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Detection of Benzene and Trichloroethylene in Sooting Flames

Volume 46, Number 4 (April 1992) Page 620-625

Getty, J.D.; Westre, S.G.; Bezabeh, D.Z.; Barrall, G.A.; Burmeister, M.J.; Kelly, P.B.


The utility of resonance Raman spectroscopy as an analytical method is studied for application to multicomponent sooting flames. Far-ultraviolet resonance Raman spectra of benzene and trichloroethylene in methane diffusion flames have been obtained. The feasibility of flame temperature determination has been demonstrated for the benzene/methane flame. Resonance enhancement provides the sensitivity and selectivity required to detect low concentrations of aromatics and chlorinated hydrocarbons, in contrast to conventional spontaneous Raman spectroscopy, which suffers from low sensitivity and interference from laser-induced fluorescence of polycyclic aromatic hydrocarbons (PAHs).