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Author : R. Chirico
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (956 download)
Download or read book Atmospheric Chemistry of Gas Phase and Particle Associated Polyciclic Aromatic Hydrocarbons written by R. Chirico and published by . This book was released on 2007 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : R. Chirico
Publisher :
ISBN 13 :
Total Pages : 40 pages
Book Rating : 4.:/5 (126 download)
Download or read book Atmospheric Chemistry of Gas-phase and Particle-associted Polycyclic Aromatic Hydrocarbons written by R. Chirico and published by . This book was released on 2007 with total page 40 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Douglas A. Lane
Publisher : CRC Press
ISBN 13 : 1000124789
Total Pages : 415 pages
Book Rating : 4.0/5 (1 download)
Download or read book Gas and Particle Phase Measurements of Atmospheric Organic Compounds written by Douglas A. Lane and published by CRC Press. This book was released on 2020-11-17 with total page 415 pages. Available in PDF, EPUB and Kindle. Book excerpt: It is becoming increasingly important to understand how and why semivolatile atmospheric pollutants partition between gas phase and particulate matter in the atmosphere. In this text the world's leading researchers in the field explain the significance of gas/particle ratios; physical and chemical parameters determining how semivolatiles partition in the atmosphere; how gas/particle ratio measurements are made; what artefacts occur during sampling; and novel new techniques and instruments for obtaining artefact-free results. Intended to be a reference book and a guide for those who study the gas/particle ratios of semivolatile atmospheric compounds. This book will be of interest to beginners in the field as well as those who have been involved in the field for many years and would like, in a single reference text, a comprehensive compendium of what is known about the theory and practice of gas/particle phase measurements.
Author : Fabienne Reisen
Publisher :
ISBN 13 :
Total Pages : 706 pages
Book Rating : 4.3/5 (121 download)
Download or read book Atmospheric Chemistry and Measurements of Vehicle-derived Polycyclic Aromatic Compounds written by Fabienne Reisen and published by . This book was released on 2003 with total page 706 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Kazuichi Hayakawa
Publisher : Springer
ISBN 13 : 9811067759
Total Pages : 267 pages
Book Rating : 4.8/5 (11 download)
Download or read book Polycyclic Aromatic Hydrocarbons written by Kazuichi Hayakawa and published by Springer. This book was released on 2018-02-05 with total page 267 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book reviews Polycyclic Aromatic Hydrocarbons (PAHs) and Nitropolycyclic Aromatic Hydrocarbons (NPAHs) contamination in the context of environmental pollution in Asia. It is comprised of the following sections: 1. Fundamental Chemistry and General Characteristics; 2. Analytical Methods; 3. Emission Source and Atmospheric Behavior; 4. Atmospheric Polycyclic Aromatic Hydrocarbons and PM2.5; 5. Polycyclic Aromatic Hydrocarbons in Marine Environments; 6. Metabolic Activation/Toxicities; and 7. Environmental Standards and Guidelines. This volume concentrates on the Far East due to the massive consumption of coal and petroleum in China, which has led to considerable levels of air pollution. High concentration of atmospheric PM2.5 in Beijing have been reported since January 2013 and exposure to such high concentrations may cause respiratory, cardiac and lung diseases. Gathering contributions from international experts, this volume provides a valuable reference guide for global researchers and students interested in learning from the East Asian experience.
Author :
Publisher : World Health Organization
ISBN 13 :
Total Pages : 488 pages
Book Rating : 4.:/5 (1 download)
Download or read book WHO Guidelines for Indoor Air Quality written by and published by World Health Organization. This book was released on 2010 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents WHO guidelines for the protection of public health from risks due to a number of chemicals commonly present in indoor air. The substances considered in this review, i.e. benzene, carbon monoxide, formaldehyde, naphthalene, nitrogen dioxide, polycyclic aromatic hydrocarbons (especially benzo[a]pyrene), radon, trichloroethylene and tetrachloroethylene, have indoor sources, are known in respect of their hazardousness to health and are often found indoors in concentrations of health concern. The guidelines are targeted at public health professionals involved in preventing health risks of environmental exposures, as well as specialists and authorities involved in the design and use of buildings, indoor materials and products. They provide a scientific basis for legally enforceable standards.
Author : Jack G. Calvert
Publisher : Oxford University Press
ISBN 13 : 9780199771547
Total Pages : 570 pages
Book Rating : 4.7/5 (715 download)
Download or read book The Mechanisms of Atmospheric Oxidation of the Aromatic Hydrocarbons written by Jack G. Calvert and published by Oxford University Press. This book was released on 2002-02-14 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt: This text reviews many of the aspects of the chemistry of the aromatic hydrocarbons and a consensus evaluation of the data by seven of the leading atmospheric scientists. The book covers topics ranging from the relative importance of the compounds in ozone and haze development to methods of estimating elemantary rate coefficients based on structural features of the compounds to mechanisms of aerosol generation and atmostpheric reaction of the polycyclic compounds to photochemical processes. It identifies features of the aromatic hydrocarbons requiring further study and appendicies give the structural formulas and nomenclature of the compounds reviewed in the book.
