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Analysis of Standard Reference Materials for Zr, Nb, Hf and Ta by ICP‐MS after Lithium Metaborate Fusion and Cupferron Separation *
Author(s) -
HALL Gwendy E.M.,
PELCHAT JC.
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.tb00072.x
Subject(s) - lithium (medication) , calibration , analytical chemistry (journal) , inductively coupled plasma mass spectrometry , chemistry , inductively coupled plasma , analyte , mass spectrometry , materials science , chromatography , plasma , medicine , statistics , mathematics , quantum mechanics , endocrinology , physics
Results are presented of the determination of Zr, Nb, Hf and Ta in 74 standard reference materials by inductively coupled plasma mass spectrometry (ICP‐MS). Samples are decomposed by fusion with lithium metaborate and the analytes are separated prior to analysis by precipitation of their cupferrates. Calibration is made using synthetic solutions and internal standardization with Ru (for Zr and Nb) and Re (for Hf and Ta). Accuracy is assessed by comparison with recommended values and precision is evaluated by replicate analyses of five SRMs.