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Determination of Rare Earth Elements and Yttrium in Nine Geochemical Reference Samples Using a Novel Group Separation Procedure Involving Mixed‐Acid Elution Ion‐Exchange Chromatography
Author(s) -
CROUDACE Ian W.,
MARSHALL Stan
Publication year - 1991
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.1991.tb00106.x
Subject(s) - yttrium , isotope dilution , chemistry , inductively coupled plasma mass spectrometry , elution , rare earth , chromatography , matrix (chemical analysis) , analytical chemistry (journal) , ion exchange , column chromatography , ion chromatography , mass spectrometry , isotope , ion , mineralogy , physics , organic chemistry , quantum mechanics , oxide
Rare earth data for nine well‐known geochemical reference samples were obtained using a rapid and efficient cation exchange chromatographic separation procedure. It involves the use of a mixed‐acid eluent (HCI and HNO3) on a 15 x 1 cm column of Bio‐Rad AG50–X8 (200–400 mesh) to remove matrix and many trace elements from rock solutions. The rare earth elements are removed from the column using 60 ml 7M HNO3. The pre‐concentration procedure described is routinely used in this laboratory for the determination of the rare earth elements by mass spectrometry‐isotope dilution, and has been satisfactorily used for their determination using inductively‐coupled plasma‐source atomic emission spectrometry.