Author/Authors :
Carr، نويسنده , , Scott A. and Baeza-Romero، نويسنده , , M. Teresa and Blitz، نويسنده , , Mark A. and Pilling، نويسنده , , Michael J. and Heard، نويسنده , , Dwayne E. and Seakins، نويسنده , , Paul W.، نويسنده ,
Abstract :
Laser flash photolysis of CH3C(O)OH at 248 nm was used to create equal zero time yields of CH3CO and OH. The absolute OH yield from the CH3CO + O2 (+M) reaction was determined by following the OH temporal profile using the zero time OH concentration as an internal standard. The OH yield from CH3CO + O2 (+M) was observed to decrease with increasing pressure with an extrapolated zero pressure yield close to unity (1.1 ± 0.2, quoted uncertainties correspond to 95% confidence limits). The results are in quantitative agreement with those obtained from 248 nm acetone photolysis in the presence of O2.
