
High-performance liquid chromatography-tandem mass spectroscopy (HPLC–MS/MS) chromatography reveals pyrrolizidine alkaloids (PA)/pyrrolizidine alkaloid N-oxides (PANO) toxin risks in 63 tea samples.
Fully automated extraction, removal of matrix interferences (phospholipids), and accurate determination of antibiotic compounds in eggs by LC-MS/MS is demonstrated.






