Since the 1970s, the Barcarena region has been receiving enterprises for the processing of aluminum made available by the industries Albras and Alunorte, and kaolin, by the companies Ymeris Rio Capim Caulim (YRCC) and Pará Pigmentos (PPSA). Throughout the area port activities predominate, with intense river traffic of small and large vessels, especially around Vila do Conde (municipality of Barcarena), which is home to oil product deposits, with environmental risk of accidents due to oil spills or leaks. The research proposal applies to the study of the geochemistry of heavy metals (AI,Ba, Cd, Cr, Fe, Cu, Mn, Ni, Pb, Ti, V and Zn), normally present in fuels, in several compartments of Guajará Bay, including the region of Barcarena, Pará State. The Fe and IA elements showed the highest concentration values, ranging from 4279.00 to 27429.0 mg.kg-1 and averaging 15544.6 mg.kg:', for Fe and ranging from 470.10 to 2932.0 mg.kg:' and averaging 2055.7 rog.kg', for IA. The good correlations of the IA and Fe, may be related to the fact that the IA is part of the argillominerals (alumino-silicates) or, possibly by influence of the Port of Vila do Conde and Fe to form oxides and hydroxides, increasing the adsorption power. Through the Cluster analysis, it can be verified that in the bottom sediments Cd and Ba maintain little correlation to the other metals, while the metals Fe, Cu, Cr Ti, Pb and AI showed to have a good correlation. IA shows strong correlations with Pb (0.66); Fe (0.63); and Cu (0.60). However, more significant correlations were established for Fe with Cr (0.75) and Ti with Cr (0.68). Comparing the average concentrations of the metals Ba, Cd, Cr, Ni, Pb, Ve and Zn with the concentrations of metals in sediments of the Barrier Formation and the Continental Crust, lower levels of concentrations were observed, with the exception of Zn, which had an average concentration of 35.11 mg.kg', while the average concentration of metals in the Barrier Formation was 24 mg.kg-1.
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