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Title: Quantitative infrared absorption cross sections of isoprene for atmospheric measurements

Abstract

Isoprene (C5H8, 2-methyl-1,3-butadiene) is a volatile organic compound (VOC) and is one of the primary contributors to annual global VOC emissions. Isoprene is produced primarily by vegetation as well as anthropogenic sources, and its OH- and O3-initiated oxidations are a major source of atmospheric oxygenated organics. Few quantitative infrared studies have been reported for isoprene, limiting the ability to quantify isoprene emissions via remote or in situ infrared detection. We thus report absorption cross sections and integrated band intensities for isoprene in the 600–6500 cm-1 region. The pressure-broadened (1 atmosphere N2) spectra were recorded at 278, 298, and 323 K in a 19.94 cm path-length cell at 0.112 cm-1 resolution, using a Bruker IFS 66v/S Fourier transform infrared (FTIR) spectrometer. Composite spectra are derived from a minimum of seven isoprene sample pressures, each at one of three temperatures, and the number densities are normalized to 296 K and 1 atm.

Authors:
 [1];  [1];  [1];  [1];  [1];  [1]
  1. Pacific Northwest National Lab. (PNNL), Richland, WA (United States)
Publication Date:
Sponsoring Org.:
USDOE Office of Defense Programs (DP)
OSTI Identifier:
1197861
Grant/Contract Number:  
AC05-76RL01830
Resource Type:
Published Article
Journal Name:
Atmospheric Measurement Techniques (Online)
Additional Journal Information:
Journal Name: Atmospheric Measurement Techniques (Online) Journal Volume: 7 Journal Issue: 11; Journal ID: ISSN 1867-8548
Publisher:
Copernicus Publications, EGU
Country of Publication:
Germany
Language:
English

Citation Formats

Brauer, C. S., Blake, T. A., Guenther, A. B., Sharpe, S. W., Sams, R. L., and Johnson, T. J. Quantitative infrared absorption cross sections of isoprene for atmospheric measurements. Germany: N. p., 2014. Web. doi:10.5194/amt-7-3839-2014.
Brauer, C. S., Blake, T. A., Guenther, A. B., Sharpe, S. W., Sams, R. L., & Johnson, T. J. Quantitative infrared absorption cross sections of isoprene for atmospheric measurements. Germany. https://doi.org/10.5194/amt-7-3839-2014
Brauer, C. S., Blake, T. A., Guenther, A. B., Sharpe, S. W., Sams, R. L., and Johnson, T. J. Wed . "Quantitative infrared absorption cross sections of isoprene for atmospheric measurements". Germany. https://doi.org/10.5194/amt-7-3839-2014.
@article{osti_1197861,
title = {Quantitative infrared absorption cross sections of isoprene for atmospheric measurements},
author = {Brauer, C. S. and Blake, T. A. and Guenther, A. B. and Sharpe, S. W. and Sams, R. L. and Johnson, T. J.},
abstractNote = {Isoprene (C5H8, 2-methyl-1,3-butadiene) is a volatile organic compound (VOC) and is one of the primary contributors to annual global VOC emissions. Isoprene is produced primarily by vegetation as well as anthropogenic sources, and its OH- and O3-initiated oxidations are a major source of atmospheric oxygenated organics. Few quantitative infrared studies have been reported for isoprene, limiting the ability to quantify isoprene emissions via remote or in situ infrared detection. We thus report absorption cross sections and integrated band intensities for isoprene in the 600–6500 cm-1 region. The pressure-broadened (1 atmosphere N2) spectra were recorded at 278, 298, and 323 K in a 19.94 cm path-length cell at 0.112 cm-1 resolution, using a Bruker IFS 66v/S Fourier transform infrared (FTIR) spectrometer. Composite spectra are derived from a minimum of seven isoprene sample pressures, each at one of three temperatures, and the number densities are normalized to 296 K and 1 atm.},
doi = {10.5194/amt-7-3839-2014},
journal = {Atmospheric Measurement Techniques (Online)},
number = 11,
volume = 7,
place = {Germany},
year = {Wed Nov 19 00:00:00 EST 2014},
month = {Wed Nov 19 00:00:00 EST 2014}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
https://doi.org/10.5194/amt-7-3839-2014

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Cited by: 26 works
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