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Relative sensitivity coefficients for the analysis of steel by spark-source mass-spectrometry
E Van Hoye1, R Gijbels, F Adams
1Department of Chemistry, Universitaire Instelling Antwerpen, Universiteitsplein l, B-2610 Wilrijk, Belgium.
Abstract:
Quantitative analysis by spark-source mass-spectrometry requires the knowledge of socalled sensitivity coefficients for the elements being determined. Five series of analyses have been carried out on five different steel standard reference materials (NBS-SRM 661-665), using photoplate detection. The relative sensitivity coefficients (S(R)) of Ti, V, Cr, Mn, Co, Ni, Cu, As, Zr, Nb, Mo, Sn, Sb, La, Ta and W were determined vs. iron as an internal standard. The S(R) values were independent of the elemental concentration. A relative standard deviation of about 15% was obtained. The accuracy as confirmed by comparing the results for a pure iron sample with those obtained by neutron-activation analysis was within the same limits.
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