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Monitoring of vapor phase polycyclic aromatic hydrocarbons

United States Patent

June 1, 2004
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
An apparatus for monitoring vapor phase polycyclic aromatic hydrocarbons in a high-temperature environment has an excitation source producing electromagnetic radiation, an optical path having an optical probe optically communicating the electromagnetic radiation received at a proximal end to a distal end, a spectrometer or polychromator, a detector, and a positioner coupled to the first optical path. The positioner can slidably move the distal end of the optical probe to maintain the distal end position with respect to an area of a material undergoing combustion. The emitted wavelength can be directed to a detector in a single optical probe backscattered configuration, in a dual optical probe backscattered configuration or in a dual optical probe side scattered configuration. The apparatus can be used to monitor an emitted wavelength of energy from a polycyclic aromatic hydrocarbon as it fluoresces in a high temperature environment.
Vo-Dinh; Tuan (Knoxville, TN), Hajaligol; Mohammad R. (Midlothian, VA)
Philip Morris Incorporated (New York, NY)
10/ 022,239
December 20, 2001
STATEMENT REGRADING FEDERALLY SPONSORED RESEARCH OR DEVELOPMENT The United States Government has rights in this invention pursuant to Contract No. DE-AC05-00OR22727 between the United States Department of Energy and Martin Marietta Energy Systems, Inc.