NDLI: A cryogenic enrichment technique for gas chromatographic detection of S/sub 2/F/sub 10/ in SF/sub 6/ discharges

Content Provider	IEEE Xplore Digital Library
Author	Sauers, I. Cacheiro, R.A.
Copyright Year	1992
Description	Author affiliation: Oak Ridge Nat. Lab., TN, USA (Sauers, I.; Cacheiro, R.A.)
Abstract	In conventional gas chromatography (GC), S/sub 2/F/sub 10/ in the presence of SF/sub 6/ is only detectable down to a concentration of approximately 50 ppm (parts per million). This limit, which is largely due to the interference of the SF/sub 6/ peak with S/sub 2/F/sub 10/, can be reduced by using an enrichment procedure similar to the online procedure used by KEMA, (J.A.J. Pettinga, 1985) whereby S/sub 2/F/sub 10/ is selectively trapped, increasing its concentration relative to SF/sub 6/, followed by subsequent GC analysis. Using commercially available components, the authors have set up a similar system and have evaluated some of the parameters influencing peak resolution and detectability, such as trapping temperature, desorption rates, and carrier gas flow. Other compounds relevant to SF/sub 6/ decomposition have also been examined using this system. Contrary to the KEMA results, S/sub 2/OF/sub 10/ was found to have a lower retention time than S/sub 2/F/sub 10/ in both the cryogenic enrichment system and in conventional GC. Analyses of corona-discharged SF/sub 6/ are reported, showing that this technique has at least a 1000-fold improvement in sensitivity over conventional GC.<>
Starting Page	340
Ending Page	344
File Size	430306
Page Count	5
File Format	PDF
ISBN	078030649X
ISSN	1089084X
DOI	10.1109/ELINSL.1992.246980
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	1992-06-07
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Cryogenics Gas chromatography Detectors Corona Control systems Temperature Sparks Arc discharges Radioactive decay Electric breakdown
Content Type	Text
Resource Type	Article

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