用Exactive快速筛查510种农药
Non-targeted Screening and Accurate Mass Confirmation of 510 Pesticides on the High Resolution Exactive Benchtop LC/MS Orbitrap Mass Spectrometer
Allen Zhang, James S. Chang, Christine Gu, Mark Sanders, Thermo Fisher Scientific, San Jose, CA, USA
Conclusion
A rapid and robust U-HPLC Exactive Orbitrap MS method for multiresidue pesticide screening was developed and validated. Screening of 510 pesticides at low ppb levels was achieved within 12 minutes, and the high mass resolution and accuracy of the Exactive mass spectrometer enabled identification of all compounds. LOQs for the majority of pesticides in a standard mixture and in spiked matrix were lower than MRLs established by the EU and Japan. The Exactive LC/MS platform is ideally suited for the routine monitoring of targeted and non-targeted pesticides by regulatory laboratories.
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