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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 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 107p
Abstract 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)
Highlights Notes Evaluates the use of PbO2 to chemisorb NOx and an ion selective electrode to measure the resulting nitrate ion.
NTIS Title Notes Technical rept..
PUB Date Free Form Oct 72,
Category Codes 13B; 7B; 68A; 59A
NTIS Prices PC A06/MF A01
Document Type NT
Cataloging Source NTIS/MT
Control Number 326533586
Origin NTIS
Type CAT