Evolution in the Reactivity of Citric Acid toward Heterogeneous Oxidation by Gas-Phase OH Radicals

2018 ◽  
Vol 2 (12) ◽  
pp. 1323-1329 ◽  
Author(s):  
Man Mei Chim ◽  
Christopher Y. Lim ◽  
Jesse H. Kroll ◽  
Man Nin Chan
Keyword(s):  
Citric Acid ◽  
Gas Phase ◽  
Oh Radicals ◽  
Heterogeneous Oxidation

scholarly journals Influence of Relative Humidity on the Heterogeneous Oxidation of Secondary Organic Aerosol

2018 ◽  
Author(s):  
Ziyue Li ◽  
Katherine A. Smith ◽  
Christopher D. Cappa
Keyword(s):  
Relative Humidity ◽  
Gas Phase ◽  
Secondary Organic Aerosol ◽  
Complex Mixture ◽  
Organic Aerosol ◽  
Oh Radicals ◽  
Particle Phase ◽  
Particle Volume ◽  
Heterogeneous Oxidation ◽  
Substantial Impact

Abstract. Secondary organic aerosol (SOA) is a complex mixture of hundreds of semi volatile to extremely low volatility organic compounds that are chemically processed in the atmosphere, including via heterogeneous oxidation by gas phase radicals. Relative humidity (RH) has a substantial impact on particle phase, which can affect how SOA evolves in the atmosphere. In this study, SOA from dark α-pinene ozonolysis is heterogeneously aged by OH radicals in a flowtube at low and high RH. At high RH (RH = 89 %) there is substantial loss of particle volume (~ 60 %) at an equivalent atmospheric OH exposure of 3 weeks. In contrast, at low RH (RH = 25 %) there is little mass loss (

Atmospheric chemistry of trans-CF3CHCHCl: Kinetics of the gas-phase reactions with Cl atoms, OH radicals, and O3

2008 ◽  
Vol 199 (1) ◽  
pp. 92-97 ◽  
Author(s):  
M.P. Sulbaek Andersen ◽  
E.J.K. Nilsson ◽  
O.J. Nielsen ◽  
M.S. Johnson ◽  
M.D. Hurley ◽  
...  
Keyword(s):  
Gas Phase ◽  
Atmospheric Chemistry ◽  
Oh Radicals ◽  
Gas Phase Reactions ◽  
Kinetics Of ◽  
Cl Atoms

Formation of OH radicals in the gas phase ozonolysis of alkenes: the unexpected role of carbonyl oxides

1996 ◽  
Vol 252 (3-4) ◽  
pp. 221-229 ◽  
Author(s):  
Roland Gutbrod ◽  
Ralph N. Schindler ◽  
Elfi Kraka ◽  
Dieter Cremer
Keyword(s):  
Gas Phase ◽  
Oh Radicals ◽  
Carbonyl Oxides
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