Download or read book Kinetics and Products of the Reactions of Hydroxyl Radicals with Selected Volatile Organic Compounds Including Oxygenated Compounds written by Heidi Lynn Bethel and published by . This book was released on 2002 with total page 414 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetics and Mechanisms of the Gas phase Reactions of the Hydroxyl Radical with Organic Compounds written by Roger Atkinson and published by American Institute of Physics. This book was released on 1989 with total page 270 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetics and Mechanisms of the Hydroxyl Radical Initiated Oxidation of Oxygenated Volatile Organic Compounds Under Simulated Tropospheric Conditions written by Konrad Stemmler and published by . This book was released on 1998 with total page 168 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Volatile Organic Compounds in the Atmosphere written by Ralf Koppmann and published by John Wiley & Sons. This book was released on 2008-04-15 with total page 512 pages. Available in PDF, EPUB and Kindle. Book excerpt: Every day, large quantities of volatile organic compounds (VOCs) are emitted into the atmosphere from both anthropogenic and natural sources. The formation of gaseous and particulate secondary products caused by oxidation of VOCs is one of the largest unknowns in the quantitative prediction of the earth’s climate on a regional and global scale, and on the understanding of local air quality. To be able to model and control their impact, it is essential to understand the sources of VOCs, their distribution in the atmosphere and the chemical transformations which remove these compounds from the atmosphere. In recent years techniques for the analysis of organic compounds in the atmosphere have been developed to increase the spectrum of detectable compounds and their detection limits. New methods have been introduced to increase the time resolution of those measurements and to resolve more complex mixtures of organic compounds. Volatile Organic Compounds in the Atmosphere describes the current state of knowledge of the chemistry of VOCs as well as the methods and techniques to analyse gaseous and particulate organic compounds in the atmosphere. The aim is to provide an authoritative review to address the needs of both graduate students and active researchers in the field of atmospheric chemistry research.

Download or read book Kinetics and Products of Reactions Between Semi volatile Organic Pollutants and the Hydroxyl Radical written by William Wayne Brubaker and published by . This book was released on 1998 with total page 294 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Activation Energies for Reactions of Hydroxyl Radicals with Hydrogen and Carbon Monoxide written by Edgar L. Wong and published by . This book was released on 1970 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book The Hydroxyl Radical Reaction Rate Constant and Products of Dimethyl Succinate written by and published by . This book was released on 2008 with total page 32 pages. Available in PDF, EPUB and Kindle. Book excerpt: The relative rate technique has been used to examine the kinetics for the reaction of the hydroxyl radical (OH) with dimethyl succinate (DMS, CH3OC(=O)CH2CH2C(=O)OCH3). The measured rate constant for OH + DMS was 1.5 +/- 0.4 x 10(exp -12) cc/molecule/s at 297 +/- 3 deg K and 1 atmosphere total pressure. This is in agreement with the predicted value of 1.15 x 10(exp -12) cc/molecule/s determined by structure activity relationships. To more clearly define DMS's atmospheric degradation mechanism, the products of the OH + DMS reaction were also investigated. The only primary product detected was mono methyl succinate (MMS, CH3OC(=O)CH2CH2C(=O)OH)) at a yield of only 2.17 +/- 0.25%. Extensive efforts were used to identify other primary products but none were measured. Formic acid (HC(=O)OH); however, was observed as a secondary product being formed at a rate of (4.6 +/- 1.3) x 10(exp 14) molecules/second, 60 minutes after initiating the OH + DMS reaction. Formic acid is believed to be a degradation product of the primary product, methyl glyoxylate (MG, CH3OC(=O)C(=O)H). Product formation pathways are discussed in light of current understanding of the atmospheric chemistry of oxygenated organic compounds.

Download or read book Kinetic Studies of Reaction of Benzyloxy Radical with Oxygen written by Yue Zeng and published by LAP Lambert Academic Publishing. This book was released on 2012-06 with total page 112 pages. Available in PDF, EPUB and Kindle. Book excerpt: Alkoxy radicals are key intermediates of the degradation of Volatile Organic Compounds (VOCs). Of the three major reaction pathways, reaction of alkoxy radicals with molecular oxygen is more consistently important than unimolecular decomposition and isomerization. The kinetics of alkoxy radicals reacting with oxygen has been well studied for small alkoxy radicals derived from alkanes; however, there was no data for larger alkoxy radicals derived from more complicated organic compounds, such as aromatic hydrocarbons. In this study, benzyloxy (C6H5CH2O ) has been investigated in order to understand the effect of the aromatic ring on the kinetics of alkoxy radicals reaction with oxygen. The ratio of reactions benzyloxy with oxygen and versus nitrogen dioxide has been investigated by relative rate constant method with product determination by GC-FID. Then rate constants of these two reactions have been estimated and input in kinetic model by Kintecus software. Model and experiment results have been compared and suggestions for improvement have been addressed."

