Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Jean-Marc Fracheboud"'
Autor:
Geoffrey S. Tyndall, Jean-Marc Fracheboud, Edgar G. Estupiñan, Sylviane Haberkorn, John J. Orlando, Audrey Zimmer
Publikováno v:
Atmospheric Environment. 33:1621-1629
The rate and mechanism for gas-phase destruction of hydroxyacetone, CH 3 C(O)CH 2 OH, by reaction with OH, Cl-atoms, and by photolysis have been determined. The first quantitative UV absorption spectrum of hydroxyacetone is reported over the waveleng
Autor:
Jean-Marc Fracheboud, Mary K. Gilles, A. R. Ravishankara, Ranajit K. Talukdar, Geoffrey S. Tyndall, Frederique Battin-Leclerc, John J. Orlando
Publikováno v:
Geophysical Research Letters. 24:1091-1094
The quantum yield of O( 1 D), Φ(T), in the 308 nm photolysis of ozone has been shown to decrease very slightly with temperature (T), from 0.79±0.10 at 298 K to 0.73±0.10 at 200 K. At 248 nm, Φ is (0.91± 0.06) independent of temperature (200-320
Autor:
Jean-Marc Fracheboud, Geoffrey S. Tyndall, Trine E. Møgelberg, Timothy J. Wallington, John J. Orlando, Jens Sehested
Publikováno v:
The Journal of Physical Chemistry A. 101:2828-2832
An FTIR/environmental chamber technique was used to study the fate of the alkoxy radical CF3CF2CFHO formed in the atmospheric degradation of HFC-236cb (CF3CF2CFH2). Experiments were performed over the temperature range 228−296 K at 7.8−1000 Torr
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 93:2481-2486
A discharge-flow system equipped with a laser-induced fluorescence cell to detect the methoxyl radical and a quadrupole mass spectrometer to detect products has been used to determine the kinetics of the reactions: CH 3 ONO + F → products (1), CH 3
Autor:
Jean-Marc Fracheboud, P. Biggs, Carlos E. Canosa-Mas, Carl J. Percival, Dudley E. Shallcross, Richard P. Wayne
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 93:379-385
Two low-pressure discharge-flow systems, one equipped with laser-induced fluorescence (LIF) detection of NO 2 and the other mass spectrometric detection of NO 2 , have been employed to determine the rate constant for the self reaction CF 3 O 2 +CF 3
Autor:
Geoffrey S. Tyndall, Trine E. Møgelberg, John J. Orlando, Jens Sehested, Jean-Marc Fracheboud, Ole John Nielsen, Michael D. Hurley, Timothy J. Wallington
Publikováno v:
The Journal of Physical Chemistry. 100:18116-18122
The atmospheric degradation of HFC-134a (CF3CFH2) proceeds via the formation of CF3CFHO radicals. Long path length FTIR environmental chamber techniques were used to study the atmospheric fate of CF3CFHO radicals. Two competing reaction pathways were
Autor:
George Marston, Carlos E. Canosa-Mas, P. Biggs, Dudley E. Shallcross, Richard P. Wayne, Jean-Marc Fracheboud
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 91:3045
A discharge-flow system equipped with a laser-induced fluorescence cell to detect the methoxyl radical and a quadrupole mass spectrometer to detect both the chlorine monoxide and chlorine dioxide radicals has been used to measure the rate constants f
Autor:
P. Biggs, Richard P. Wayne, Jean-Marc Fracheboud, Carlos E. Canosa-Mass, Dudley E. Shallcross
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 91:817
A discharge-flow system equipped with a laser-induced fluorescence cell to detect the ethoxyl radical and an optical absorption cell to detect the nitrate radical has been used to measure the rate constants for the reactions C2H5+ NO3→ products (1)
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 90:1205
The kinetics of the reaction CH3O2+ NO3→ CH3O + NO2+ O2(1) have been studied at 298 K and at pressures between 2 and 3 Torr of helium using the discharge-flow technique combined with laser-induced fluorescence detection of the methoxyl radical and
Publikováno v:
Journal of the Chemical Society, Faraday Transactions. 90:1197
The reactions CH3+ NO3→ products (1), and CH3O + NO3→ products (2), have been studied using a flow system at T= 298 K and at pressures between 0.6 and 8.5 Torr. The laser-induced fluorescence (LIF) technique was used to detect CH3O and multi-pass