title: Determination of aluminium, silicon and magnesium in geological matrices by delayed neutron activation analysis based on k0 instrumental neutron activation analysis.
abstract: In this work, concentrations of silicon, aluminium and magnesium in geological matrices were determined by Neutron Activation Analysis based on k0-IAEA software. The optimum activation and delay times were found to be 5 min and 15-20 min respectively for the determination of Si via (29)Si (n,p) (29)Al reaction. The adopted irradiation scheme did not work for the determination of magnesium. Each sample was irradiated under a thermal neutron flux density of 5.0 × 10(11) ncm(-2)s(-1). Cadmium covered activation indicated that a permanent epithermal irradiation site for research reactors would be very useful for routine determination of silicon in environmental samples.
authors.affiliation: Nuclear Reactors Research Centre, N.N.R.I., Ghana Atomic Energy Commission, Box LG 80, Legon-Accra, Ghana; Graduate School of Nuclear and Allied Sciences, Department of Nuclear sciences and applications, University of Ghana, P.O. Box AE1, Atomic, Accra, Ghana. Electronic address: baidooisaac51@yahoo.co.uk.
authors.forename: I K
authors.initials: IK
authors.lastname: Baidoo
authors.forename: S B
authors.initials: SB
authors.lastname: Dampare
authors.forename: N S
authors.initials: NS
authors.lastname: Opata
authors.forename: B J B
authors.initials: BJ
authors.lastname: Nyarko
authors.forename: E H K
authors.initials: EH
authors.lastname: Akaho
authors.forename: R E
authors.initials: RE
authors.lastname: Quagraine
keywords: Aluminium; Geological matrix; INAA; Magnesium; Silicon; k(0)-IAEA software