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. Author manuscript; available in PMC: 2013 Jul 17.
Published in final edited form as: Environ Sci Technol. 2012 Jul 6;46(14):7677–7684. doi: 10.1021/es301790h

Figure 1.

Figure 1

Chromatograms showing the separation of 97 PAHs by GC×GC/ToF-MS using 3 different column combinations: (A) TIC for Combination “A” showing co-elution of PAHs at (1D ‘minutes’, 2D ‘seconds’): (B) 23.57, 1.19 to 30.24, 1.79; (C) 28.41, 1.30 to 34.24, 1.80; (D) 33.90, 1.37 to 37.23, 1.97. (E) TIC for Combination “B”, with improved separation at (F) 5, 0.75 to 10.83, 1.65; (G) 10.58, 1.19 to 23.91, 2.69; (H) 22.99, 1.17 to 36.32, 2.67. (I) TIC for combination “C” with a further improvement in separation at: (J) 5, 1.00 to 11.67, 2.50; (K) 11.40, 1.68 to 24.75, 3.68; (L) 25.40, 1.89 to 38.73, 3.39. Chrysene (CHR) and Triphenylene (TRI) are labeled for each column combination