Journal
JOURNAL OF CHROMATOGRAPHY A
Volume 959, Issue 1-2, Pages 163-172Publisher
ELSEVIER
DOI: 10.1016/S0021-9673(02)00447-8
Keywords
alpha-hydroxycarboxylic acids; lanthanides
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The resolution for the three homologues of alpha-hydroxycarboxylic acids viz. lactic acid, alpha-hydroxyisobutyric acid (alpha-HIBA) and alpha-hydroxy-alpha-methylbutyric acid (alpha-H-alpha-MBA), was compared for the individual separation of 14 lanthanide elements under identical experimental conditions. alpha-HIBA was found to be the best for separation of heavier lanthanides (Tb to Lu) while alpha-H-alpha-MBA led to a better separation for lighter lanthanides (La to Eu). All the 14 lanthanides were separated by gradient HPLC employing both alpha-HIBA and alpha-H-alpha-MBA so that there was reasonable resolution among all the peaks and the separation was completed in a short time. (C) 2002 Published by Elsevier Science B.V.
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