Gas Chromatography-Mass Spectrometry Determination of Deltamethrin in Food

The article presents the results of the determination of the synthetic pyrethroid deltamethrin in raw food and various food products by gas chromatography with mass spectrometric detection (GC-MS). The stage of GC-MS determination is preceded by sample preparation using the QuEChERS method. The developed method for quantitative determination of deltamethrin by GC-MS with electron ionization (EI, 70 eV) in food products using QuEChERS is characterized by a detection limit of 0.9 mu g/kg deltamethrin and a standard deviation not exceeding 5%. The GC-MS quantitative determination of ultra-low deltamethrin content in food was performed in selected ion mode (SIM/SIR mode). The selected ions were m/z 253 (main ion) and m/z 208, 181 (confirming ions), respectively.