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Optimizing gas chromatographic separations

✍ Scribed by Freeman, R. R. ;Jennings, W.

Publisher
John Wiley and Sons
Year
1987
Tongue
English
Weight
268 KB
Volume
10
Category
Article
ISSN
0935-6304

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✦ Synopsis

While separations based on the use of stationary phases specifically designed to maximize solute alphas can, in the strictest sense, be precisely optimized only under specific isothermal conditions, the approach has previously been used even with temperature programmed separations. Selectivity can be further "tuned" by 1) differential variations in the carrier gas velocity through dissimilarly coated coupled columns, and 2) temperature variations in columns of at least moderate polarity. This paper explores the latter approach.

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