Neutron activation analysis by standard addition and solvent extraction: Determination of impurities in aluminium.
A separation scheme based on selective extraction in conjunction with the standard addition technique has been developed for the determination of impurities in aluminium by neutron activation. Preliminary investigations have been carried out on the extractability of Sc, Co, Hf, Fe, Sn, Cd, Zn, Ag, Cr, Ce, Cs and Rb by TDA and TBP from acidic media. The best conditions are predicted for the separation of these elements into fractions suitable for analysis by gamma-ray spectrometry. Recovery values of approximately 90% were obtained for all the elements.
Alian
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Nuclear Chemistry Department, Atomic Energy Establishment, Inshas, U.A.R.
Haggag
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