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Nitrogen dioxide absorption cross section

Fig. 2-16. Absorption spectrum and 0(3P) quantum yields for nitrogen dioxide. Absorption cross sections adapted from Bass el al. (1976), quantum yields from the authors listed. Threshold wavelengths for the formation of 0(3P) and O( D) are indicated. Fig. 2-16. Absorption spectrum and 0(3P) quantum yields for nitrogen dioxide. Absorption cross sections adapted from Bass el al. (1976), quantum yields from the authors listed. Threshold wavelengths for the formation of 0(3P) and O( D) are indicated.
The absorption coefficient of nitrogen dioxide was measured for several mercury lines by Holmes and Daniels (5). The resolved spectra of the nitrogen dioxide-nitrogen tetroxide system were separated by Hall and Blacet (4)- The value they found for the absorption coefficient at 3660 A. was in essential agreement with that obtained by Holmes and Daniels. The absorption cross section of 6.8 X 10 sq. cm. for nitrogen dioxide at 3660 A. was calculated from the data of Holmes and Daniels. [Pg.411]

Laser PAS has been used to monitor air samples. Minimum detectable concentrations of gaseous pollutants are often in the parts per billion (ppb) or sub-ppb range depending on the molecular absorption cross section and on possible absorption interferences. Most studies have been devoted to investigations on collected air samples of different origin. A CO laser-based PAS has been used for analysis of vehicular exhausts. A number of compounds such as nitric oxide, nitrogen dioxide, H2O vapor, and other volatile organic compounds such as alkenes, aromatic hydrocarbons, and aldehydes have been reported. A mobile PAS system has been developed for analysis in the field. [Pg.405]


See other pages where Nitrogen dioxide absorption cross section is mentioned: [Pg.32]    [Pg.330]    [Pg.92]   
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Section 8. Nitrogen

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