Atmospheric and Aerosol Chemistry PDF Download
Are you looking for read ebook online? Search for your book and save it on your Kindle device, PC, phones or tablets. Download Atmospheric and Aerosol Chemistry PDF full book. Access full book title Atmospheric and Aerosol Chemistry by V. Faye McNeill. Download full books in PDF and EPUB format.
Author: V. Faye McNeill
Publisher: Springer
ISBN: 3642412157
Category : Science
Languages : en
Pages : 267
Get Book Here
Book Description
Christian George, Barbara D’Anna, Hartmut Herrmann, Christian Weller, Veronica Vaida, D. J. Donaldson, Thorsten Bartels-Rausch, Markus Ammann - Emerging Areas in Atmospheric Photochemistry. Lisa Whalley, Daniel Stone, Dwayne Heard - New Insights into the Tropospheric Oxidation of Isoprene: Combining Field Measurements, Laboratory Studies, Chemical Modelling and Quantum Theory. Neil M. Donahue, Allen L. Robinson, Erica R. Trump, Ilona Riipinen, Jesse H. Kroll - Volatility and Aging of Atmospheric Organic Aerosol. P. A. Ariya, G. Kos, R. Mortazavi, E. D. Hudson, V. Kanthasamy, N. Eltouny, J. Sun, C. Wilde - Bio-Organic Materials in the Atmosphere and Snow: Measurement and Characterization. V. Faye McNeill, Neha Sareen, Allison N. Schwier - Surface-Active Organics in Atmospheric Aerosols.
Author: V. Faye McNeill
Publisher: Springer
ISBN: 3642412157
Category : Science
Languages : en
Pages : 267
Get Book Here
Book Description
Christian George, Barbara D’Anna, Hartmut Herrmann, Christian Weller, Veronica Vaida, D. J. Donaldson, Thorsten Bartels-Rausch, Markus Ammann - Emerging Areas in Atmospheric Photochemistry. Lisa Whalley, Daniel Stone, Dwayne Heard - New Insights into the Tropospheric Oxidation of Isoprene: Combining Field Measurements, Laboratory Studies, Chemical Modelling and Quantum Theory. Neil M. Donahue, Allen L. Robinson, Erica R. Trump, Ilona Riipinen, Jesse H. Kroll - Volatility and Aging of Atmospheric Organic Aerosol. P. A. Ariya, G. Kos, R. Mortazavi, E. D. Hudson, V. Kanthasamy, N. Eltouny, J. Sun, C. Wilde - Bio-Organic Materials in the Atmosphere and Snow: Measurement and Characterization. V. Faye McNeill, Neha Sareen, Allison N. Schwier - Surface-Active Organics in Atmospheric Aerosols.
Author: Peter Warneck
Publisher: Springer Science & Business Media
ISBN: 3642614450
Category : Science
Languages : en
Pages : 270
Get Book Here
Book Description
The "European Experiment on the Transport and Transformation of Environmentally Relevant Trace Constituents over Europe" (EUROTRAC) was established in 1986 to tackle the scientific problem and combine the expertise, knowledge and resources in Europe, in order to apply them over a large region covering the greater part of the continent. EUROTRAC is a coordinated multidisciplinary scientific research project involving field measurements, laboratory studies, instrument development and development of comprehensive computer models for the simulation of the physical and chemical processes in the lower atmosphere.
Author:
Publisher: Walter de Gruyter GmbH & Co KG
ISBN: 1501519379
Category : Science
Languages : en
Pages : 215
Get Book Here
Book Description
Atmospheric aerosols are an important and a highly complex component of the Earth’s atmosphere that alter the radiative forcing and the chemical composition of the gas phase. These effects have impacts on local air quality and the global climate. Atmospheric Aerosol Chemistry outlines research findings to date in aerosol chemistry and advances in analytical tools used in laboratory studies for studying their surface and bulk reactivity.
Author: National Aeronautics and Space Adm Nasa
Publisher: Independently Published
ISBN: 9781792667183
Category :
Languages : en
Pages : 30
Get Book Here
Book Description
In this report we summarize the results of the two sets of projects funded by the NASA grant NAG2-632, namely investigations of various thermodynamic and nucleation properties of the aqueous acid system which makes up stratospheric aerosols, and measurements of reaction probabilities directly on ice aerosols with sizes corresponding to those of polar stratospheric cloud particles. The results of these investigations are of importance for the assessment of the potential stratospheric effects of future fleets of supersonic aircraft. In particular, the results permit to better estimate the effects of increased amounts of water vapor and nitric acid (which forms from nitrogen oxides) on polar stratospheric clouds and on the chemistry induced by these clouds. Molina, Mario J. Ames Research Center NASA-CR-201407, NAS 1.26:201407 NAG2-632...
