Research Article

Rapid Screening of 352 Pesticide Residues in Chrysanthemum Flower by Gas Chromatography Coupled to Quadrupole-Orbitrap Mass Spectrometry with Sin-QuEChERS Nanocolumn Extraction

Figure 4

Mass spectrum of profenofos in the standard (a) and chrysanthemum flower positive samples (b).
(a)
(b)