Extending The Physicochemical Characterization Of Aerosol Particles In California

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Extending the Physicochemical Characterization of Aerosol Particles in California

Author : Melanie Dorothy Zauscher
Publisher :
ISBN 13 : 9781267513793
Total Pages : 218 pages
Book Rating : 4.5/5 (137 download)

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Book Synopsis Extending the Physicochemical Characterization of Aerosol Particles in California by : Melanie Dorothy Zauscher

Download or read book Extending the Physicochemical Characterization of Aerosol Particles in California written by Melanie Dorothy Zauscher and published by . This book was released on 2012 with total page 218 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerosols affect the radiative balance of earth, alter cloud formation, and adversely impact human health. Knowledge of the physicochemical properties of particles, which can rapidly change, is essential to predict and mitigate their negative impacts. Hence, in-situ measurements of single-particle composition and physical properties are needed. Aerosol time-of-flight mass spectrometry (ATOFMS), which measures the size-resolved chemical mixing state of individual particles, was used to study aerosols at different locations in California. Soot particles internally mixed with soluble ammonium, nitrate, and sulfate transported from the Central Valley were found to be a major source of cloud condensation nuclei in the Sierra Nevada during winter 2010, never identified before. These aged soot particles may be affecting regional cloud microphysics and potentially precipitation. Rapid aging of biomass burning aerosols during intense urban fires were analyzed for the first time via single-particle mass spectrometry throughout the 2007 San Diego Wildfires. Furthermore, estimated size-resolved mass concentrations of particulate matter during the wildfires showed for the first time that particles

Extended Analysis of the CARES Aerosol Chemistry Data to Characterize Sources and Processes of Organic Aerosol in the Sacramento Valley of California

Download Extended Analysis of the CARES Aerosol Chemistry Data to Characterize Sources and Processes of Organic Aerosol in the Sacramento Valley of California PDF Online Free

Author : Qi Zhang
Publisher :
ISBN 13 :
Total Pages : 100 pages
Book Rating : 4.:/5 (318 download)

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Book Synopsis Extended Analysis of the CARES Aerosol Chemistry Data to Characterize Sources and Processes of Organic Aerosol in the Sacramento Valley of California by : Qi Zhang

Download or read book Extended Analysis of the CARES Aerosol Chemistry Data to Characterize Sources and Processes of Organic Aerosol in the Sacramento Valley of California written by Qi Zhang and published by . This book was released on 2014 with total page 100 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Aerosols in California (ACHEX)

Author : California. Air Resources Board
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (437 download)

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Book Synopsis Characterization of Aerosols in California (ACHEX) by : California. Air Resources Board

Download or read book Characterization of Aerosols in California (ACHEX) written by California. Air Resources Board and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Fine Particles

Author : Benjamin Y.H. Liu
Publisher : Elsevier
ISBN 13 : 0323142214
Total Pages : 852 pages
Book Rating : 4.3/5 (231 download)

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Book Synopsis Fine Particles by : Benjamin Y.H. Liu

Download or read book Fine Particles written by Benjamin Y.H. Liu and published by Elsevier. This book was released on 2012-12-02 with total page 852 pages. Available in PDF, EPUB and Kindle. Book excerpt: Fine Particles: Aerosol Generation, Measurement, Sampling, and Analysis is a collection of technical papers presented at the Symposium on Fine Particles held in Minneapolis, Minnesota, on May 28-30, 1975. The symposium aims to explore the developments in instrumentation and experimental techniques for aerosol studies. This book is organized into four parts encompassing 34 chapters that focus on fine particles below about 3.5 μm in diameter. Part I presents the research and development in Europe and Japan on fine particles and aerosols, as well as the aerosol standards development work at the Particle Technology Laboratory, University of Minnesota. This part also includes calibration studies on condensation nuclei counters and the diffusion battery. Significant chapters in Part II are devoted to the common techniques for generation of aerosols of various sizes, from fine particles to monodisperse aerosols. This part further looks into the equipment limitations and problems in producing fine particle aerosols for life testing air cleaning systems and for weather modification experimentation. Part III describes the techniques and equipment used for size-selective aerosol sampling in terms of the design principles applied, the correspondence between design and performance of specific samplers, their applicability to field conditions, and their ability to satisfy sampler acceptance criteria. Part IV deals first with the methods for determination of aerosol properties, including their optical, electrical, and spectral properties. Other chapters examine the principles, mode of operation, and application of processes and instruments for aerosol studies.

