RAFAEL CARDOSO BAPTISTINI PESTANA
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Resumo IPEN-doc 24596 The use of SEM-EDX for the identification of uranium compounds in swipe samples for nuclear safeguards2017 - SARKIS, J.E.S.; PESTANA, R.C.B.; MARIN, R.C.; CARVALHO, E.F.U.Environmental swipe sampling for safeguards purposes has been used by International Atomic Energy Agency since 1996 and is a powerful tool to detect undeclared materials and activities in States under safeguards agreements. The Secondary Electron Microscope with Energy-Dispersive X-Ray analyzing system (SEM-EDX) can be particularly useful in the initial identification of uranium in swipe samples and might be appropriate to identify and characterize uranium particles This work describes the use of SEM-EDX, as an initial screening technique, in real-life swipe samples for identifying and characterizing uranium particles. The swipe samples were collected in a conversion plant at the Nuclear and Energy Research Institute – IPEN/CNEN, São Paulo, BrazilResumo IPEN-doc 24595 The use of ICP-MS and LA-ICP-MS techniques for uranium analysis in real-life swipe samples for safeguards purposes2017 - SARKIS, J.E.S.; PESTANA, R.C.B.; MARIN, R.C.; ABREU-JUNIOR, C.H.; CARVALHO, E.F.U.Environmental swipe sampling is a powerful tool to detect undeclared materials and activities in States under safeguards agreements and has been used by the International Atomic Energy Agency since 1996. This work describes the utilization of the inductively coupled plasma mass spectrometry (ICP-MS) and laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) for determining uranium isotopic ratios in a real-life swipe samples collected in a conversion plant at IPEN/CNEN, Brazil. Uncertainties were estimated by following the International Organization for Standardization –Guide to the Expression of Uncertainties in Measurement (ISO GUM), with a confidence level of 95%.Artigo IPEN-doc 19249 The use of SEM-EDX for the identification of uranium compounds in swipe samples for nuclear safeguards2013 - PESTANA, RAFAEL C.B.; SARKIS, JORGE E.S.; MARIN, RAFAEL C.; CARVALHO, ELITA F.U.Artigo IPEN-doc 19248 The use of ICP-MS and LA-ICP-MS techniques for uranium analysis in real-life swipe samples for safeguards purposes2013 - PESTANA, RAFAEL C.B.; SARKIS, JORGE E.S.; MARIN, RAFAEL C.; ABREU JUNIOR, CASSIO H.; CARVALHO, ELITA F.U.Artigo IPEN-doc 19565 New methodology for uranium analysis in swipe samples for nuclear safeguards purposes2013 - PESTANA, RAFAEL C.B.; SARKIS, JORGE E.S.; MARIN, RAFAEL C.; ABREU JUNIOR, CASSIO H.; CARVALHO, ELITA F.U.