Record Display for the EPA National Library Catalog


Main Title Comparison of ambient NMHC/NOx ratios with NMHC/NOx ratios calculated from emission inventories /
Author Drivas, Peter John,
CORP Author Pacific Environmental Services, Inc., Santa Monica, CA.;Environmental Protection Agency, Research Triangle Park, NC. Office of Air Quality Planning and Standards.
Publisher U.S. Environmental Protection Agency, Office of Air Quality Planning and Standards,
Year Published 1978
Report Number EPA 450/3-78/026; EPA-68-02-2583
Stock Number PB-288 989
OCLC Number 40351747
Subjects Air--Pollution--Measurement ; Aerosols--Analysis
Additional Subjects Air pollution ; Nitrogen oxides ; Hydrocarbon ; Monitoring ; California ; Missouri ; Oxidizers ; Inventories ; Ratios ; Data analysis ; Comparison ; Concentration(Composition) ; Mathematical models ; Regression analysis ; Los Angeles(California) ; San Francisco(California) ; Saint Louis(Missouri) ; Numerical solutions ; Air quality
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
EJBD ARCHIVE EPA 450-3-78-026 Headquarters Library/Washington,DC 05/28/2013
EKBD  EPA-450/3-78-026 Research Triangle Park Library/RTP, NC 09/10/1999
ESAD  EPA 450-3-78-026 Region 10 Library/Seattle,WA 03/23/2010
NTIS  PB-288 989 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation [59] pp. in var. pgs. ; 28 cm.
The Empirical Kinetic Modeling Approach (EKMA) requires the determination of the ratio of nonmethane hydrocarbons (NMHC) to oxides of nitrogen (NOx). Three geographic locations were used in analyzing the differences between NMHC/NOx ratios calculated from emission inventory data and those from ambient monitoring data. The three locations were: Los Angeles, California; San Francisco, California; and St. Louis, Missouri. The relationship between ambient monitoring NMHC/NOx ratios and emission inventory NMHC/NOx ratios was tested by applying a linear regression analysis to air quality and emission data from a number of monitoring stations in each region. The relationship was tested for each of five high-oxidant days in each of the three locations. The basic result found in all three locations was that there was little correlation between NMHC/NOx ratios calculated from ambient monitoring data and the corresponding NMHC/NOx ratios calculated from emission inventory data.
"EPA-450/3-78-026". EPA contract no. 68-02-2583; EPA project officer: James H. Wilson, Jr. References: section 6.