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Articles 61 - 64 of 64
Full-Text Articles in Chemistry
In-Cloud Oxidation Of So2 By O3 And H2o2: Cloud Chamber Measurements And Modeling Of Particle Growth, Peter F. Caffrey, William Hoppel, Glendon Frick, Louise Pasternack, James Fitzgerald, Dean A. Hegg, Song Gao, W. R. Leaitch, Nicole Shantz, Thomas Albrechcinski, John Ambrusko
In-Cloud Oxidation Of So2 By O3 And H2o2: Cloud Chamber Measurements And Modeling Of Particle Growth, Peter F. Caffrey, William Hoppel, Glendon Frick, Louise Pasternack, James Fitzgerald, Dean A. Hegg, Song Gao, W. R. Leaitch, Nicole Shantz, Thomas Albrechcinski, John Ambrusko
Chemistry and Physics Faculty Articles
Controlled cloud chamber experiments were conducted to measure particle growth resulting from the oxidation of SO2 by O3 and H2O2 in cloud droplets formed on sulfuric acid seed aerosol. Clouds were formed in a 590 m3 environmental chamber with total liquid water contents ranging from 0.3–0.6 g m−3 and reactant gas concentrations <10 ppbv for SO2 and H2O2 and <70 ppbv for O3. Aerosol growth was measured by comparison of differential mobility analyzer size distributions before and after each 3–4 min cloud cycle. Predictions of aerosol growth were then made with a full microphysical cloud …
Particle Formation And Growth From Ozonolysis Of Α-Pinene, William Hoppel, James Fitzgerald, Glendon Frick, Peter F. Caffrey, Louise Pasternack, Dean A. Hegg, Song Gao, W. Richard Leaitch, Nicole Shantz, Chris Cantrell, Thomas Albrechcinski, John Ambrusko, William Sullivan
Particle Formation And Growth From Ozonolysis Of Α-Pinene, William Hoppel, James Fitzgerald, Glendon Frick, Peter F. Caffrey, Louise Pasternack, Dean A. Hegg, Song Gao, W. Richard Leaitch, Nicole Shantz, Chris Cantrell, Thomas Albrechcinski, John Ambrusko, William Sullivan
Chemistry and Physics Faculty Articles
Observations of particle nucleation and growth during ozonolysis of α-pinene were carried out in Calspan's 600 m3 environmental chamber utilizing relatively low concentrations of α-pinene (15 ppb) and ozone (100 ppb). Model simulations with a comprehensive sectional aerosol model which incorporated the relevant gas-phase chemistry show that the observed evolution of the size distribution could be simulated within the accuracy of the experiment by assuming only one condensable product produced with a molar yield of 5% to 6% and a saturation vapor pressure (SVP) of about 0.01 ppb or less. While only one component was required to simulate the …
The Tetramethylpiperidinyl-1-Oxide Anion (Tmpo-) As A Ligand In Lanthanide Chemistry: Synthesis Of The Per(Tmpo-) Complex [(Onc5h6me4)2sm(Μ-Onc5h6me4)]2, William J. Evans, Jeremy M. Perotti, Robert J. Doedens, Joseph W. Ziller
The Tetramethylpiperidinyl-1-Oxide Anion (Tmpo-) As A Ligand In Lanthanide Chemistry: Synthesis Of The Per(Tmpo-) Complex [(Onc5h6me4)2sm(Μ-Onc5h6me4)]2, William J. Evans, Jeremy M. Perotti, Robert J. Doedens, Joseph W. Ziller
Chemistry and Physics Faculty Articles
(C5Me5)3Sm reacts with the free radical 2,2,6,6-tetramethylpiperidinyl-1-oxy (TMPO) to form (C5Me5)2 and the per nitroxide [(η1-ONC5H6Me4)2 Sm(μ-η1∶η2-ONC5H 6Me4)]2
Oxidation Of [(Cyclic Triamine)(1,5-Cyclooctadiene)Iridium]+ Cations By Hydrogen Peroxide Forms Metallaoxetanes, Thomas C. Flood, Masanori Iimura, Jeremy M. Perotti, Arnold L. Rheingold, Thomas E. Concolino
Oxidation Of [(Cyclic Triamine)(1,5-Cyclooctadiene)Iridium]+ Cations By Hydrogen Peroxide Forms Metallaoxetanes, Thomas C. Flood, Masanori Iimura, Jeremy M. Perotti, Arnold L. Rheingold, Thomas E. Concolino
Chemistry and Physics Faculty Articles
Iridaoxetane 3 formed by oxidation of 1 with aqueous H2O2 is isolated and characterized, providing a rare example of formation of a metallaoxetane by direct oxidation of a metal–alkene complex.