Record Display for the EPA National Library Catalog


OLS Field Name OLS Field Data
Main Title Improved Manual Method for NOx Emission Measurement.
Author De, L. A. ; Marten, H. H. ; Merril, C. I. ; Nakamur, J. T. ; Marton, J. ;
CORP Author Air Force Rocket Propulsion Lab., Edwards AFB, Calif.
Year Published 1972
Report Number R2-72-067;
Stock Number PB-212 859
Additional Subjects ( Nitrogen oxides ; Gas analysis) ; ( Air pollution ; Nitrogen oxides) ; Gas sampling ; Lead oxides ; Chemisorption ; Inorganic nitrates ; Electrodes ; Precipitation(Chemistry) ; Field tests ; Samplers ; Air pollution detection ; Ion selective electrodes
Internet Access
Description Access URL
Library Call Number Additional Info Location Last
NTIS  PB-212 859 Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy. 06/23/1988
Collation 107p
The current manual NO(x) sampling and analysis method was evaluated. Improved time-integrated sampling and rapid analysis methods were developed. In the new method, the sample gas is drawn through a heated bed of uniquely active, crystalline, PbO2 where NO(x) is quantitatively absorbed. Nitrate ion is later extracted with water and the concentration subsequently determined by a NO3(-) selective ion electrode. A simple selective precipitation eliminates electrode interferences derived from PbO2 absorption of other combustion products such as HCl, SO(x), HF, and CO. Field tests were conducted at various stationary source sites and the data is presented herein. (Author)