Download or read book Hydroxyl Radicals Properties Functions and Impact written by Sidney Pierce and published by . This book was released on 2020-03-09 with total page 83 pages. Available in PDF, EPUB and Kindle. Book excerpt: To understand the reaction of OH in detail at the surface of a photocatalyst, an electrochemical analysis of the irradiated semiconductors was attempted via the fluorescence probe method. For the single crystal rutile TiO2 electrodes, the facet dependence on the OH formation could be observed along with oxygen evolution by the photooxidation of water. In the subsequent study, the authors present the kinetics and mechanism of the gas-phase reaction of CH3CH2OCH2CH2Cl (2-chloroethyl ethyl ether, 2ClEEE) with OH radical using quantum chemical methods. Optimization and frequency calculations of all the species involved in the reactions were carried out at BHandHLYP/6-311++G(2d,2p) level of theory. The closing chapter is focused on the effect of hydroxyl radical and the regulation mechanism. Host immune systems generate reactive oxygen species) in order to defend microbial pathogens. Reactive oxygen species induce oxidative stress and encompass nonradical oxidants, such as hydrogen peroxide and singlet oxygen, as well as oxygen free radicals, such as superoxide anion radical and hydroxyl radical.

Download or read book A Kinetic and Mechanistic Study of the Reactions of Hydroxyl Radicals and Chlorine Atoms with Halogenated and Oxygenated Unsaturated Compounds written by Enda Morgan and published by . This book was released on 2006 with total page 224 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Reaction Rates of Semi volatile Organic Compounds with the Hydroxyl Radical written by Philip Neal Anderson and published by . This book was released on 1995 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetics of Hydroxyl Radical Reactions written by Andrés Pastrana Arango and published by . This book was released on 1973 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Study of the Hydroxyl Radical Initiated Photooxidation of Volatile Organic Compounds and the Application of These Reactions written by Clifford Koenig and published by . This book was released on 2002 with total page 174 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Studies of the Atmospheric Chemsitry of Energy Related Volatile Organic Compounds and of Their Atmospheric Reaction Products written by and published by . This book was released on 2007 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: The focus of this contract was to investigate selected aspects of the atmospheric chemistry of volatile organic compounds (VOCs) emitted into the atmosphere from energy-related sources as well as from biogenic sources. The classes of VOCs studied were polycyclic aromatic hydrocarbons (PAHs) and nitro-PAHs, the biogenic VOCs isoprene, 2-methyl-3-buten-2-ol and cis-3-hexen-1-ol, alkenes (including alkenes emitted from vegetation) and their oxygenated atmospheric reaction products, and a series of oxygenated carbonyl and hydroxycarbonyl compounds formed as atmospheric reaction products of aromatic hydrocarbons and other VOCs. Large volume reaction chambers were used to investigate the kinetics and/or products of photolysis and of the gas-phase reactions of these organic compounds with hydroxyl (OH) radicals, nitrate (NO3) radicals, and ozone (O3), using an array of analytical instrumentation to analyze the reactants and products (including gas chromatography, in situ Fourier transform infrared spectroscopy, and direct air sampling atmospheric pressure ionization tandem mass spectrometry). The following studies were carried out. The photolysis rates of 1- and 2-nitronaphthalene and of eleven isomeric methylnitronaphthalenes were measured indoors using blacklamp irradiation and outdoors using natural sunlight. Rate constants were measured for the gas-phase reactions of OH radicals, Cl atoms and NO3 radicals with naphthalene, 1- and 2-methylnaphthalene, 1- and 2-ethylnaphthalene and the ten dimethylnaphthalene isomers. Rate constants were measured for the gas-phase reactions of OH radicals with four unsaturated carbonyls and with a series of hydroxyaldehydes formed as atmospheric reaction products of other VOCs, and for the gas-phase reactions of O3 with a series of cycloalkenes. Products of the gas-phase reactions of OH radicals and O3 with a series of biogenically emitted VOCs were identified and quantified. Ambient atmospheric measurements of the concentrations of a number of PAHs, nitro-PAHs, nitrated polycyclic aromatic compounds and biogenic VOCs were carried out in the Los Angeles air basin. In addition to these laboratory and ambient field studies, two literature reviews of VOC atmospheric chemistry and of the kinetics of the reactions of OH radicals with alkanes were also carried out. This research has been reported in 15 peer-reviewed publications.

Download or read book Hydroxyl Radical Reactions with Volatile Organic Compounds Under Simulated Tropospheric Conditions written by Marco Semadeni and published by . This book was released on 1994 with total page 141 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Kinetics and Mechanisms of the Reactions of Hydroxyl Radicals and Chlorine Atoms with Halogenated Carbonyl Compounds written by Donncha J. P. Scollard and published by . This book was released on 1992 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Quantifying Net Hydroxyl Radical Consumption from the Oxidation of Volatile Organic Compounds and Subsequent Oxidation Products Using a Potential Aerosol Mass Chamber written by Tiffany B. Samuelson and published by . This book was released on 2012 with total page 101 pages. Available in PDF, EPUB and Kindle. Book excerpt: