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Matrix Effects During SIMS Measurement of the Lithium Mass Fractions of Silicate Glasses: Correction Procedures and Updated Preferred Values of Reference Materials
Author(s) -
De Hoog Jan C. M.
Publication year - 2018
Publication title -
geostandards and geoanalytical research
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.037
H-Index - 73
eISSN - 1751-908X
pISSN - 1639-4488
DOI - 10.1111/ggr.12237
Subject(s) - silicate glass , silicate , lithium (medication) , matrix (chemical analysis) , analytical chemistry (journal) , nist , mineralogy , materials science , ultramafic rock , secondary ion mass spectrometry , mass spectrometry , geology , chemistry , geochemistry , computer science , composite material , environmental chemistry , medicine , organic chemistry , chromatography , endocrinology , natural language processing
This study demonstrates that significant matrix‐dependent bias occurs during the measurement of Li mass fractions by SIMS in silicate glasses. This bias is particularly evident for basaltic and ultramafic samples, where published SIMS data of reference materials show discrepancies up to 40% compared with other measurement techniques. Matrix effects can be successfully corrected by taking into account the SiO 2 content of the analysed material. New matrix‐corrected SIMS data for a suite of silicate glass reference materials are presented (glasses from MPI ‐ DING , USGS , Smithsonian and NIST , with a range of 46–76 g per 100 g SiO 2 ), which are on average within 4% of preferred values ( PV ) as published in the GeoReM database. As several PV for Li in GeoReM are biased by the inclusion of inaccurate SIMS data, updated reference values are proposed that include the new SIMS dataset presented here.