| Popis: |
The spectroscopic determination of rare earth elements (REE's) in geological matrices is generally complicated by the relatively low concentrations of these elements, the high concentrations or matrix elements and their interferences in the analyte determination and a lack of well-defined usable concentration values for reference rock materials, especially at low REE concentrations. This paper describes work being carried out at the Geoscience Laboratories, Ontario Geological Survey, on the determination of Sc, Y, and selected rare earth elements at both high concentration and chondrite levels by inductively coupled plasma optical emission spectrometry. Direct acid digestate solutions (for high concentrations) and ion exchange separated solutions (for chondrite levels) are analyzed by a multichannel ICP spectrometer system: typical results for reference standards and samples are presented and compared. |
