Is the reaction between CH3C(O)O-2 and NO3 important in the night-time troposphere? / CanosaMas, CE; King, Martin; Lopez, R; Percival, CJ; Wayne, RP; Shallcross, DE; Pyle, JA; Daele, V.

In: Journal Of The Chemical Society-Faraday Transactions, Vol. 92, No. 12, 01.01.1996, p. 2211-2222.

Research output: Contribution to journalArticle

Published
  • CE CanosaMas
  • Martin King
  • R Lopez
  • CJ Percival
  • RP Wayne
  • DE Shallcross
  • JA Pyle
  • V Daele

Abstract

A discharge-flow system equipped with a laser-induced fluorescence (LIF) cell to detect NO2 and a multi-pass absorption cell to detect NO3 has been used to study the reactionCH3C(O)O-2+NO3-->CH3C(O)O+NO2+O-2 (1)at T = 403-443 K and P = 2-2.4 Torr. The rate constant was found to be independent of temperature with a value of k(1) = (4+/-1) x 10(-12) cm(3) molecule(-1) s(-1). The likely mechanism for the reaction is discussed. The atmospheric implications of reaction (1) are investigated using a range of models and several case studies are presented, comparing model results with actual held measurements. It is concluded that reaction (1) participates in a cycle which can generate OH at night. This reaction cycle (see text) can operate throughout the continental boundary layer, but may even occur in remote regions.
Original languageEnglish
Pages (from-to)2211-2222
Number of pages12
JournalJournal Of The Chemical Society-Faraday Transactions
Volume92
Issue number12
Publication statusPublished - 1 Jan 1996

ID: 454531