Journal
GEOSTANDARDS NEWSLETTER-THE JOURNAL OF GEOSTANDARDS AND GEOANALYSIS
Volume 25, Issue 1, Pages 87-125Publisher
GEOSTANDARDS
DOI: 10.1111/j.1751-908X.2001.tb00790.x
Keywords
inductively coupled plasma-mass spectrometry; trace element analysis; geological reference materials; evaluation; reference values; rare earth elements
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Abundances of twenty four trace elements, including Y and fourteen rare earth elements (REE), are reported for eighty six geological reference materials and four proficiency testing samples. Analytical data were obtained by ICP-MS using solution nebulisation after mixed acid digestion (HF-HClO4) under pressure. Analysed samples cover a wide range of element concentrations and mineralogical compositions, including samples for which there are few previously published data. Precision for elemental determinations in nearly 90% of the samples analysed is better than +/- 5%. Accuracy, estimated by comparison with data from compilations is better than +/- 6% for well characterized reference materials. Results obtained for samples that are low in trace elements are often significantly lower than compiled reference values. A critical discussion of the compiled data sets, especially for Y and the REEs, indicates that some reference values seem to be erroneous.
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