The maintenance of a PARAFAC calibration and the second-order property: application to the determination of ciprofloxacin in presence of enrofloxacin by excitation–emission fluorescence Original Research Article

Calibration maintenance from day to day is an interesting problem when an analytical method is proposed for routine daily use. In this work the performance criteria of the fluorescence in the determination of quinolones by means of the parallel factor analysis (PARAFAC) model has been established according to the ISO standards and the 2002/657/EC European Decision. The presence of these substances in animals for human consumption is regulated and forbidden in poultry producing eggs for human consumption (Regulation No. 1181/2002).