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Type: Artigo
Title: Reference Values Following Iso Guidelines For Frequently Requested Rock Reference Materials
Author: Jochum
Klaus Peter; Weis
Ulrike; Schwager
Beate; Stoll
Brigitte; Wilson
Stephen A.; Haug
Gerald H.; Andreae
Meinrat O.; Enzweiler
Abstract: We present new reference values for nineteen USGS, GSJ and GIT-IWG rock reference materials that belong to the most accessed samples of the GeoReM database. The determination of the reference values and their uncertainties at the 95% confidence level follows as closely as possible ISO guidelines and the Certification Protocol of the International Association of Geoanalysts. We used analytical data obtained by the state-of-the-art techniques published mainly in the last 20 years and available in GeoReM. The data are grouped into four categories of different levels of metrological confidence, starting with isotope dilution mass spectrometry as a primary method. Data quality was checked by careful investigation of analytical procedures and by the application of the Horwitz function. As a result, we assign a new and more reliable set of reference values and respective uncertainties for major, minor and a large group of trace elements of the nineteen investigated rock reference materials.
Subject: Reference Material
Reference Value
Certification Protocol
Rock Reference Materials
Editor: Wiley-Blackwell
Citation: Geostandards And Geoanalytical Research. Wiley-blackwell, v. 40, p. 333 - 350, 2016.
Rights: fechado
Identifier DOI: 10.1111/j.1751-908X.2015.00392.x
Date Issue: 2016
Appears in Collections:Unicamp - Artigos e Outros Documentos

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