Fig. 1. Chromatograms of phenolic compounds for a mainstream ISO smoke sample
of KY3R4F cigarettes (A) and its spiked (LFM) sample (B) using a PFP (2) column. Peak
identification: (1) hydroquinone, (2) resorcinol, (3) catechol, (4) phenol, (5) guaiacol,
(6) p-cresol, (7) m-cresol, and (8) o-cresol.