4. Conclusions
Multivariate curve resolution coupled to liquid chromatography with UV/fluorescence detection has demonstrated to be a robust and ca- pable tool to solve a complex mixture of agrochemicals in vegetables following a green strategy. In fact, the ten analyzed compounds were successfully determined in less than 5 min without a complete chro- matographic separation and without removing potential interferents of real matrices. The dual detection allows us to determine a larger number of compounds, while the use of two excitation wavelengths in the fluorescence detector improved the sensitivity of the fluorescence
Fig. 6. Plot for predicted concentrations of the ten studied agrochemicals as a function of the nominal values in fungus (circle), crisphead (square) and butter (diamond) lettuces, alfalfa sprouts (triangle up), cucumber (triangle down), and celery (hexagon) samples (error bars correspond to duplicates). The inset shows the corresponding elliptical joint region at 95% confidence level. The cross marks the theoretical (intercept = 0, slope = 1) point.
detection. Taking into account the low experimentally required time, the good sensitivity and the significant simplicity, we can assert that the proposed method favorably compares with those usually employed in this type of determinations.