Record Display for the EPA National Library Catalog
RECORD NUMBER: 13 OF 32| 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 |
|
|||||||||||
| Holdings |
|
|||||||||||
| 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) |