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Generalized Calibration Strategy in Analytical Chemistry

Paweł Kościelniak · Marcin Wieczorek · Joanna Kozak · Małgorzata Herman

30 citations0/0 files storedAnalytical Letters

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Scientific Measurement and Uncertainty Evaluation Analytical chemistry methods development Spectroscopy and Chemometric Analyses

Abstract

A novel calibration methodology named ‘the generalized calibration strategy’ (GCS) is presented that is aimed at verifying and improving the accuracy of analytical determinations. It is based on integration of calibration methods together with such operations as standard addition and sample dilution. At each stage of the sample dilution, the analytical result is estimated on the basis of six values, which are differently resistant to errors caused by interference and non-linearity effects. The process of stepwise elimination of both effects is controlled by comparison of these values. A dedicated flow system is presented. The GCS can be adapted to calibration by all well-known methods: conventional, internal standard, and indirect. This novel calibration strategy has been tested on indirect determination of chlorites in water samples by UV/Vis spectrophotometry.

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References

2007Principles of analytical calibration/quantification for the separation sciences 2001Calibration in chemical measurement processes. II. A methodological approach 2001Calibration in chemical measurement processes: I. A metrological approach 2004A review of interference effects and their correction in chemical analysis with special reference to uncertainty 2003Correction function on biased results due to matrix effects 2000Systematic errors: detection and correction by means of standard calibration, Youden calibration and standard additions method in conjunction with a method response model

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