The possibility of application of the radioactive source excited X-ray fluorescence analysis for titanium and iron determination
in kaolins to the routine test of the refinement process has been studied. The iron content can be determined with a simple
counting system using a single-channel pulse height analyser, argon filled proportional counter and109Cd source of 3 mCi for the excitation of K Fe rays. The samples were analysed both as pellets and powders. The iron content
ranged from 0.2–2.5% and titanium from 0.1–0.64%. For simultaneous determination of titanium and iron a Si(Li) spectrometer
has been used. The238Pu source has been used for K Fe and K Ti excitation. It is the most convenient source for simultaneous determination of titanium
and iron.55Fe is the most efficient source for the determination of titanium alone. The best values of precision and determination limit
have been achieved for iron with238Pu and for titanium with55Fe.