Determination of the rare earth elements of rock samples by ICP-MS using different sample decomposition methods
Rare earth elements were determined in 12 international standard reference rock samples using inductively coupled plasma mass spectrometry technique. Aim of this work was to find a relatively simple but reliable decomposition method for the purposes of REE determination. Sample solutions were produc...
Elmentve itt :
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| Dokumentumtípus: | Cikk |
| Megjelent: |
University of Szeged, Department of Mineralogy, Geochemistry and Petrology
Szeged
1997
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| Sorozat: | Acta mineralogica-petrographica
38 |
| Kulcsszavak: | Kőzettan, Ásványtan, Földtan |
| Tárgyszavak: | |
| Online Access: | http://acta.bibl.u-szeged.hu/24854 |
| Tartalmi kivonat: | Rare earth elements were determined in 12 international standard reference rock samples using inductively coupled plasma mass spectrometry technique. Aim of this work was to find a relatively simple but reliable decomposition method for the purposes of REE determination. Sample solutions were produced by different sample decomposition methods: 1. closed vessel decomposition in a microwave digestion oven by different acid mixtures; 2. decomposition by LiBOj fusion in platinum crucibles. Effect of dilution was investigated. Final sample concentration of 0.2 gL' ' was found to be optimal. Indium was used as internal standard. HCI-HNO3-H2F2 digestion followed by an evaporation step was not efficient enough to obtain a total recovery. In the case of digestion with acid mixtures there could occur some recovery problems for the heavy REEs, mainly with the mixture of HCI-HN03-H2F2 which is less aggressive than the H1PO4-HNO3-H2F2 mixture, used alternatively. Fusion with UBO2 is a very simple process used extensively in our laboratory and gave good recovery data. |
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| Terjedelem/Fizikai jellemzők: | 131-149 |
| ISSN: | 0365-8066 |