- Author
-
Creitz, E. C.
- Title
- Gas Chromatographic Determination of Composition Profiles of Stable Species Around a Propane Diffusion Flame.
- Coporate
- National Bureau of Standards, Gaithersburg, MD
- Journal
-
Journal of Chromatographic Science,
Vol. 10,
168-173,
March 1972
- Report
-
F7200904,
- Keywords
-
gas chromatography
|
carbon monoxide
|
chain reactions
|
oxygen concentration
- Abstract
- An analytical method was developed for determining, quantitatively, with a GC, the gases present around a 2.4 cm high propane diffusion flame burning in air. The method gives quantitative results on samples having some constituents which may not be eluted from the column. Outside the yellow mantle the only fuel species found were carbon, hydrogen and carbon monoxide. The oxygen concentration dropped to zero at a distance of 0.57 mm from the yellow mantle indicating that pyrolysis of the fuel was essentially without O2. The absence of other fuel species implicates the hydrogen-oxygen chain reaction as having a part in the mechanism of inhibition. When CF3Br was added to the air, its decomposition was complete at a distance of 2.56 mm from the yellow mantle. The decomposition appeared to be chemical rather than thermal.