TSQ Endura 一针进样同时分析200多种兽残
Purpose: Development of a single quantitative method for multi-class veterinary drugs in animal meat products.Methods: 3 μ L injections of extracted meat (chicken, beef, and pork) spiked withveterinary drugs were injected onto a C18 reverse phase column. Compounds of interest were separated and eluted using a standardized gradient elution profile. A high performance triple quadrupole mass spectrometer with a heated electrospray source(HESI) was used to analyze the compounds of interest in positive and negative ionization, and the data were collected, analyzed, and reported using customized software.Results: The method provided excellent result s for most compounds at or below the required Maximum Residue Limits (MRLs)1 in the matrices studied. Several compounds could not be incorporated into the final method due to high polarity or poor chromatographic response under the proposed generic mobile phase conditions.