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Multidimensional Chromatographic Applications in the Oil Industry 403

Figure 14.23 GC Light-end separation of a sample of crude oil. Peak identification is as fol-
lows:1,C 3 ; 2, i-C 4 ; 3, n-C 4 ; 5, 2-methyl-C 4 ; 6, n-C 5 ; 7, 2,2-dimethyl-C 4 ; 8, cyclo-C 5 2,3-
dimethyl-C 4 ; 9, 2-methyl-C 5 ; 10, 3-methyl-C 5 ; 11, n-C 6 ; 12, methyl-cyclo-C 5 ; 13, C 7 s; 14,
n-C 7 ; 15, C 8 s; 16, n-C 8 ; 17, C 9 s; 18, n-C 9 ; IS, internal standard (3,3-dimethyl-1-C 4 –).

ACKNOWLEDGEMENTS

The author would like to thank Jan Blomberg of the Shell Research and
Technology Center, Amsterdam and Dolf Grutterink of Analytical Controls,
Rotterdam for kindly supplying some of the chromatograms and schematic dia-
grams.

REFERENCES

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phase chromatography’, in Vapour Phase Chromatography D. H. Desty (Ed.),
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2. F. Harrison, P. Knight, R. P. Kelly and M. T. Heath, ‘The use of multiple columns and pro-
grammed column heating in the analysis of wide-boiling range halogenated hydrocarbon
samples in gas chromatography’, in Gas Chromatography D. H. Desty (Ed.),
Butterworths, London, pp. 216–247 (1958).
3. M. G. Bloch, ‘Determination of C 1 -through C 7 -hydrocarbons in a single run by a four-
stage gas chromatograph’, in Proceeding of the 2nd International Symposium on Gas
Chromatography, East Lansing, MI, USA H. J. Noebels (Ed.) Academic Press, New York
pp. 133–162 (1961).