skip to main content
OSTI.GOV title logo U.S. Department of Energy
Office of Scientific and Technical Information

Title: Monitoring of vapor phase polycyclic aromatic hydrocarbons

Patent ·
OSTI ID:1174877

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 180.degree. backscattered configuration, in a dual optical probe 180.degree. backscattered configuration or in a dual optical probe 90.degree. 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.

Research Organization:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)
Sponsoring Organization:
USDOE
DOE Contract Number:
AC05-00OR22727
Assignee:
Philip Morris Incorporated (New York, NY)
Patent Number(s):
6,744,503
Application Number:
10/022,239
OSTI ID:
1174877
Country of Publication:
United States
Language:
English

References (12)

Laser-induced fluorescence studies of polycyclic aromatic hydrocarbons (PAH) vapors at high temperatures journal June 2001
Laser-Excited Synchronous Luminescence Spectroscopy journal April 1993
The sit image vidicon as a gas-phase fluorescence detector for gas chromatography journal March 1977
Laser-Induced Room-Temperature Phosphorescence Detection of Benzo[a]pyrene-DNA Adducts journal April 1987
A fiber-optic cyclodextrin-based sensor journal May 1991
Immunosensors: Principles and Applications journal October 1993
Fluorescence line-narrowing spectrometry of polycyclic compounds on filter paper substrates journal December 1986
High-Temperature Fluorescence Measurements and Instrumentation for Polyaromatic Hydrocarbons (PAH): A Review journal July 2000
Fiber optic sensor for laser-induced room-temperature phosphorescence detection of polycyclic aromatic compounds journal October 1996
Analysis of polynuclear aromatic compounds using laser-excited synchronous fluorescence journal March 1995
Applications of fast Fourier transform to deconvolution in single photon counting journal August 1979
Development of a dosimeter for personnel exposure to vapors of polyaromatic pollutants journal October 1985