GAMMA RAY SPECTROMETRY APPLIED TO THE ANALYSIS OF SEDIMENT CORES FROM PARDO RIVER (SP), BRAZIL
Abstract - The gamma ray spectrometry is an important technique that can directly analyze different radioelements from sediments samples in environmental studies without their complete dissolution. In this study, a gamma spectrometer possessing a NaI(Tl) scintillation detector wasutilized in order to analyze uranium, thorium, and potassium in sediment cores from Pardo River watershed, São Paulo State, Brazil.The sediment profileswere collected along the channel drainage bathing the following cities: Ourinhos, Santa Cruz do Rio Pardo, Águas de Santa Bárbara, Avaré, Botucatu, and Pardinho. Altogether, 46 sediment aliquots weighing between 10.6 and 95.5 g were analyzed, providing a relevant dataset for further engineering applications in that hydrographicbasin.
Keywords - Natural Radioactivity, Gamma Ray Spectrometry, Pardo River Watershed, Brazilian State of São Paulo