The gas-phase reaction of ClONO2with hydrogen chloride

✍ Scribed by Roger Atkinson; Sara M. Aschmann; Ernesto C. Tuazon; Mark A. Goodman; Arthur M. Winer

• Publisher: Springer Netherlands
• Year: 1987
• Tongue: English
• Weight: 430 KB
• Volume: 5
• Category: Article
• ISSN: 0167-7764
• DOI: 10.1007/bf00192504

✦ Synopsis

The gas-phase reaction ofC1ONO 2 with HC1 was investigated using two large-volume environmental chambers with analysis by in situ long pathlength Fourier transform infrared absorption spectroscopy. In these chambers the reaction was observed to proceed, at least in part, by heterogeneous routes, and an upper limit to the rate constant for the homogeneous gas-phase reaction of k(C1ONO 2 + HC1) < 1.5 x 10 -t9 cm 3 molecule -~ s -1 was derived at 298-+ 2K. Assuming that this room-temperature upper limit to the rate constant is applicable to stratospheric temperatures, this homogeneous gas-phase reaction can be estimated to be of negligible importance as a C1ONO 2 loss process in the stratosphere.