Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Long Path Differential Optical Absorption Spectrometer and EPA-Approved Fixed-Point Methods Intercomparison.
Author Stevens, R. K. ; Drago, R. J. ; Mamane, Y. ;
CORP Author Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab. ;Technion - Israel Inst. of Tech., Haifa. Dept. of Environmental Engineering.
Publisher 22 Oct 92
Year Published 1992
Report Number EPA/600/J-93/466;
Stock Number PB94-113099
Additional Subjects Air pollution monitoring ; Measuring instruments ; Field tests ; Sweden ; Performance evaluation ; Design criteria ; Concentration(Composition) ; Remote sensing ; Urban areas ; US EPA ; Reprints ; Foreign technology ; Differential optical absorption spectrometry
Library Call Number Additional Info Location Last
NTIS  PB94-113099 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 02/27/1994
Collation 8p
Differential optical absorption spectrometry (DOAS) has been used by a number of investigators over the past 10 years to measure a wide range of gaseous air pollutants. Recently OPSIS AB, Lund, Sweden, has developed and made commercially available a DOAS instrument that has a number of features which make the unit attractive for field monitoring studies in both remote and urban areas. The DOAS is composed of a broadband light source (emission between 200 and 1000 nm) and a receiver-spectrometer assembly. The spectral data from the spectrometer are processed in real time using a PC computer to calculate the concentrations of the pollutants programmed to be monitored by the system. The distance between the light source and receiver can range from 100 m to 2,000 m, depending on the pollutant to be monitored and species concentrations. In September and October of 1989, an OPSIS AB DOAS was operated in the Research Triangle Park, NC on the roofs of the two main EPA laboratories.