Determination of the spatial and temporal variability of size-resolved PM2.5 composition and mixing state in multiple regions in California

Download Determination of the spatial and temporal variability of size-resolved PM2.5 composition and mixing state in multiple regions in California PDF Online Free

Author : Kimberly Prather
Publisher : California Air Resources Board
ISBN 13 :
Total Pages : 318 pages
Book Rating : 4./5 ( download)

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Book Synopsis Determination of the spatial and temporal variability of size-resolved PM2.5 composition and mixing state in multiple regions in California by : Kimberly Prather

Download or read book Determination of the spatial and temporal variability of size-resolved PM2.5 composition and mixing state in multiple regions in California written by Kimberly Prather and published by California Air Resources Board. This book was released on 2009-12-01 with total page 318 pages. Available in PDF, EPUB and Kindle. Book excerpt: Final report for California Air Resources Board contract 04-336. For an abstract and link to full text, please see: http://www.arb.ca.gov/research/single-project.php?row_id=64974

Aerosols and Atmospheric Chemistry

Author : Milton Kerker
Publisher :
ISBN 13 :
Total Pages : 376 pages
Book Rating : 4.:/5 (44 download)

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Book Synopsis Aerosols and Atmospheric Chemistry by : Milton Kerker

Download or read book Aerosols and Atmospheric Chemistry written by Milton Kerker and published by . This book was released on 1972 with total page 376 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Chemical Analysis of Aerosols for Characterization of Long-range Transport at Lassen Volcanic National Park

Author : Yutaka Harada
Publisher :
ISBN 13 :
Total Pages : 208 pages
Book Rating : 4.:/5 (76 download)

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Book Synopsis Chemical Analysis of Aerosols for Characterization of Long-range Transport at Lassen Volcanic National Park by : Yutaka Harada

Download or read book Chemical Analysis of Aerosols for Characterization of Long-range Transport at Lassen Volcanic National Park written by Yutaka Harada and published by . This book was released on 2007 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Single Particle Characterization, Source Apportionment, and Aging Effects of Ambient Aerosols in Southern California

Author : Laura Grace Shields
Publisher : ProQuest
ISBN 13 : 9780549598473
Total Pages : 230 pages
Book Rating : 4.5/5 (984 download)

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Book Synopsis Single Particle Characterization, Source Apportionment, and Aging Effects of Ambient Aerosols in Southern California by : Laura Grace Shields

Download or read book Single Particle Characterization, Source Apportionment, and Aging Effects of Ambient Aerosols in Southern California written by Laura Grace Shields and published by ProQuest. This book was released on 2008 with total page 230 pages. Available in PDF, EPUB and Kindle. Book excerpt: Composed of a mixture of chemical species and phases and existing in a variety of shapes and sizes, atmospheric aerosols are complex and can have serious influence on human health, the environment, and climate. In order to better understand the impact of aerosols on local to global scales, detailed measurements on the physical and chemical properties of ambient particles are essential. In addition, knowing the origin or the source of the aerosols is important for policymakers to implement targeted regulations and effective control strategies to reduce air pollution in their region. One of the most ground breaking techniques in aerosol instrumentation is single particle mass spectrometry (SPMS), which can provide online chemical composition and size information on the individual particle level. The primary focus of this work is to further improve the ability of one specific SPMS technique, aerosol time-of-flight mass spectrometry (ATOFMS), for the use of identifying the specific origin of ambient aerosols, which is known as source apportionment. The ATOFMS source apportionment method utilizes a library of distinct source mass spectral signatures to match the chemical information of the single ambient particles. The unique signatures are obtained in controlled source characterization studies, such as with the exhaust emissions of heavy duty diesel vehicles (HDDV) operating on a dynamometer. The apportionment of ambient aerosols is complicated by the chemical and physical processes an individual particle can undergo as it spends time in the atmosphere, which is referred to as "aging" of the aerosol. Therefore, the performance of the source signature library technique was investigated on the ambient dataset of the highly aged environment of Riverside, California. Additionally, two specific subsets of the Riverside dataset (ultrafine particles and particles containing trace metals), which are known to cause adverse health effects, were probed in greater detail. Finally, the impact of large wildfires on the ambient levels of particulate matter in Southern California is discussed. The results of this work provide insight into single particles impacting the Southern California region, the relative source contributions to this region, and finally an examination of how atmospheric aging influences the ability to perform source apportionment.

