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1988 Compilation of Elemental Concentration Data for USGS Geochemical Exploration Reference Materials GXR‐1 to GXR‐6
Author(s) -
GLADNEY Ernest S.,
ROELANDTS Iwan
Publication year - 1990
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.1990.tb00065.x
Subject(s) - nist , raw data , geological survey , standard deviation , relative standard deviation , chemistry , geology , statistics , computer science , chromatography , mathematics , geophysics , natural language processing , detection limit
Concentration data on 73 individual constituents in United States Geological Survey (USGS) Geochemical Exploration Reference Materials GXR‐1 to GXR‐6 have been collected from 131 journal articles and technical reports. These data are summarized as consensus (mean) values with uncertainties expressed as one standard deviation. Mean values are also calculated as a function of analytical procedure and all raw data are given in the tables. Recommended values are proposed based upon data criteria used by NIST (National Institute of Standards and Technology, formerly the National Bureau of Standards or NBS).