Author : Antonius Indarto
Publisher : Universal-Publishers
ISBN 13 : 1599423340
Total Pages : pages
Book Rating : 4.5/5 (994 download)
Download or read book Theoretical Modelling and Mechanistic Study of the Formation and Atmospheric Transformations of Polycyclic Aromatic Compounds and Carbonaceous Particles written by Antonius Indarto and published by Universal-Publishers. This book was released on 2010-06-11 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycyclic Aromatic Hydrocarbons (PAHs) and soot share the same origin (incomplete combustion or pyrolysis) and nature, namely structural and electronic features. The purpose of the research work discussed in this thesis is to offer a theoretical contribution to elucidate some aspects of PAH and soot particle formation. The interest in carrying out such a work lies on one hand in the ubiquitous presence of both species in the environment, on the other hand on the concern for their impact on both human health, specifically involving the respiratory system, and climate, in particular as regards global warming. Thus, a better knowledge on the formation mechanisms of PAHs and soot could then help the efforts to reduce their concentration in our atmosphere. Since the formation mechanisms still presents unclear aspects, the suggestions and indications which can be offered by a theoretical study come out to be complementary to the large amount of experimental data collected so far. In setting up models aimed to mimic what happens in real pyrolysis or combustion situations, we have exploited the fact that PAHs and soot share as a common trait the presence of condensed unsaturated cycles (whose aromatic character can be variable). Thus, though types of soot of different origin will exhibit, on a larger scale, a variety of structural traits, we have chosen an assortment of PAH-like models to study different processes, together with other smaller unsaturated closed and open shell species that are known to play a role in the synthesis course. A preliminary phase of the study was aimed to assess which computational level could be both dependable and affordable to investigate the growth of a PAH-like radical when it is adsorbed onto soot platelets (particle phase). Then the Bittner-Howard variant of the widely accepted Hydrogen Abstraction Acetylene Addition (HACA) growth mechanism has been explored by Density Functional Theory (DFT) at the level mentioned above, both in the gas and particle phases, and over a wide range of temperatures. A parallel mechanism, differing from HACA, based on polyynes and characterized by the proliferation of radical centers, has also been studied for a variety of models at a multiconfigurational theory level. To the end, we have explored several reaction pathways starting from the addition of the propargyl radical to butadiyne.
Author :
Publisher :
ISBN 13 :
Total Pages : 500 pages
Book Rating : 4.3/5 (91 download)
Download or read book Toxicological Profile for Polycyclic Aromatic Hydrocarbons written by and published by . This book was released on 1995 with total page 500 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Patricia Thavivone Phousongphouang
Publisher :
ISBN 13 :
Total Pages : 470 pages
Book Rating : 4.3/5 (121 download)
Download or read book The Atmospheric Chemistry, Human Cell Mutagenicity, and Ambient Detection of Selected Polycyclic Aromatic Compounds written by Patricia Thavivone Phousongphouang and published by . This book was released on 2002 with total page 470 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Narumol Jariyasopit
Publisher :
ISBN 13 :
Total Pages : 192 pages
Book Rating : 4.:/5 (847 download)
Download or read book The Atmospheric Chemistry of Particulate-bound Polycyclic Aromatic Hydrocarbons written by Narumol Jariyasopit and published by . This book was released on 2013 with total page 192 pages. Available in PDF, EPUB and Kindle. Book excerpt: The trans-Pacific atmospheric transport of particulate matter (PM)-bound polycyclic aromatic hydrocarbons (PAHs) to remote sites in western North America has been well documented and has triggered research questions regarding to atmospheric transformation of PM-bound PAHs and the potential impacts on human health from their inhalation exposure. In this dissertation, field measurements, theoretical studies, laboratory experiments, and mutagenicity studies were used to begin the address the questions as to whether PM-bound PAHs undergo atmospheric transformation into mutagenic nitro-PAHs (NPAHs) during trans-Pacific atmospheric transport. PM extracts were tested in the Salmonella mutagenicity assay, using Salmonella typhimurium strain TA98 (with and without metabolic activation), to determine the mutagenic activities in relation to the chemical composition of the extracts. The sampling of atmospheric PM with diameter
Author : Bjorseth
Publisher : CRC Press
ISBN 13 : 9780824774424
Total Pages : 434 pages
Book Rating : 4.7/5 (744 download)
Download or read book Handbook of Polycyclic Aromatic Hydrocarbons written by Bjorseth and published by CRC Press. This book was released on 1985-12-06 with total page 434 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume concerns sources of polycyclic aromatic hydrocarbons (PAH), their emission factors, and relative importance. It deals with exposure, uptake, metabolism, and detection of PAH in the human body. The volume contains an update of information in environmental and biochemical studies of PAH.
