SANDRA REGINA DAMATTO
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Artigo IPEN-doc 25799 Natural and artificial nuclides in Salesópolis reservoir2019 - SILVA, P.S.C.; SEMMLER, R.; ZAHN, G.S.; ROCHA, F.R.; DAMATTO, S.R.; FAVARO, D.I.T.Natural radioactivity is ubiquitous in the environment mainly due to the presence of the nuclides from the ura-nium and thorium series and 40K. Although in the South Hemisphere nuclear tests have been fewer in number than that in the North, artificial radionuclides can also be found spread at ground level. In this study, the activity concentrations of natural nuclides from the uranium and thorium series, 40K and the artificial 137Cs were deter-mined in a sediment core with 42 cm depth collected in the middle of the Salesópolis reservoir, located in the Metropolitan Region of São Paulo city (SPMR). The Usina Parque Rio Tietê reservoir belongs to the Alto do Tietê system for the capture, storage and treatment of water for SPMR. Therefore, the quality of the water and sediments of this dam is of great importance. The activity concentrations were measured by gamma spectrome-try. Samples were measured and saved at regular intervals at a maximum of 160 000 seconds. The gross area were determined for each peak and plotted against time and the counting rate was obtained by the slope of the curve. Background and reference materials were also counted and treated in the same way. Results showed that 226Ra varied from 45 to 116 Bq kg-1; 228Ra, from 80 to 165 Bq kg-1; 40K, from 155 to 1 187 Bq kg-1 and 137Cs varied from 0.3 to 7 Bq kg-1. The methodology applied for determining low levels of 137Cs in sediment proved to be effi-cient and reproducible.Artigo IPEN-doc 24078 Natural and artificial nuclides in Salesópolis reservoir by gamma spectrometry2017 - SILVA, PAULO S.C.; SEMMLER, RENATO; ZAHN, GUILHERME S.; ROCHA, FLAVIO R.; DAMATTO, SANDRA R.; FAVARO, DEBORAH I.T.Resumo IPEN-doc 21548 Trace elements by neutron activation analysis in three sediments cores from the Alto Tietê River sub-basin, São Paulo-Brazil, dated by 210Pb method2015 - FAVARO, DEBORAH; ROCHA, FLAVIO; DAMATTO, SANDRA R.; WAKASUGI, DENISE; SILVA, PAULO S.Resumo IPEN-doc 20551 Sedimentation rates by sup(210) Pb method and trace elements by INAA in two sediment cores from the Tiete river, São Paulo, Brazil2014 - DAMATTO, SANDRA R.; ROCHA, FLAVIO R.; BAUMGARDT, DAIANE; CASTRO, LUCAS M.; TAPPIZ, BRUNO; SILVA, PAULO S.C. da; FAVARO, DEBORAH I.T.Capítulo IPEN-doc 13895 Sequential determination of U and Th decay series in Santana Cave, Southwest Brazil2008 - SILVA, P.S.C.; DAMATTO, S.R.; MAZZILLI, B.P.Resumo IPEN-doc 17462 Metal distribution in sediment cores from São Paulo state coast, Brazil2011 - SILVA, PAULO S.C.; DAMATTO, SANDRA R.; FAVARO, DEBORAH I.T.; MAZZILLI, BARBARA P.Resumo IPEN-doc 13519 Determination of elementary basal levels in sediments of Baixada Santista, Sao Paulo, Brazil2008 - SILVA, PAULO S.C.; DAMATTO, S.R.; FAVARO, DEBORAH I.T.; MAZZILLI, BARBARA P.Resumo IPEN-doc 13518 Trace elements in sediments from ponds in Pantanal, Matyo Grosso do Sul, Brasil2008 - DAMATTO, SANDRA R.; SILVA, PAULO S.C.; MAZZILLI, BARBARA P.; SAKAMOTO, ARNALDO Y.; FAVARO, DEBORAH I.T.Resumo IPEN-doc 13505 Distribution of radionuclides from U and th series, trace elements and rare earths in bottom sediment samples from Sao Paulo state coast2008 - DAMATTO, S.R.; SILVA, P.S.C.; MAZZILLI, B.P.; FAVARO, D.I.T.Artigo IPEN-doc 10945 Determinacao de elementos terras raras em sedimentos da Salina do Meio, Pantanal da Nhecolandia, MS2005 - FAVARO, D.I.T.; DAMATTO, S.R.; SILVA, P.S.C.; SAKAMOTO, A.Y.; MAZZILLI, B.P.