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Miroslav Kárny Katalin M. Hangos 《Journal of Automated Methods and Management in Chemistry》1989,11(2):70-75
The choice of calibration policy is of basic importance in analytical
chemistry. A prototype of the practical calibration problem is
formulated as a mathematical task and a Bayesian solution of the
resulting decision problem is presented. The optimum feedback
calibration policy can then be found by dynamic programming. The
underlying parameter estimation and filtering are solved by
updating relevant conditional distributions. In this way: the
necessary information is specified (for instance, the need for
knowledge of the probability distribution of unknown samples is
clearly recognized as the conceptually unavoidable informational
source); the relationship of the information gained from a
calibration experiment to the ultimate goal of calibration, i.e., to
the estimation of unknown samples, is explained; an ideal solution
is given which can serve for comparing various ways of calibration;
and a consistent and conceptually simple guideline is given for
using decision theory when solving problems of analytical chemistry
containing uncertain data. The abstract formulation is systematically
illustrated by an example taken from gas chromatography. 相似文献
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Ragnar Bye 《Journal of Automated Methods and Management in Chemistry》1989,11(4):156-158
The use of hydride generation is often useful in environmental
analysis. The normal acid sodium tetrahydroborate reaction
provides exceptional sensitivity with continuous flow hydride
generators. In some situations there are interferences which will
mask the sensitivity. An alternative chemistry system is described
here and is shown to offer similar sensitivity to that normally used.
A commercial continuous flow analyser is used in this work. 相似文献