ISSN:
0935-6304
Keywords:
Gas chromatography, GC
;
Noncryogenic GC
;
Thick film, wide-bore FSOT
;
Phase tuning
;
Sulfur gases
;
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Fused silica open tubular (FSOT) capillary column GC separations of low molecular weight, reactive sulfur-containing gases (S-gases) are significant improvements over packed column separations in terms of resolution, detection limits, and conditioning effects. Nevertheless, some of the problems with current FSOT capillary systems include matrix Injection incompatibilities; detector dead volumes; the necessity for cryogenic initial oven temperatures to separate CO2, H2S, COS, and SO2; and relatively long analysis times to separate later, closely eluting compounds. A noncryogenic FSOT GC-FPD system that either reduces or eliminates these problems is reported. Baseline separation of seven common S-gases (H2S-DMDS) is achieved in less than 5 min with ambient initial oven temperatures via this system, which is a combination of (1) a cryogenic sample concentration/injection design that is flow compatible with a wide-bore FSOT column; (2) a combined DB-1/DB-WAX thick phase, wide-bore FSOT column for greater capacity, retention, and tuned selectivity; and (3) a reduced dead volume FPD to minimize peak width and tailing.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/jhrc.1240101002
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