Acetonitrile (CH3CN) infrared absorption cross sections in the 3μm region

N.D.C. Allen; J.J. Harrison; P.F. Bernath

doi:10.1016/j.jqsrt.2011.04.001

Acetonitrile (CH3CN) infrared absorption cross sections in the 3μm region

N.D.C. Allen, J.J. Harrison, P.F. Bernath

Chemistry

Research output: Contribution to journal › Article › peer-review

Abstract

High resolution infrared absorption cross sections of acetonitrile have been determined from spectra recorded in the 3μm spectral region using a Bruker IFS 125 HR Fourier transform spectrometer (FTS) and a multipass White cell. The eleven synthetic air-broadened acetonitrile spectra were recorded at a resolution of 0.015cm (calculated as 0.9/MOPD (Maximum Optical Path Difference), the Bruker definition of resolution) over a range of different temperatures and pressures that are representative of conditions in the Earth's atmosphere (50-760Torr and 207-296K). Intensities were calibrated using infrared spectra recorded at the Pacific Northwest National Laboratory (PNNL). These new cross sections will enable satellite retrievals of acetonitrile in the 3μm region from atmospheric spectra recorded by satellite instruments, such as the ACE (Atmospheric Chemistry Experiment)-FTS.

Original language	English
Pages (from-to)	1961-1966
Number of pages	6
Journal	Journal of Quantitative Spectroscopy and Radiative Transfer
Volume	112
Issue number	12
DOIs	https://doi.org/10.1016/j.jqsrt.2011.04.001
Publication status	Published - 1 Aug 2011

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10.1016/j.jqsrt.2011.04.001

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abstract = "High resolution infrared absorption cross sections of acetonitrile have been determined from spectra recorded in the 3μm spectral region using a Bruker IFS 125 HR Fourier transform spectrometer (FTS) and a multipass White cell. The eleven synthetic air-broadened acetonitrile spectra were recorded at a resolution of 0.015cm (calculated as 0.9/MOPD (Maximum Optical Path Difference), the Bruker definition of resolution) over a range of different temperatures and pressures that are representative of conditions in the Earth's atmosphere (50-760Torr and 207-296K). Intensities were calibrated using infrared spectra recorded at the Pacific Northwest National Laboratory (PNNL). These new cross sections will enable satellite retrievals of acetonitrile in the 3μm region from atmospheric spectra recorded by satellite instruments, such as the ACE (Atmospheric Chemistry Experiment)-FTS.",

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Acetonitrile (CH3CN) infrared absorption cross sections in the 3μm region

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