Chemical Characterisation of the USGS Reference Glasses GSA-1G, GSC-1G, GSD-1G, GSE-1G, BCR-2G, BHVO-2G and BIR-1G Using EPMA, ID-TIMS, ID-ICP-MS and LA-ICP-MS

Autor: Ingrid Raczek, Klaus Peter Jochum, Brigitte Stoll, K. Herwig, Matthias Willbold
Rok vydání: 2005
Předmět:
Zdroj: Scopus-Elsevier
ISSN: 1751-908X
0150-5505
DOI: 10.1111/j.1751-908x.2005.tb00901.x
Popis: The USGS reference glasses GSA-1G, GSC-1G, GSD-1G, GSE-1G, BCR-2G, BHVO-2G and BIR-1G were investigated by different analytical techniques. All these materials have a geological (basaltic) matrix and are therefore useful in igneous geochemistry as matrix-matched reference materials for microanalytical techniques. The new GS glasses have trace elements in groups at concentration levels of about 0.01, 5, 50 and 500 mu g g(-1). Their major element compositions have been determined by EPMA, and trace elements have been analysed by LA-ICP-MS and two isotope dilution techniques using TIMS and ICP-MS. EPMA and LA-ICP-MS analyses indicated that the USGS reference glasses are homogeneous at the mu m to mm scale with respect to major (variations 1-2%) and most trace elements (variations 14%). Trace element data obtained from the different analytical techniques agreed within an uncertainty of 1-5%, indicating that between method results are comparable. Therefore, the preliminary working values for the four USGS GS glasses calculated from these data have a low level of uncertainty.
Databáze: OpenAIRE
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