Abstract
A procedure was developed for determining ultratrace rare-earth elements in sulfide minerals by inductively coupled plasma mass spectrometry with ion-exchange preconcentration. The concentration factor was 200. The found concentrations of rare-earth elements were 6–30 times lower than those in chondrites. For lanthanum and praseodymium, RSD < 10%; for other rare-earth elements, RSD < 6%. The accuracy of the results was verified by the addition of known amounts of Eu, Tb, Tm, and Lu to a chalcopyrite sample at the stage of decomposition with HCl and HNO3. The calculated yield of rare-earth elements was 94–96%. The detection limit was from 0.06 ng/g (6 × 10–9%) for lutetium to 5 ng/g (5 × 10–7%) for cerium. The procedure was used for the determination of rare-earth elements in chalcopyrites, pyrites, and sphalerites.
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Rimskaya-Korsakova, M.N., Dubinin, A.V. & Ivanov, V.M. Determination of Rare-Earth Elements in Sulfide Minerals by Inductively Coupled Plasma Mass Spectrometry with Ion-Exchange Preconcentration. Journal of Analytical Chemistry 58, 870–874 (2003). https://doi.org/10.1023/A:1025693302964
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DOI: https://doi.org/10.1023/A:1025693302964