence of one battery industry in this area. Some downstream samples weredoi:10.1590/s0100-40421998000500003 fatcat:dob2riqg2bghfczrckrt4jz7wq