Published 2017 | Version v1
Miscellaneous Open

Determination of Al, Si and P in certified reference materials by Instrumental Neutron Activation Analysis

  • 1. Instituto de Pesquisas Energeticas e Nucleares (IPEN/CNEN-SP), Sao Paulo, SP (Brazil)

Description

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. (author)

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Additional details

Publishing Information

Imprint Pagination
9 p.
Report number
INIS-BR--18301

Conference

Title
International Nuclear Atlantic Conference
Acronym
INAC 2017
Dates
22-27 Oct 2017
Place
Belo Horizonte, MG (Brazil)

INIS

Country of Publication
Brazil
Country of Input or Organization
Brazil
INIS RN
48094717
Subject category
S37: INORGANIC, ORGANIC, PHYSICAL AND ANALYTICAL CHEMISTRY;
Resource subtype / Literary indicator
Conference
Quality check status
Yes
Descriptors DEI
ACCURACY; ALUMINIUM; CALIBRATION STANDARDS; CONCENTRATION RATIO; NEUTRON ACTIVATION ANALYSIS; PHOSPHORUS; QUALITY CONTROL; SILICON;
Descriptors DEC
ACTIVATION ANALYSIS; CHEMICAL ANALYSIS; CONTROL; DIMENSIONLESS NUMBERS; ELEMENTS; METALS; NONDESTRUCTIVE ANALYSIS; NONMETALS; SEMIMETALS; STANDARDS;