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A method of calibration of the formic acid monomer concentration in the gas phase

  • Original Papers
  • Organic Analysis/Materials
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Abstract

Pyrolysis of t-butyl formate, (CH3)3C-O-CHO, has been carried out in a carrier gas stream of Ar or N2 in a temperature range of 200–400°C. Between 200 and 300°C, the pyrolysis yielded an equimolar mixture of HCOOH and (CH3)2C=CH2. The results have been used as a calibration method for determining the concentration of the gas-phase HCOOH monomer without interference from the formation of the formic acid dimer. Using this technique, the gas-phase infrared absorption cross-section of HCOOH at 1105 cm−1 (peak to valley) for the resolution of 0.5 cm−1 has been determined to be 6.76×10−19 cm2 molecule−1.

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Authors and Affiliations

  1. Division of Atmospheric Chemistry, Max-Planck-Institut für Chemie, Postfach 3060, D-55020, Mainz, Germany

    Matthias Finkbeiner, Peter Neeb, Osamu Horie & Geert K. Moortgat

Authors
  1. Matthias Finkbeiner
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  2. Peter Neeb
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  3. Osamu Horie
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  4. Geert K. Moortgat
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Finkbeiner, M., Neeb, P., Horie, O. et al. A method of calibration of the formic acid monomer concentration in the gas phase. Fresenius J Anal Chem 351, 521–525 (1995). https://doi.org/10.1007/BF00322726

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  • DOI: https://doi.org/10.1007/BF00322726

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