Simultaneous determination of lanthanides by radioisotope x-ray fluorescence spectrometry based on characteristic K-radiation |
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Authors: | J.J. Labrecque P.A. Rosales G. Mejías |
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Affiliation: | Instituto Venezolano de Investigaciones, Científicas (I.V.I.C.), Apartado 1827, Caracas 1020-A Venezuela |
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Abstract: | The use of radiosiotope-induced x-ray fluorescence is examined for the determination of lanthanides via their characteristic K x-ray lines. Various synthetic mixtures of barium and 14 rare-earth elements were prepared and their homogeneity was checked. The intensity from each mixture was measured for 10 min with excitation by the 88-keV γ-ray from a 3.5-mCi cadmium-109 source or by direct β-particles from a 100-μCi promethium-147 source. Typical spectra and their corrected peak intensities are presented. The spectral backgrounds produced by 147Pm and 109Cd are considered. |
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