Collect. Czech. Chem. Commun. 1980, 45, 715-719

Determination of microquantities of Fe, Mg, Ca, Cu, and Pb in lanthanoid minerals by atomic absorption spectrophotometry

Anna Sopková and Katarína Radváková

Department of Inorganic and Analytical Chemistry, Šafárik Univeristy, 041 67 Košice


The decomposition of two lanthanoid minerals, viz fluorocarbonate bastnasite and phosphate monazite, is described. Iron present in the solution obtained is removed on anion exchanger. Atomic absorption spectrophotometry was applied to the determination of the minor elements present in the mineral, viz. copper, lead, calcium and magnesium. The measurement conditions for the determination of these elements in microquantities were established by using model solutions, and the accuracy and precision of determination were evaluated.