There are certain issues in e-tongue research which precludes wide adoption of these systems in routine analytical practice. An important problem relates to sensor readings’ drift which may invalidate corresponding multivariate calibration. Invalidation of established multivariate classification and regression models during a certain period of time leads to necessity of frequent e-tongue system recalibration requiring significant investment of time and efforts. An alternative approach can be based on mathematical sensor drift correction using sensor responses in certain standard solutions which are measured with required periodicity. In this study we show that application of univariate single sensor standardization approach (similar to single wavelength standardization suggested in spectroscopy) can significantly improve precision of both regression and classification models and can extend a calibration lifetime up to the period of over two months compared with two weeks for raw uncorrected data. As a case study analysis of microcystins in water samples with potentiometric e-tongue was addressed in two aspects: quantitative microcystins concentration evaluation and classification of samples into toxic and non-toxic ones. © 2016 Elsevier B.V.

Panchuk, V., LVOVA, L., Kirsanov, D., Gonçalves, C., DI NATALE, C., PAOLESSE, R., et al. (2016). Extending electronic tongue calibration lifetime through mathematical drift correction: Case study of microcystin toxicity analysis in waters. SENSORS AND ACTUATORS. B, CHEMICAL, 237, 962-968 [10.1016/j.snb.2016.07.045].

Extending electronic tongue calibration lifetime through mathematical drift correction: Case study of microcystin toxicity analysis in waters

LVOVA, LARISA;DI NATALE, CORRADO;PAOLESSE, ROBERTO;
2016

Abstract

There are certain issues in e-tongue research which precludes wide adoption of these systems in routine analytical practice. An important problem relates to sensor readings’ drift which may invalidate corresponding multivariate calibration. Invalidation of established multivariate classification and regression models during a certain period of time leads to necessity of frequent e-tongue system recalibration requiring significant investment of time and efforts. An alternative approach can be based on mathematical sensor drift correction using sensor responses in certain standard solutions which are measured with required periodicity. In this study we show that application of univariate single sensor standardization approach (similar to single wavelength standardization suggested in spectroscopy) can significantly improve precision of both regression and classification models and can extend a calibration lifetime up to the period of over two months compared with two weeks for raw uncorrected data. As a case study analysis of microcystins in water samples with potentiometric e-tongue was addressed in two aspects: quantitative microcystins concentration evaluation and classification of samples into toxic and non-toxic ones. © 2016 Elsevier B.V.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore CHIM/07 - Fondamenti Chimici delle Tecnologie
Settore ING-INF/01 - Elettronica
English
Con Impact Factor ISI
Calibration; Regression analysis; Standardization; Toxic materials, Calibration transfer; Case study analysis; Drift correction; Evaluation and classifications; Multivariate calibration; Multivariate classification; Regression and classification models; Standard solutions, Electronic tongues; Calibration transfer; Drift correction; Electronic tongue; Sensor standardization
https://www.scopus.com/inward/record.uri?eid=2-s2.0-84978842529&doi=10.1016/j.snb.2016.07.045&partnerID=40&md5=947a4b424c1e8518df841fa9d85d7026
Panchuk, V., LVOVA, L., Kirsanov, D., Gonçalves, C., DI NATALE, C., PAOLESSE, R., et al. (2016). Extending electronic tongue calibration lifetime through mathematical drift correction: Case study of microcystin toxicity analysis in waters. SENSORS AND ACTUATORS. B, CHEMICAL, 237, 962-968 [10.1016/j.snb.2016.07.045].
Panchuk, V; Lvova, L; Kirsanov, D; Gonçalves, C; DI NATALE, C; Paolesse, R; Legin, A
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/175403
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