MULTIVARIATE CALIBRATION IN SPECTROSCOPY APPROACHING THE LIMITS OF DETECTION

A complete error model for (locally) linear systems is outlined that was recently introduced[7]. It takes into account errors of concentration values in standards, errors in measurements of standards and errors in measurements of unknowns. It is applied to the analysis of bauxites and of high purity...

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Published inAnalytical Sciences Vol. 7; no. Supple; pp. 725 - 731
Main Authors WEGSCHEIDER, WOLFHARD, BAUER, GOTTFRIED, KARPATI, PETER, ORTNER, HUGO M.
Format Journal Article
LanguageEnglish
Published The Japan Society for Analytical Chemistry 1991
Subjects
bauxite
detection limit
error
inductively coupled plasma
Kálmán filter
multivariate calibration
optical emission spectrometry
tungsten
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Summary:A complete error model for (locally) linear systems is outlined that was recently introduced[7]. It takes into account errors of concentration values in standards, errors in measurements of standards and errors in measurements of unknowns. It is applied to the analysis of bauxites and of high purity tungsten. This error model can also be used to estimate realistic detection limits in presence of interferences that depend on the selectivity of the sensors and on the concentration levels of interferents.
ISSN:0910-6340
1348-2246
DOI:10.2116/analsci.7.Supple_725