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. Author manuscript; available in PMC: 2011 May 15.
Published in final edited form as: Anal Chem. 2010 May 15;82(10):4130–4139. doi: 10.1021/ac100242b

Figure 4.

Figure 4

Surface-enhanced TM-DESI analysis of a 1 mL plasma sample containing mercaptopurine (50 μM). The extracted ion chronogram of the collisionally induced dissociation product ion of m/z 193 is shown on the left, while MS2 and MS3 spectra for the captured analyte are shown on the right.