Determination of lanthanum and rare earth elements in bovine whole blood reference material by ICP-MS after coprecipitation preconcentration with heme-iron as coprecipitant

Citation
E. Fujimori et al., Determination of lanthanum and rare earth elements in bovine whole blood reference material by ICP-MS after coprecipitation preconcentration with heme-iron as coprecipitant, FRESEN J AN, 363(3), 1999, pp. 277-282
Citations number
24
Categorie Soggetti
Spectroscopy /Instrumentation/Analytical Sciences
Journal title
FRESENIUS JOURNAL OF ANALYTICAL CHEMISTRY
ISSN journal
09370633 → ACNP
Volume
363
Issue
3
Year of publication
1999
Pages
277 - 282
Database
ISI
SICI code
0937-0633(199902)363:3<277:DOLARE>2.0.ZU;2-X
Abstract
An analytical method for the determination of lanthanide elements in the bo vine whole blood reference material (IAEA A-13) has been investigated by in ductively coupled plasma mass spectrometry (ICP-MS). The bovine whole blood reference material was digested with HNO3 and HClO4, and then the pH of th e digested solution was adjusted to 12 with 3 M sodium hydroxide aqueous so lution. In this experimental procedure, lanthanide elements in the blood sa mple were coprecipitated with iron mainly derived from heme-iron in blood i tself. In order to minimize matrix effects due to iron, excess iron in the analysis solution was removed by solvent extraction using methyl isobutyl k etone (MIBK) prior to the determination of lanthanide elements by ICP-MS. T he recoveries of all lanthanide elements were almost quantitative in the re covery test. In consequence, it has been found that all lanthanide elements in bovine whole blood reference material are at the wide concentration ran ge of 0.90 pg/g for Tm similar to 1880 pg/g for Ce.