HR: 14:00h
AN: IN33A-08    [Abstracts]
TI: GeoReM Database for Reference Materials of Geological and Environmental Interest: What's new?
AU: * Jochum, K P
EM: kpj@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020, Germany
AU: Nohl, U
EM: nohl@mpch-mainz.mpg.de
AF: Max-Planck-Institut fuer Chemie, Postfach 3060, Mainz, 55020, Germany
AB: Because the analytical data of reference materials (RMs) have significantly increased in recent years, Jochum et al. (2005) developed the geochemical GeoReM database for RMs of geological and environmental interest (http:georem.mpch-mainz.gwdg.de). GeoReM is a relational database and contains published analytical, compilation and certified values (major and trace element concentrations, radiogenic and stable isotope ratios), important metadata about the analytical values, such as uncertainty, uncertainty type, method and laboratory. Sample information and references are also included. At present (March 2007) GeoReM contains ca. 1300 RMs, 11000 analyses and 1600 publications. Five different queries are possible: (1) samples or materials, (2) chemical criteria, (3) bibliography, and recently (4) samples (GeoReM preferred values, GPV), (5) methods or institutions. The GPV and their uncertainties were determined by the GeoReM database group. They are important for calibration purposes and quality control. Criteria are primarily certified data, as well as data from high precision and definitive methods, such as isotope dilution - thermal ionization mass spectrometry. The new query "methods or institutions" provides lists of methods used in selected institutions and lists of institutions using certain techniques. For example, it is possible to list all LA-ICP-MS, SIMS or MC-ICP-MS laboratories stored in GeoReM, and to find out analytical techniques used in selected institutions including detailed information about the elements, the isotope ratios measured and the RMs analyzed. References available in GeoReM and GEOROC (Geochemistry of Rocks of the Oceans and Continents) are now linked to each other (Schramm et al., 2006). It is possible to get information through GEOROC about the geochemical analyses of rock samples belonging to analyses of RMs and isotopic standards compiled in GeoReM. The detailed information of the analytical conditions available in GeoReM enables users of GEOROC to estimate the quality of the analyzed rock samples.
DE: 1040 Radiogenic isotope geochemistry
DE: 1041 Stable isotope geochemistry (0454, 4870)
DE: 1065 Major and trace element geochemistry
SC: Earth and Space Science Informatics [IN]
MN: 2007 Joint Assembly