Determination of Methomyl Residue in Tobacco Samples by Heart-Cutting Two-Dimensional Liquid Chromatography with Tandem Mass Spectrometry

Figure 3

MRM spectrum of the tobacco sample and methomyl standard. (a) 1D-tobacco sample, (b) 1D-methomyl standard, and (c) 2D-tobacco sample.

(a)

(b)

(c)