Disperse Solid-Phase Extraction Cleanup for the Determination of 1-Deoxynojirimycin in Mulberry Leaves with Ultraperformance Liquid Chromatography-Tandem Mass Spectrometry

Figure 7

Comparison of chromatograms for purified and unpurified samples (c = 50 ng/mL). (a) Sample 1, unpurified. (b) Sample 1, purified. (c) Sample 2, unpurified. (d) Sample 2, purified.

(a)

(b)

(c)

(d)