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CONTINUOUS FORMALDEHYDE MEASUREMENT SYSTEM BASED ON MODIFIED FOURIER TRANSFORM INFRARED SPECTROSCOPY
THOMPSON, E. L., E. D. THOMA, R. L. SPELLICY, AND R. BREWER. CONTINUOUS FORMALDEHYDE MEASUREMENT SYSTEM BASED ON MODIFIED FOURIER TRANSFORM INFRARED SPECTROSCOPY. In Proceedings, 99th Annual Conference of the Air & Waste Management Association, New Orleans, LA, June 20 - 23, 2006. Curran Associates, Inc., Red Hook, NY, Ext Abst #271, (2006).
EPA is developing advanced open-path and cell-based optical techniques for time-resolved measurement of priority hazardous air pollutants such as formaldehyde (HCHO). Due to its high National Air Toxics Assessment risk factor, there is increasing interest in continuous measurement of HCHO in the low parts per billion range using robust and cost-effective monitoring technology. Measurement of HCHO using optical spectroscopy has several inherent operational advantages including direct atmospheric sampling, high time resolution, permanently recorded spectra, and no laboratory analysis costs. Additionally, optical techniques generally lend themselves to long-term automation strategies and remote operation necessary for continuous monitoring applications. In addition to the cell-based quantum cascade laser spectroscopy approaches, EPA is investigating modified versions of Fourier Transform Infrared spectroscopy for automated measurement of low-level HCHO.
Record Details:Record Type: DOCUMENT (PAPER IN NON-EPA PROCEEDINGS)
Organization:U.S. ENVIRONMENTAL PROTECTION AGENCY
OFFICE OF RESEARCH AND DEVELOPMENT
NATIONAL RISK MANAGEMENT RESEARCH LABORATORY
AIR POLLUTION PREVENTION AND CONTROL DIVISION
EMISSIONS CHARACTERIZATION AND PREVENTION BRANCH