GENERATION OF SECOND-ORDER ELECTROCHEMICAL DATA FOR INTERFERENCE-FREE CALIBRATION OF GALLIC ACID IN RED WINES

A. MONTEMERLO; S. M. AZCÁRATE; J.M. CAMIÑA; G. MESIINA

Bento Goncalves

Congreso; 8 CONGRESO iBEROAMERICANO DE QUIMICA ANALITICA (8 CIAQA); 2022

Universidad Bento Goncalves

The rise of multidirectional calibration enabled the quantification of numerous analytes in complex samples without interference, even in the presence of components not modeled in the calibration, commonly referred to as a second-order advantage. However, classical chemometric methodologies assume that the data comply with the property of bilinearity, which is sometimes not possible with all instrumental methods. Among them, electrochemistry is capable of providing information with highpotential to be used in the development of new second-order calibration methodologies, even if they do not meet the aforementioned conditions. This work raises the possibility of developing a simple and versatile methodology for the interference-free quantification of gallic acid in the presence of ascorbic acid, based on chemometric modeling of electrochemical data.