Analysis of Multiresidue Pesticides Present in Ayurvedic Churna by GC-MS/MS

Ayurvedic churna samples were extracted by liquid-liquid extraction and cleanup with dispersive solid phase extraction. The analysis was performed by GC-MS/MS using a timed-SRM detection method on Thermo Scientific TSQ 8000™ triple quadrupole GC-MS/MS instrument, employing two SRM transitions for each pesticide compound in a typical MRM method setup. Data processing and reporting are performed by using the Thermo Scientific TraceFinder™ software with one SRM transition used for quantitation and the second one for ion ratio confirmation.