Author: Peter Warneck
Publisher: Springer
ISBN: 9783642614460
Category : Science
Languages : en
Pages : 254
Get Book Here
Book Description
The "European Experiment on the Transport and Transformation of Environmentally Relevant Trace Constituents over Europe" (EUROTRAC) was established in 1986 to tackle the scientific problem and combine the expertise, knowledge and resources in Europe, in order to apply them over a large region covering the greater part of the continent. EUROTRAC is a coordinated multidisciplinary scientific research project involving field measurements, laboratory studies, instrument development and development of comprehensive computer models for the simulation of the physical and chemical processes in the lower atmosphere.
Author: Ellen Coddens
Publisher:
ISBN:
Category :
Languages : en
Pages : 258
Get Book Here
Book Description
Atmospheric aerosols can impact Earth's climate and the chemistry of the atmosphere through a variety of processes and pathways. For example, atmospheric aerosols affect Earth's climate directly by scattering or absorbing solar radiation or indirectly by interacting with clouds and impacting their physiochemical properties. Aerosols are unique microenvironments, distinct from the bulk, and therefore their physiochemical properties result in differences between bulk and aerosol phase processes, such as reactivity and kinetics, acidity and interaction with light. Despite the fact that the effects of aerosols on atmospheric chemistry have been studied in previous work, there remains considerable uncertainties associated with aerosol chemistry resulting in gaps between atmospheric chemistry models and field observations. By better understanding chemical processes occurring within aerosols, as well as cloud or fog droplets, and the factors that influence them, we can help reduce some of the uncertainties in atmospheric models. This dissertation investigates sulfur oxidation chemistry in the atmosphere to better understand factors influencing the rate of oxidation and the extent of formation of inorganic sulfate. In particular, we investigated the influence of various atmospherically relevant conditions (presence of organic compounds, ionic strength, etc.) in the oxidation of inorganic S(IV), sulfite/bisulfite, to inorganic S(VI), sulfate/bisulfate, compounds in the presence and absence of transition metals. Most importantly, a new role of transition metal catalyzed formation of organosulfur compounds has been found. Furthermore, in this dissertation, the further development of the Aerosol Optical Tweezer system to study the chemistry within individual aerosols is discussed. Utilizing the Aerosol Optical Tweezer coupled with cavity enhanced Raman spectroscopy it is shown that this method can be used to investigate changes within a droplet, such as: (i) pH changes induced by coalescence with acidic aerosol; (ii) reactions within the droplet, like monitoring oxidation of S(IV) and; (iii) reaction of glyoxal with sulfite to yield organosulfur compounds. The findings presented in this dissertation can improve our understanding of the factors influencing sulfur oxidation chemistry and help to further develop a method to study the chemistry occurring within single aerosols to reduce some of the uncertainty associated with aerosol chemistry to improve atmospheric chemistry models.
Author: Yue Zhang
Publisher: American Chemical Society
ISBN: 0841299293
Category : Science
Languages : en
Pages : 176
Get Book Here
Book Description
The uncertainties in the aerosol effects on radiative forcing limit our knowledge of climate change, presenting us with an important research challenge. Aerosols in Atmospheric Chemistry introduces basic concepts about the characterization, formation, and impacts of ambient aerosol particles as an introduction to graduate students new to the field. Each chapter also provides an up-to-date synopsis of the latest knowledge of aerosol particles in atmospheric chemistry.
