JOSIANE SIRQUEIRA SOARES
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Artigo IPEN-doc 28500 Trace and major elements, natural and artificial radionuclides assessment in bottom sediments from Tietê River basin, São Paulo State, Brazil2022 - MAZZILLI, BARBARA P.; LAVIERI, LETICIA G.S.; SOARES, JOSIANE S.; ROCHA, FLAVIO R.; ANGELINI, MATHEUS; FAVARO, DEBORAH I.T.This paper aims at quantifying natural and artificial radionuclides, trace and major elements in sediments collected along the Tietê River basin. The results obtained for Cd, Cr, Cu, Ni and Zn, indicated that the region of “High Tietê” is highly polluted, followed by the region of “Middle Tietê” and the region of “Low Tietê” does not present evidence of contamination. The natural radionuclide concentrations were of the same order of magnitude of world average values and can be defined as basal levels of the region. Cesium-137 activity concentration ranged from 0.22 ± 0.08 Bq kg−1 to 0.96 ± 0.12 Bq kg−1.Resumo IPEN-doc 25012 Metal and trace element assessment in bottom sediments from medium Tietê River Basin, by INAA and ICP OES techniques2017 - ROCHA, FLAVIO R.; ANGELINI, MATHEUS; HENRIQUES, HELOISE R.; SOARES, JOSIANE S.; SILVA, PAULO S.C.; FAVARO, DEBORAH I.T.Artigo IPEN-doc 24729 Metal and trace element assessments of bottom sediments from medium Tietê River basin, Sao Paulo State, Brazil: part II2018 - FAVARO, D.I.T.; ROCHA, F.R.; ANGELINI, M.; HENRIQUES, H.R.A.; SOARES, J.S.; SILVA, P.S.C.; OLIVEIRA, S.M.B.Concentration of metals in 15 bottom sediment samples from Tieteˆ River, a significantly polluted river, were assessed. Total and partial trace element concentrations were determined, and As, Cd, Cr, Cu, Ni and Zn were found above local reference values. These metals were also higher than the threshold effect level (TEL) in some sampling points and Zn was higher than probable effect level (PEL) oriented values in almost all sampling points. The most polluted points were identified from Tieteˆ to Barra Bonita Counties. Regarding sediment quality, this river is still polluted and precautions to minimize environmental problems caused by toxic metals to biota and to human health are necessary.