This paper contains the results of an extensive isotopic study of United States Geological Survey GSD-1G and MPI-DING reference glasses. Thirteen different laboratories were involved using high-precision bulk (TIMS, MC-ICP-MS) and microanalytical (LA-MC-ICP-MS, LA-ICP-MS) techniques. Detailed studies were performed to demonstrate the large-scale and small-scale homogeneity of the reference glasses. Together with previously published isotopic data from ten other laboratories, preliminary reference and information values as well as their uncertainties at the 95% confidence level were determined for H, O, Li, B, Si, Ca, Sr, Nd, Hf, Pb, Th and U isotopes using the recommendations of the International Association of Geoanalysts for certification of reference materials. Our results indicate that GSD-1G and the MPI-DING glasses are suitable reference materials for microanalytical and bulk analytical purposes. Ce document contient les résultats d'une importante étude isotopique des verres de référence USGS GSD-1G et MPI-DING. Treize laboratoires différents ont participé au travers de techniques analytiques de haute précision travaillant soit sur échantillon total (TIMS, MC-ICP-MS) soit par microanalyse «in situ» (LA-MC-ICP-MS, LA-ICP-MS).
ASJC Scopus subject areas
- Geochemistry and Petrology