Screening of multi-class antibiotics in pork meat by LC-Orbitrap-MS with modified QuEChERS extraction

. The method was further validated by intra and inter-day tests with fortified samples. Recovery (85-105.6%) and precision values (RSDs < 15%) for all analytes were obtained. The result indicates that UPLC-Q-Orbitrap-MS coupled with QuEChERS preparation can serve as a routine method for multi-class antibiotic analysis in pork meat.