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A Routine Method for Oxide and Hydroxide Interference Corrections in ICP‐MS Chemical Analysis of Environmental and Geological Samples
Author(s) -
Aries Sébastien,
Valladon Michel,
Polvé Mireille,
Dupré Bernard
Publication year - 2000
Publication title -
geostandards newsletter
Language(s) - English
Resource type - Journals
eISSN - 1751-908X
pISSN - 0150-5505
DOI - 10.1111/j.1751-908x.2000.tb00583.x
Subject(s) - hydroxide , inductively coupled plasma mass spectrometry , oxide , polyatomic ion , analytical chemistry (journal) , mass spectrometry , chemistry , isotope , elemental analysis , ion , inorganic chemistry , environmental chemistry , chromatography , physics , organic chemistry , quantum mechanics
Inductively coupled plasma‐mass spectrometry has revolutionized the field of multi‐elemental analysis because of its high sensitivity and speed of analysis. However, problems with polyatomic ion interferences during routine analysis can give rise to inaccuracies. We propose a method that systematically corrects for oxide and hydroxide interferences in routine analysis, for a wide range of materials. Oxide and hydroxide production for a specified element is calculated from measurements on each sample, as levels may depend on sample composition and may also vary with time. We show that oxide and hydroxide interferences can then be calculated for other elements, by reference to a set of oxide and hydroxide ratios measured on standard solutions. Validity of correction is controlled by internal tests involving two isotopes of one element with respect to experimental errors. The limits and validity of this approach are demonstrated with the analysis of selected reference materials.