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Andrey V. Alekseev, Pavel V. Yakimovich
Estimation of uncertainty budgets in analysis of nickel by ICP-MS
and high-resolution mass spectrometry with a glow discharge
Abstract
Abstract.The paper estimates uncertainty budgets in
determining the content of impurities of 15 elements (P, Mn, Fe, Cu, Zn, As,
Se, Ag, Cd, Sn, Sb, Te, Tl, Pb, Bi) in nickel samples by mass spectrometry
inductively coupled plasma (ICP-MS) and high-resolution glow discharge mass
spectrometry (GDMS). Validated by analysis of a certified standard nickel
sample (assessed using Student’s simple t-test). The main sources of
uncertainty in the results of analysis by two methods, including sample
preparation and calibration graph, are presented. Comparison of the total and
expanded uncertainties for the two methods is carried out. The analysis by
ICP-MS and GDMS methods of industrial melting of a nickel alloy of the ZhS6U
type was carried out and the results obtained were compared with the modified
Student’s test.
Key words: inductively coupled plasma mass spectrometry, glow discharge mass
spectrometry, nickel alloys, impurities determination, nickel analysis,
uncertainty budget
Copyright (C) Chemistry Dept., Moscow State University, 2002
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