Physical and Chemical Characterization of Individual Airborne Particles

Author : Kvetoslav Rudolf Spurny
Publisher : Prentice Hall
ISBN 13 : 9780470203163
Total Pages : 440 pages
Book Rating : 4.2/5 (31 download)

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Book Synopsis Physical and Chemical Characterization of Individual Airborne Particles by : Kvetoslav Rudolf Spurny

Download or read book Physical and Chemical Characterization of Individual Airborne Particles written by Kvetoslav Rudolf Spurny and published by Prentice Hall. This book was released on 1986 with total page 440 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Advances and Applications of Mass Spectral Techniques for the Characterization of Atmospheric Aerosol Particles

Author : Lindsay Erighn Hatch
Publisher :
ISBN 13 : 9781267646781
Total Pages : 172 pages
Book Rating : 4.6/5 (467 download)

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Book Synopsis Advances and Applications of Mass Spectral Techniques for the Characterization of Atmospheric Aerosol Particles by : Lindsay Erighn Hatch

Download or read book Advances and Applications of Mass Spectral Techniques for the Characterization of Atmospheric Aerosol Particles written by Lindsay Erighn Hatch and published by . This book was released on 2012 with total page 172 pages. Available in PDF, EPUB and Kindle. Book excerpt: Aerosol particles are ubiquitous in the atmosphere and induce significant impacts on human health and climate that depend on their physical and chemical properties, such as size, composition, and mixing state (chemical associations). Measurements of aerosol composition at the single-particle level are necessary to better understand these effects. Aerosol time-of-flight mass spectrometry (ATOFMS) is able to monitor the size and chemical composition of individual particles in real time. In this doctoral research, ATOFMS analysis was extended to identify new mass spectral markers and improve the potential for quantitative measurements. Development of novel instrumentation was also undertaken. Ion markers indicative of organosulfate compounds were identified in ATOFMS mass spectra collected in Atlanta, GA. In this study, the mixing state and temporal behavior of particulate organosulfate compounds were observed for the first time. Organosulfates were overwhelmingly detected in carbonaceous submicron particles and the temporal trends indicated that they likely formed by the daytime oxidation of isoprene followed by aqueous reaction with sulfate overnight. These results highlight the roles of mixing state and multi-phase reactivity on the formation of secondary organic aerosols. ATOFMS measurements of thermally-conditioned aerosol residuals obtained during the 2005 Study of Organic Aerosols in Riverside, CA were analyzed to determine the impacts of atmospheric aging on the laser desorption/ionization process. Coatings of secondary species suppressed the ionization efficiency, thereby impacting the mass spectral peak areas; however, a novel analysis method was found to correct these artifacts and produced strong agreement with collocated quantitative instrumentation. This new analysis technique was then applied to investigate the mixing-state dependence of aerosol volatility observed in Riverside. It was observed that particulate nitrate evaporated at different temperatures from different particle types (e.g., organic vs. biomass burning), which may influence the regional transport of nitrate species. ATOFMS provides important insights into size-resolved particle sources; however it heavily fragments most organic species, resulting in loss of the molecular information. Therefore, a novel chemical ionization mass spectrometer was developed to better characterize the molecular organic aerosol constituents. In particular, an ion funnel was incorporated into a home-built proton-transfer-reaction mass spectrometer. Initial characterization studies and ion simulations indicated that the ion funnel can provide high-efficiency ion transfer from the ionization region to the mass spectrometer. These results demonstrate the potential for this instrument to ultimately achieve highly sensitive analyses of organic aerosols.

Characterization of Aerosols in California (ACHEX)

Author :
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (437 download)

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Book Synopsis Characterization of Aerosols in California (ACHEX) by :

Download or read book Characterization of Aerosols in California (ACHEX) written by and published by . This book was released on 1974 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Characterization of Aerosols in California (ACHEX) : Interim Report for Phase I Covering the Period October 25, 1971 to April 1, 1973

Author : California. Air Resources Board
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (437 download)

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Book Synopsis Characterization of Aerosols in California (ACHEX) : Interim Report for Phase I Covering the Period October 25, 1971 to April 1, 1973 by : California. Air Resources Board

Download or read book Characterization of Aerosols in California (ACHEX) : Interim Report for Phase I Covering the Period October 25, 1971 to April 1, 1973 written by California. Air Resources Board and published by . This book was released on 1973 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Laser-Induced Breakdown Spectroscopy

Author : Jagdish P. Singh
Publisher : Elsevier
ISBN 13 : 0128188308
Total Pages : 624 pages
Book Rating : 4.1/5 (281 download)

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Book Synopsis Laser-Induced Breakdown Spectroscopy by : Jagdish P. Singh

