Determination of the Novel Insecticide Flupyradifurone and Its Two Metabolites in Traditional Chinese Herbal Medicines Using Modified QuEChERS and High-Performance Liquid Chromatography-Tandem Mass Spectrometry

Figure 1

HPLC-MS/MS chromatograms of DFA (1.0 mg/L, peak 1), 6-CNA (1.0 mg/L, peak 2), and flupyradifurone (0.1 mg/L, peak 3) on C₁₈ column and the same elution procedure under different injection solutions conditions. ((a) Acetonitrile: water = 1 : 0 (v/v), (b) acetonitrile: water = 4 : 1 (v/v), (c) acetonitrile: water = 1 : 1 (v/v), (d) acetonitrile: water = 1 : 4 (v/v)).

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(b)

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