Experimental design technique applied to the validation of an instrumental neutron activation analysis procedure
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2017
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INTERNATIONAL NUCLEAR ATLANTIC CONFERENCE
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In this study optimization of procedures and standardization of Instrumental Neutron Activation Analysis
(INAA) method were carried out for the determination of the elements bromine, chlorine, magnesium,
manganese, potassium, sodium and vanadium in biological matrix materials using short irradiations at a
pneumatic system. 2k experimental designs were applied for evaluation of the individual contribution of selected
variables of the analytical procedure in the final mass fraction result. The chosen experimental designs were the
23 and the 24, depending on the radionuclide half life. Different certified reference materials and multi-element
comparators were analyzed considering the following variables: sample decay time, irradiation time, counting
time and sample distance to detector. Comparator concentration, sample mass and irradiation time were
maintained constant in this procedure. By means of the statistical analysis and theoretical and experimental
considerations, it was determined the optimized experimental conditions for the analytical methods that will be
adopted for the validation procedure of INAA methods in the Neutron Activation Analysis Laboratory (LAN) of
the Research Reactor Center (CRPq) at the Nuclear and Energy Research Institute (IPEN – CNEN/SP).
Optimized conditions were estimated based on the results of z-score tests, main effect, interaction effects and
better irradiation conditions.
Como referenciar
SANTOS, UANDA P. de M. dos; MOREIRA, EDSON G. Experimental design technique applied to the validation of an instrumental neutron activation analysis procedure. 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/123456789/28317. Acesso em: 20 Mar 2026.
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.