Page 396 - Multidimensional Chromatography

388 Multidimensional Chromatography

Figure 14.9 (a) Typical chromatogram obtained from the natural gas analyser, capillary
column channel. Peak identification is as follows: 1, methane; 2, ethane; 3, propane; 4, butane;
5, 2-methyl-butane; 6, n-pentane; 7, 2,2-dimethyl-butane; 8, 2-methyl-pentane; 9, 3-methyl-
pentane; 10, n-hexane; 11, methylcyclopentane; 12, 2,2-dimethyl-pentane; 13, benzene;
14–19, C 7 ; 20–23, C 8 s; 24, toluene; 25–28, C 8 s; 29, C 9 , 30, C 10 . (b) Corresponding (typical)
chromatogram obtained from the packed column channel. Peak identification is as follows: 1,
C 6 ; 2, propane; 3, isobutane; 4, n-butane; 5, 2-methyl-butane; 6, n-pentane; 7, carbon diox-
ide; 8, ethane; 9, nitrogen; 10, methane.