“…Pesticide use is subject to strict regulations, especially concerning residual levels in commercial foods (olives and olive oil). Several methods [1,2,3,4,5,6,7,8,9,10,11] have been developed for the analysis of pesticide residues in olive oil. These methods generally rely on liquid-liquid or liquid-solid extraction procedures, cleanup on a column and chromatographic separation techniques coupled with mass spectrometric detection, nitrogen-phosphorus detection (NPD) and flame photometric detection (FPD).…”