Absolute infrared band intensities and air broadening coefficient for spectroscopic measurements of formic acid in air |
| |
Affiliation: | 1. Department of Physics, Old Dominion University, Norfolk, VA 23529, USA;2. Department of Chemistry & Biochemistry, Old Dominion University, Norfolk, VA 23529, USA;3. Instituto de Astrofsica de Canarias, E-38205 La Laguna, Tenerife, Spain;4. Departamento de Astrofsica, Universidad de La Laguna, E-38206 La Laguna, Tenerife, Spain |
| |
Abstract: | The absolute infrared intensities of the ν2, ν3 and ν6 bands of formic acid have been evaluated in a 480 L White cell system using FTIR and ion chromatography techniques. The values obtained are, respectively; (4.2 ± 0.2) × 10−17 cm molec−1 for the ν6 band, (4.8 ± 0.2) × 10−17 cm molec−1 for the ν3 band and (0.57 ± 0.04) × 10−17 cm molec−1 for the ν2 band. The air broadening coefficient of transitions in the ν6 band, has been measured using a tunable diode laser spectrometer, equal to (0.101 ± 0.005) cm−1 atm−1 (half width at half maximum). A computer search has been performed to find absorption lines of formic acid suitable for second derivative tunable diode laser measurement of this gas in ambient air. |
| |
Keywords: | |
本文献已被 ScienceDirect 等数据库收录! |
|