Dispersive liquid-liquid microextraction for the determination of macrocyclic lactones in milk by liquid chromatography with diode array detection and atmospheric pressure chemical ionization ion-trap tandem mass spectrometry

► Five endectocides are determined in milk samples using liquid chromatography. ► A high sensitivity is achieved due to dispersive liquid-liquid microextraction. ► The procedure allows the EU regulations to be attained using diode array detection.