Stanovenie zmesného vínneho destilátu v brandy fluorescenčnou spektrometriou
The determination has been carried out using excitation-emission matrix fluorescence along with parallel factor analysis (PARAFAC), partial least-squares regression (PLS) and multiple linear regression (MLR). Calibration models consisting of varying spirit composition and brandy were constructed and their accuracy was evaluated through the root-mean-square error of prediction (RMSEP). PLS was a better method compared with MLR due to its lower RMSEP values. The right-angle cell geometry of fluorescence measurements yielded better results than the front-face technique.