Fused silica capillary GC separation and element selective microwave plasma emission detection of volatile organometallics
✍ Scribed by Estes, S. A. ;Uden, P. C. ;Rausch, M. D. ;Barnes, R. M.
- Publisher
- John Wiley and Sons
- Year
- 1980
- Tongue
- English
- Weight
- 165 KB
- Volume
- 3
- Category
- Article
- ISSN
- 0935-6304
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✦ Synopsis
Reduced pressure microwave induced and sustained inert gas plasma emission for gas chromatographic specific element detection (GC-MED) [1,2] has disadvantages which have been largely overcome by the TMolo cylindrical resonance microwave cavity [3]. The increased efficiency of transfer of microwave power to the discharge allows an atmospheric pressure helium or argon plasma to be sustained at low power levels. This design permits light emitted to be viewed axially rather than through the quartz discharge tube walls which undergo transparency changes due to carbonaceous and metal oxide deposition and devitrification by the plasma. We have developed and applied a GC system based on this cavity [4-61.
In this communication, the element-selective detection of volatile organometallic compounds containing V, Cr, Mn, Fe, Co and Ni by fused silica WCOT capillary GC-MED is described, with nonspecific monitoring of the mixture by carbon-selective detection.