Determination of 9 organophosphorus pesticide residues in plant-derived substrates - liquid chromatography-tandem mass spectrometry
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Food safety analysis workflow
Thermo Scientific Life Science MS not only has a long tradition of technology, but also continues to innovate. Quadrupole mass analysis of true conjugate hyperboloids that fits the perfect theoretical electric field of a textbook is used on all TSQ® triple quadrupole mass spectrometers. Since launching the world's first triple quadrupole MS/MS (TSQ®) mass spectrometer in 1980, TSQ® triple quadrupole mass spectrometer has been widely used in environmental protection, agriculture, quarantine, food safety, etc. Analytical testing, fully capable of testing routine testing of large-volume samples of crops, livestock and poultry products, dairy products and related processed foods, such as pesticide residues in food, veterinary drug residues, mycotoxins, additives, nutritional supplements and organic pollutants And other projects to help you easily meet the increasingly stringent regulatory requirements.
TSQ® Triple Quadrupole Mass Spectrometer and Thermo Fisher Food Safety Testing Strategy
summary
Organophosphorus pesticides are organic phosphorus-containing compounds used to control plant diseases and insect pests. These pesticides have high efficacy, wide application and easy decomposition. In this paper, with reference to GB/T 20769-2008, an instrument method for rapid detection of various organophosphorus pesticide residues was developed, and the external standard method was used for quantification.
Pretreatment
For related reagent materials, standard configuration and reserves, and sample preparation methods, please refer to the above standards. For related instrument methods, please refer to this document. ( TSQ Triple Quadrupole Mass Spectrometer Concise Application Manual - Food Safety Testing )
instrument
The TSQ Triple Quadrupole LC/MS system is equipped with an ultra-high pressure liquid phase system.
Liquid phase condition
Mass spectrometry condition
SRM condition
Experimental result
Typical chromatogram
in conclusion
GB2763-2014 The maximum residue limit for the above 9 organophosphorus pesticides is 0.01-10 mg/kg. This method can fully meet the requirements of domestic and international regulations for the sensitivity and reproducibility of conventional regulations.