GC-Orbitrap-MS screening and analyzing method for pesticide residues in animal-derived food
A technology of animal origin and analysis method, which is applied in the field of agricultural product quality and safety inspection, can solve the problems of large consumption of organic solvents, long time-consuming, cumbersome steps, etc.
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[0049] 1. Instrument working conditions:
[0050] Chromatographic conditions:
[0051]The chromatographic conditions of the gas chromatography are as follows: the heating program is: initial temperature 40°C, keep 1.5min; 25°C / min heat up to 90°C, keep 1.5min; 25°C / min heat up to 180°C; 5°C / min heat up to 280°C; 10°C / min to 300°C and keep for 3min. The inlet temperature was 290 °C, and the helium flow rate was 1.2 mL / min.
[0052] Mass Spectrometry Conditions:
[0053] The mass spectrometry conditions of the Orbitrap-MS method with an EI ion source are as follows: the ion source temperature is 280 °C, the ionization energy is 70 eV, and the current is 50 μA. The ion scan mode is full scan mode (Fullscan mode), the scan range is 50-550m / z, and the resolution is set to 60,000FWHM (200m / z).
[0054] The internal standard reference solution was used to calibrate the mass accuracy of the instrument in real time, and the mass spectrometry detection data was collected and process...
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