Page 318 - Multidimensional Chromatography

308 Multidimensional Chromatography

Figure 12.2 Chromatograms of an ABS copolymer sample: (a) microcolumn SEC trace; (b)
capillary GC trace of peak ‘x’. Peak identification is as follows: 1, C 14 alkanes; 2, C 15 alkanes;
3, C 18 alkanes; 4, nonylphenol; 5, palmitic acid; 6, styrene–acetonitrile trimer; 7, stearic acid;
8, styrene–acetonitrile trimer; 9, Irganox 1076; 10, trinonylphenyl phosphate; 11, Ethanox
330. Reprinted with permission from Ref. (12).

material in the matrix. This is an effective technique to prevent the introduction of
non-volatile components into the capillary GC–MS system.
As representative examples of the use of this technique, Figures 12.2, 12.3 and
12.4 show, respectively, the SEC–GC traces obtained in the analysis of samples

Figure 12.3 Chromatograms of an ignition-resistant high-impact polystyrene sample: (a)
Microcolumn SEC trace; (b) capillary GC trace of peak ‘x’. Peak identification is as follows 1,
ionol; 2, benzophenone; 3, styrene dimer; 4, palmitic acid; 5, stearic acid; 6, styrene trimers;
7, styrene trimer; 8, styrene oligomer; 9, Irganox 1076 and Irganox 168; 10, styrene oligomer;
11, nonabromodiphenyl oxide; and 12, decabromodiphenyl oxide. Reprinted with permission
from Ref. (12).