Calibration transfer employing univariate correction and robust regression

Analytica Chimica Acta
Roberto Kawakami Harrop GalvãoMário César Ugulino Araújo

Abstract

This paper proposes a new method for calibration transfer, which was specifically designed to work with isolated variables, rather than the full spectrum or spectral windows. For this purpose, a univariate procedure is initially employed to correct the spectral measurements of the secondary instrument, given a set of transfer samples. A robust regression technique is then used to obtain a model with low sensitivity with respect to the univariate correction residuals. The proposed method is employed in two case studies involving near infrared spectrometric determination of specific mass, research octane number and naphthenes in gasoline, and moisture and oil in corn. In both cases, better calibration transfer results were obtained in comparison with piecewise direct standardization (PDS). The proposed method should be of a particular value for use with application-targeted instruments that monitor only a small set of spectral variables.

References

Jul 1, 2008·Talanta·Edvaldo da Nóbrega GaiãoMário César Ugulino de Araújo
Apr 1, 1995·Talanta·P C HauserN E Cates
Jun 3, 2009·Prostate Cancer and Prostatic Diseases·D A GalvãoR U Newton
Sep 1, 1996·Analytical Chemistry·T B BlankS L Monfre
May 31, 2011·Analytica Chimica Acta·Luis Fermín Capitán-Vallvey, Alberto J Palma

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