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. Author manuscript; available in PMC: 2014 Jan 15.
Published in final edited form as: Anal Chem. 2012 Dec 28;85(2):1065–1072. doi: 10.1021/ac3028273

Figure 4.

Figure 4

Reconstructed ion chromatograms of N-acetoxy-PhIP-modified SA monitoring: PhIP ([M+H]+, m/z 225.1 → 210.1); 5-HO-PhIP ([M+H]+, m/z 241.1 → 210.1); and LQQC*PFEDHVK (C-[SO2]-PhIP) ([M+3H]3+, m/z 533.2 → 225.2, 521.8, 670.5) in (A) Non-oxidized SA and (B) m-CPBA-oxidized SA, digested with trypsin/chymotrypsin. The scales of the signals were fixed to the maximum response of the respective analytes between the nonoxidized and oxidized samples.