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Sediment samples from a major Manaus stream (Igarape do Quarenta – IQ40) were collected from nine sites in the Manaus Industrial District (AM-Brazil) in order to be submitted to a sequential chemical extraction for the partitioning of heavy metals (Cu, Co, Cr, Mn, Fe, Zn, Pb and Ni). The samples were treated with solutions of several different pH, and the contents of the metals were determined by flame atomic absorption spectrometry (FAAS). Findings show Fe, Cu and Zn to be associated to sulfides, carbonates and organic fractions. DOI: 2446941601022015055

Sediment-distributed metal from the Manaus Industrial District (MID) Region (AM - Brazil)