JOSIANE SIRQUEIRA SOARES
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Artigo IPEN-doc 28500 Trace and major elements, natural and artificial radionuclides assessment in bottom sediments from TietĆŖ River basin, SĆ£o 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 TietĆŖ River basin. The results obtained for Cd, Cr, Cu, Ni and Zn, indicated that the region of āHigh TietĆŖā is highly polluted, followed by the region of āMiddle TietĆŖā and the region of āLow TietĆŖā 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 0.22āĀ±ā0.08 Bq kgā1 to 0.96āĀ±ā0.12 Bq kgā1.