Extinction Coefficients of NO2 and N2O4

Arnold M Bass; Albert E Ledford Jr; Allan H Laufer

doi:10.6028/jres.080A.017

Extinction Coefficients of NO₂ and N₂O₄

J Res Natl Bur Stand A Phys Chem. 1976 Mar-Apr;80A(2):143-166. doi: 10.6028/jres.080A.017. Epub 1976 Apr 1.

Authors

Arnold M Bass¹, Albert E Ledford Jr¹, Allan H Laufer¹

Affiliation

¹ Institute for Materials Research, National Bureau of Standards, Washington, D.C. 20434.

Abstract

The extinction coefficient of NO₂ has been measured in the spectral range 185 to 410 nm as a function of temperature between 235 and 298 K. In order to correct for the effect of the dimer absorption, the extinction coefficient of N₂O₄ has also been measured. The effect of a decrease in temperature upon the NO₂ absorption is a reduction in the extinction coefficient of approximately 10 percent in the range 320 to 380 nm.

Keywords: Absorption; N2O4; NO2; extinction coefficients; spectra; temperature effects.