A lagoa de Pituaçu está inserida no Parque Metropolitano de Pituaçu (PMP). Esta recebe efluentes domésticos e pluviais e encontra--se em um processo acelerado de degradação ambiental. O presente trabalho teve como objetivo determinar a concentração de metais (Al, Cu, Fe, Mn, V) METALS CONCENTRATION IN SEDIMENT LAGOON OF METROPOLITAN PARK PITUAÇU, BAHIA/BRAZIL ABSTRACTThe Pituaçu lagoon is part of the Pituaçu Metropolitan Park (PMP). Its receives domestic wastewater and rainwater and is in an accelerated process of environmental degradation. This study aimed to determine the concentration of metals (Al, Cu, Fe, Mn, V) in pond sediments Pituaçu Metropolitan Park, Salvador, Brazil. Seven sampling points were defined. The determination of metals (Al, Cu, Fe, Mn and V) was accomplished using the technique of optical emission spectrometry with inductively coupled plasma (ICP OES). The range of concentrations found were: Al (3,618--27,210 mg kg --1 ); Fe (11,968--122,030 mg kg --1 ); Mn (44.00to 481.50 mg kg --1 ); V (25.00 to 111.50 mg kg --1 ) and Cu (4.05 to 25.50 mg kg --1 ). The order of concentration at various points was Fe> Al>Mn> V> Cu or Fe> Al>Mn = V> Cu, with the highest and lowest concentrations of all metals found in the points P1 and P3, respectively. There was spatial variations in the concentrations of metals, with higher concentrations in sample points with anthropogenic activities (effluents and agricultural activity). This study reports relatively high levels, especially for V, indicating possible need of expand conservation actions or environmental monitoring to avoid accumulation of these metals in toxic levels for water, sediment and its biota.
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