Download or read book Laser-Induced Breakdown Spectroscopy written by Jagdish P. Singh and published by Elsevier. This book was released on 2020-06-02 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt: Laser-Induced Breakdown Spectroscopy, Second Edition, covers the basic principles and latest developments in instrumentation and applications of Laser Induced Breakdown Spectroscopy (LIBS). Written by active experts in the field, it serves as a useful resource for analytical chemists and spectroscopists, as well as graduate students and researchers engaged in the fields of combustion, environmental science, and planetary and space exploration. This fully revised second edition includes several new chapters on new LIBS techniques as well as several new applications, including flame and off-gas measurement, pharmaceutical samples, defense applications, carbon sequestration and site monitoring, handheld instruments, and more. LIBS has rapidly developed into a major analytical technology with the capability of detecting all chemical elements in a sample, of real- time response, and of close-contact or stand-off analysis of targets. It does not require any sample preparation, unlike conventional spectroscopic analytical techniques. Samples in the form of solids, liquids, gels, gases, plasmas, and biological materials (like teeth, leaves, or blood) can be studied with almost equal ease. This comprehensive reference introduces the topic to readers in a simple, direct, and accessible manner for easy comprehension and maximum utility. - Covers even more applications of LIBS beyond the first edition, including combustion, soil physics, environment, and life sciences - Includes new chapters on LIBS techniques that have emerged in the last several years, including Femtosecond LIBS and Molecular LIBS - Provides inspiration for future developments in this rapidly growing field in the concluding chapter

The Character and Origins of Smog Aerosols

Author :
Publisher :
ISBN 13 :
Total Pages : 0 pages
Book Rating : 4.:/5 (14 download)

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Book Synopsis The Character and Origins of Smog Aerosols by :

Download or read book The Character and Origins of Smog Aerosols written by and published by . This book was released on 1980* with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Physical and chemical characterization of individual airborne particles

Author : Spurny KR.
Publisher :
ISBN 13 :
Total Pages : pages
Book Rating : 4.:/5 (985 download)

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Book Synopsis Physical and chemical characterization of individual airborne particles by : Spurny KR.

Download or read book Physical and chemical characterization of individual airborne particles written by Spurny KR. and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:

Atmospheric Aerosols

Author : Rekha Kale
Publisher : Scitus Academics LLC
ISBN 13 : 9781681171326
Total Pages : 0 pages
Book Rating : 4.1/5 (713 download)

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Book Synopsis Atmospheric Aerosols by : Rekha Kale

Download or read book Atmospheric Aerosols written by Rekha Kale and published by Scitus Academics LLC. This book was released on 2015-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric Aerosols is a vital problem in current environmental research due to its importance in atmospheric optics, energetics, radiative transfer studies, chemistry, climate, biology and public health. Aerosols can influence the energy balance of the terrestrial atmosphere, the hydrological cycle, atmospheric dynamics and monsoon circulations. Because of the heterogeneous aerosol field with large spatial and temporal variability and reduction in uncertainties in aerosol quantification is a challenging task in atmospheric sciences. Keeping this in view the present study aims to assess the impact of aerosols on coastal Indian station Visakhapatnam and the adjoining Bay of Bengal. An aerosol is a colloid of fine solid particles or liquid droplets, in air or another gas. Aerosols can be natural or not. Examples of natural aerosols are fog, forest exudates and geyser steam.

Nucleation and Atmospheric Aerosols

Author : Colin D. O'Dowd
Publisher : Springer Science & Business Media
ISBN 13 : 1402064748
Total Pages : 1275 pages
Book Rating : 4.4/5 (2 download)

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Book Synopsis Nucleation and Atmospheric Aerosols by : Colin D. O'Dowd

Download or read book Nucleation and Atmospheric Aerosols written by Colin D. O'Dowd and published by Springer Science & Business Media. This book was released on 2007-10 with total page 1275 pages. Available in PDF, EPUB and Kindle. Book excerpt: Atmospheric particles are ubiquitous in the atmosphere: they form the seeds for cloud droplets and they form haze layers, blocking out incoming radiation and contributing to a partial cooling of our climate. They also contribute to poor air quality and health impacts. A large fraction of aerosols are formed from nucleation processes – that is a phase transition from vapour to liquid or solid particles. Examples are the formation of stable clusters about 1 nm in size from molecular collisions and these in turn can grow into larger (100 nm or more) haze particles via condensation to the formation of ice crystals in mixed phase or cold clouds. This book brings together the leading experts from the nucleation and atmospheric aerosols research communities to present the current state-of-the-art knowledge in these related fields. Topics covered are: Nucleation Experiment & Theory, Binary, Homogeneous and Heterogeneous Nucleation, Ion & Cluster Properties During Nucleation, Aerosol Characterisation & Properties, Aerosol Formation, Dynamics and Growth, Marine Aerosol Production, Aerosol-Cloud Interactions, Chemical Composition & Cloud Drop Activation, Remote Sensing of aerosol & clouds and Air Quality-Climate Interactions