INAA methodology using low power reactor for the characterization of IAEA-433; Coastal marine sediment as a potential reference material
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S. Waheed
Summary
As a major requirement for adopting a well-defined quality system for our instrumental neutron activation analysis laboratory regular participation in the IAEA intercomparison exercises is carried out in routine. IAEA marine sediment (IAEA-433) as a proposed reference material has been studied and thirty elements have been determined employing appropriate irradiation, cooling and counting protocols using instrumental neutron activation analysis (INAA) technique. Employing the same protocols on IAEA SL-1 and IAEA 405 certified reference materials the method has been validated and our values show good agreement with the certified values predicting good accuracy. Miniature neutron source research reactor has been utilized for this work. The results for the IAEA-433 present good precision of less than 5% for Mn, Hf, Sm, Th, Al and Fe whereas for Rb, Tb, V, Se, Ga, Sn and Zn results are with comparatively poor precision ranging 10%–13%.
© 2004 Oldenbourg Wissenschaftsverlag GmbH
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Artikel in diesem Heft
- Evidence for the formation of sodium hassate(VIII)
- Study of nitrate complex formation with trivalent Pm, Eu, Am and Cm using a solvent extraction technique
- Hydrolysis of Np(IV) and Pu(IV) and their complexation by aqueous Si(OH)4
- Reduction kinetics of Np(VI) by n-butyraldehyde in tributyl phosphate diluted with n-dodecane
- Speciation study on complex formation of uranium(VI) with phosphate and fluoride at high temperatures and pressures by time-resolved laser-induced fluorescence spectroscopy
- Stability constants of uranium(IV)-α-isosaccharinic acid and gluconic acid complexes
- Uranium(VI) complexes with sugar phosphates in aqueous solution
- Uranium kernel formation via internal gelation
- Investigation of evaporation characteristics of polonium and its lighter homologues selenium and tellurium from liquid Pb-Bi-eutecticum
- Synergistic extraction of Ce(III), Eu(III) and Tm(III) with a mixture of picrolonic acid and tributylphosphine oxide in chloroform
- Synthesis of malonic acid-functionalized Amberlite XAD-4 and its use in solid phase extraction/preconcentrative separation of thorium(IV)
- INAA methodology using low power reactor for the characterization of IAEA-433; Coastal marine sediment as a potential reference material
- Determination of natural radioactivity in building materials used in the Karachi area by γ-ray spectrometry and INAA
- Improved targetry and production of iodine-124 for PET studies
