领学术科研之先，创食品科技之新
—— 中国食品杂志社
In this experiment, a liquid chromatography tandem mass spectrometry method was built to determine 15 pesticide residues in Chinese cabbage and cucumber samples based on online turbulent flow chromatography purification. After modified quick, easy, cheap, effective, rugged, and safe (QuEChERS) extraction, extracts were directly injected to the TLX (TurboFlow Liquid Xcalibur) system and brought to TurboFlowTM columns for on-line purification and then transferred to analytical column for further separation and analysis. TurboFlowTM columns types, transfer flow rate, and transfer time were optimized. Limits of detection and limits of quantification of the method obtained for 15 pesticide residues were ranged between 0.2–1.0 g/kg and 0.5–2.0 g/kg in Chinese cabbage and cucumber samples. Recoveries of pesticide residues were in range of 75.3%–103.7%. Matrix effects for 15 pesticides were in range of 5.6%–106.6%. The developed method has been successfully used for the determination of 15 pesticide residues in real samples.
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