| Autor: |
David Ulfbeck, Tod E. Waight, Joel A. Baker |
| Rok vydání: |
2002 |
| Předmět: |
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| Zdroj: |
Geochimica et Cosmochimica Acta. 66:3635-3646 |
| ISSN: |
0016-7037 |
| DOI: |
10.1016/s0016-7037(02)00921-3 |
| Popis: |
A method has been developed for the rapid chemical separation and highly reproducible analysis of the rare earth elements (REE) by isotope dilution analysis by means of a multiple collector inductively coupled plasma mass spectrometer (MC-ICP-MS). This technique is superior in terms of the analytical reproducibility or rapidity of analysis compared with quadrupole ICP-MS or with thermal ionization mass spectrometric isotope dilution techniques. Samples are digested by standard hydrofluoric–nitric acid–based techniques and spiked with two mixed spikes. The bulk REE are separated from the sample on a cation exchange column, collecting the middle-heavy and light REE as two groups, which provides a middle-heavy REE cut with sufficient separation of the light from the heavier REE to render oxide interferences trivial, and a Ba-free light REE cut. The heavy (Er-Lu), middle (Eu-Gd), and light REE (La-Eu) concentrations are determined by three short (1 to 2 min) analyses with a CETAC Aridus desolvating nebulizer introduction system. Replicate digestions of international rock standards demonstrate that concentrations can be reproduced to |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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Full Text from ScienceDirect