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Determination of trace lanthanides in their pure oxides by liquid chromatography-emission spectrometry

✍ Scribed by V. Kubáň; I. Jančářová; V. Otruba; V. Kanický

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
502 KB
Volume
254
Category
Article
ISSN
0003-2670

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✦ Synopsis

Traces of lanthanides can be separated effectively from major lanthanide oxides by liquid chromatography on a column of Separon SGX-C,s silica gel modified by sorption of ammonium dodecylsulphate, and determined by flame -or inductively coupled plasma-atomic emission spectrometry. Spectral interferences from the major component at concentration ratios up to 104-lo6 can be eliminated by isocratic or stepwise pH-gradient elution with ammonium 2-hydroxyisobutyrate. Methods of determining europium, ytterbium and holmium in yttrium, lanthanum and lutetium oxides are described. The flame method is shown to have some advantages.

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