Determination of Al, Si and P in certified reference materials by instrumental neutron activation analysis
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2017
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
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Resumo
Neutron analysis activation is not commonly used for aluminum, phosphorus and silicon determination, due to
the difficulty to obtain reliable results. In this study, Al was determined by measuring 28Al and the contribution
of P and Si due to 28Al formed in 31P(n,α)28Al and 28Si(n,p)28Al reactions were corrected using correction factors
determined experimentally. Phosphorus was determined by measuring 32P (pure beta emitter) formed in reaction
31P(n,γ)32P. Silicon was determined by epithermal neutron analysis activation (ENAA) and measuring 29Al
radionuclide formed in 29Si(n,p)29Al reaction. Aliquots of certified reference materials (CRMs) and synthetic
standards of the elements were irradiated together, using the pneumatic transfer station of IEA-R1 nuclear
research reactor. Results obtained for biological and geological CRMs showed good precision and accuracy
with |Z-score| < 2 for Al, P and Si determinations. The detection limits for Al, P and Si determinations CRMs
were also evaluated. Results obtained in this study demonstrated the viability of applying INAA procedures in
the determination of Al, P and Si.
Como referenciar
NOYORI, AMANDA; SAIKI, MITIKO. Determination of Al, Si and P in certified reference materials by instrumental neutron activation analysis. In: INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE, October 22-27, 2017, Belo Horizonte, MG. Proceedings... Rio de Janeiro, RJ: Associação Brasileira de Energia Nuclear, 2017. Disponível em: http://repositorio.ipen.br/handle/123456789/28245. Acesso em: 30 Dec 2025.
Esta referência é gerada automaticamente de acordo com as normas do estilo IPEN/SP (ABNT NBR 6023) e recomenda-se uma verificação final e ajustes caso necessário.