Author : Fathi Zereini
Publisher : Springer Science & Business Media
ISBN 13 : 3642122787
Total Pages : 663 pages
Book Rating : 4.6/5 (421 download)
Download or read book Urban Airborne Particulate Matter written by Fathi Zereini and published by Springer Science & Business Media. This book was released on 2011-02-16 with total page 663 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book presents the most up-to-date research and information regarding the origin, chemistry, fate and health impacts of airborne particulate matter in urban areas, a topic which has received a great deal of attention in recent years due to documented relationships between exposure and health effects such as asthma. With internationally recognised researchers and academics presenting their work and key concepts and approaches from a variety of disciplines, including environmental and analytical chemistry, biology, toxicology, mineralogy and the geosciences, this book addresses the topic of urban airborne particulate matter in a comprehensive, multidisciplinary manner. Topics and research addressed in the book range from common methodological approaches used to sample and analyse the composition of airborne particulates to our knowledge regarding their potential to impact human health and the various policy approaches taken internationally to regulate particulate matter levels.
Author : Carey Lee Friedman
Publisher :
ISBN 13 :
Total Pages : 9 pages
Book Rating : 4.:/5 (819 download)
Download or read book Long-range Atmospheric Transport of Polycyclic Aromatic Hydrocarbons written by Carey Lee Friedman and published by . This book was released on 2012 with total page 9 pages. Available in PDF, EPUB and Kindle. Book excerpt: We use the global 3-D chemical transport model GEOS-Chem to simulate long-range atmospheric transport of polycyclic aromatic hydrocarbons (PAHs). To evaluate the model's ability to simulate PAHs with different volatilities, we conduct analyses for phenanthrene (PHE), pyrene (PYR), and benzo[a]pyrene (BaP). GEOS-Chem captures observed seasonal trends with no statistically significant difference between simulated and measured mean annual concentrations. GEOS-Chem also captures variability in observed concentrations at nonurban sites (r = 0.64, 0.72, and 0.74, for PHE, PYR, and BaP). Sensitivity simulations suggest snow/ice scavenging is important for gas-phase PAHs, and on-particle oxidation and temperature-dependency of gas-particle partitioning have greater effects on transport than irreversible partitioning or increased particle concentrations. GEOS-Chem estimates mean atmospheric lifetimes of
Author : Daekyun Kim
Publisher :
ISBN 13 :
Total Pages : 234 pages
Book Rating : 4.:/5 (81 download)
Download or read book The Environmental Fate of Polycyclic Aromatic Hydrocarbons Associated with Particles written by Daekyun Kim and published by . This book was released on 2008 with total page 234 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author : Lidia Morawska
Publisher : John Wiley & Sons
ISBN 13 : 3527609202
Total Pages : 467 pages
Book Rating : 4.5/5 (276 download)
Download or read book Indoor Environment written by Lidia Morawska and published by John Wiley & Sons. This book was released on 2006-12-13 with total page 467 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering the fundamentals of air-borne particles and settled dust in the indoor environment, this handy reference investigates: * relevant definitions and terminology, * characteristics, * sources, * sampling techniques and instrumentation, * exposure assessment, * monitoring methods. The result is a useful and comprehensive overview for chemists, physicists and biologists, postgraduate students, medical practitioners, occupational health professionals, building owners and managers, building, construction and air-conditioning engineers, architects, environmental lawyers, government and regulatory professionals.
Author : Peter E. T. Douben
Publisher : John Wiley & Sons
ISBN 13 : 047086429X
Total Pages : 404 pages
Book Rating : 4.4/5 (78 download)
Download or read book PAHs written by Peter E. T. Douben and published by John Wiley & Sons. This book was released on 2003-07-25 with total page 404 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycyclic aromatic hydrocarbons (PAHs), or polyarenes, are one of the largest and most structurally diverse class of organic molecules known. High percentages of polyarenes, representing a wide range of molecular sizes and structural types, are present in coal tars and petroleum residues. The major sources of PAHs are crude oil, coal and oil shale. The fuels produced from these fossil sources constitute the primary source of energy for the industrial nations of the world, and the petrochemicals from these raw materials are the basis of the synthetic fibre and plastics industries. PAHs are however, widespread pollutants and their impact on the environment and human health must be monitored and controlled. This book will review and assess our scientific understanding of the ecological exposure and effects PAHs have in different environments and habitats. It will accomplish this by taking the recipients of the pollution in the environment as starting points and working its way back through pathways to access what is required for our understanding of effects and rationale for control. Although this book will concentrate on ecological exposure of PAHs, the general impacts of PAHs on human populations will be touched upon. It is thought to be the first book to focus on the ecological aspects of PAHs.