Author:
Publisher:
ISBN:
Category :
Languages : en
Pages : 0
Get Book Here
Book Description
Laboratory experiments were performed to investigate the chemistry of aluminum oxide (gamma Al(2)0(3)) aerosol samples upon exposure to NO(x) (NO(x) is NO, NO(2), etc.,) gases. Static aerosol samples were generated in an aerosol chamber and studied at temperatures ranging from 298 to 183 K. Fornier-transform infrared (FTIR) absorption spectroscopy was used to study the aerosol samples over time. Each aerosol was created using the same procedure. First, a reactant gas species, NO or NO(2), was added to the chamber and infrared spectra were collected over a 20-minute time interval to characterize heterogeneous reactions occurring on the chamber walls. Next, an aluminum oxide aerosol was generated by expanding powder into the chamber using nitrogen gas at high pressure. Infrared spectra were then collected at 6-minute intervals for at least 100 minutes to characterize A1(2)O(3)-NO(x) chemistry. The experiments reported on in this paper enabled a quantitative characterization of both the rate of reactant gas uptake and product formation processes to be performed. A quantitative (i.e., stoichiometric) analysis of reactant gas depletion and product gas formation enabled elementary reactions involving aluminum oxide surface hydroxyl sites and NO(x) species to be proposed. (2 tables, 2 figures, 6 refs.).
Author: National Academies of Sciences, Engineering, and Medicine
Publisher: National Academies Press
ISBN: 0309445655
Category : Science
Languages : en
Pages : 227
Get Book Here
Book Description
Our world is changing at an accelerating rate. The global human population has grown from 6.1 billion to 7.1 billion in the last 15 years and is projected to reach 11.2 billion by the end of the century. The distribution of humans across the globe has also shifted, with more than 50 percent of the global population now living in urban areas, compared to 29 percent in 1950. Along with these trends, increasing energy demands, expanding industrial activities, and intensification of agricultural activities worldwide have in turn led to changes in emissions that have altered the composition of the atmosphere. These changes have led to major challenges for society, including deleterious impacts on climate, human and ecosystem health. Climate change is one of the greatest environmental challenges facing society today. Air pollution is a major threat to human health, as one out of eight deaths globally is caused by air pollution. And, future food production and global food security are vulnerable to both global change and air pollution. Atmospheric chemistry research is a key part of understanding and responding to these challenges. The Future of Atmospheric Chemistry Research: Remembering Yesterday, Understanding Today, Anticipating Tomorrow summarizes the rationale and need for supporting a comprehensive U.S. research program in atmospheric chemistry; comments on the broad trends in laboratory, field, satellite, and modeling studies of atmospheric chemistry; determines the priority areas of research for advancing the basic science of atmospheric chemistry; and identifies the highest priority needs for improvements in the research infrastructure to address those priority research topics. This report describes the scientific advances over the past decade in six core areas of atmospheric chemistry: emissions, chemical transformation, oxidants, atmospheric dynamics and circulation, aerosol particles and clouds, and biogeochemical cycles and deposition. This material was developed for the NSF's Atmospheric Chemistry Program; however, the findings will be of interest to other agencies and programs that support atmospheric chemistry research.
Author: Fobang Liu
Publisher: American Chemical Society
ISBN: 0841299811
Category : Science
Languages : en
Pages : 182
Get Book Here
Book Description
Atmospheric aerosols, or particulate matter (PM), are liquid or solid particles suspended in the air. Exposure to ambient PM is associated with multiple diseases and accounts for millions of premature deaths today. Although recognized as an important public health problem, PM’s toxicity and toxicological mechanisms are yet to be understood. Various methodologies and assays (i.e., procedures to determine the composition, quantity, or quality of a substance or a mixture) have been developed or employed to understand the components and characteristics of PM that best determine its toxicity. Efforts have also been spent to study the mechanisms of cellular signaling, stress, response, and physiological change, as well as complex multi-tissue effects upon PM exposure. These assays are diverse, spanning from in vitro acellular assays (i.e., chemical assays) to in vitro cellular and in vivo assays. Given that various methodologies and assays have been developed or employed, this digital primer aims to introduce the methodologies and fundamental principles used to study atmospheric aerosols’ toxicity and emerging new techniques. A comprehensive literature review of the scientific findings using these methodologies and assays is not the focus of this primer. The target audiences are senior undergraduates or beginning graduate students unfamiliar with aerosol science and toxicity measurements. An introductory overview of atmospheric aerosols and the motivations to study their toxicity before a detailed discussion of methodologies and assays in the toxicity research of atmospheric aerosols is provided. Beyond this, Toxicity of Atmospheric Aerosols: Methodologies & Assays serves as an assembly of the various methodologies and assays used in the toxicity research of atmospheric aerosols, saving readers time compared to searching from scattered resources.
