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Recent advances in air pollution monitoring and modeling capabilities have made it possible to show that air pollution can be transported long distances and that adverse impacts of emitted pollutants cannot be confined to one country or even one continent. Pollutants from traffic, cooking stoves, and factories emitted half a world away can make the air we inhale today more hazardous for our health. The relative importance of this "imported" pollution is likely to increase, as emissions in developing countries grow, and air quality standards in industrial countries are tightened. Global Sources of Local Pollution examines the impact of the long-range transport of four key air pollutants (ozone, particulate matter, mercury, and persistent organic pollutants) on air quality and pollutant deposition in the United States. It also explores the environmental impacts of U.S. emissions on other parts of the world. The book recommends that the United States work with the international community to develop an integrated system for determining pollution sources and impacts and to design effective response strategies. This book will be useful to international, federal, state, and local policy makers responsible for understanding and managing air pollution and its impacts on human health and well-being.
Anthropogenic particulate matter is an emerging form of environmental contaminate encompassing nanomaterials and microplastics. These human-made materials have renewed interest in colloid science and toxicology with the goal of answering two questions. (1) What processes affect the distribution of anthropogenic particulate matter in the environment? (2) Could anthropogenic particulate matter harm humans and/or the environment? It is difficult to answer these questions because the study of anthropogenic particulate matter exists between classical physics and chemistry, and concepts from both must be invoked to understand the processes that govern the fate and effects of these particles. As an example, I examined what unit is best used to express nanoparticle toxicity. Researchers typically express the dose of nanoparticles delivered to an organism as grams per liter, while the biochemically appropriate unit is moles. The use of the ‘gram per liter’ unit implies that 1 mole of a nanoparticles is equivalent to 1 mole of the dissolved particle material, rather than the number of particles or the active surface area of the particles, which may be appropriate measures of a mole of nanoparticles depending on mode of action. To determine which dosing unit is most appropriate, I performed the meta- analysis described in Chapter 2, which has been peer-reviewed and published in the journal NanoImpact. Through this work I discovered that units of surface area better reduced the heterogeneity of data for dissolvable particles, namely silver and zinc oxide tested on crustaceans, indicating that toxicity in these cases is dependent on surface reactions. However, no conclusion could be reached for non-dissolvable particles due to limited available data. The bigger takeaway from this work is that researchers have not been reporting sufficient meta-data to build a proper dataset, and more careful primary research is required. Research into the processes that govern the fate of anthropogenic particulate matter has shown that aggregation in aquatic systems and deposition in porous media are two of the driving factors of anthropogenic matter’s fate. Chapter 3 describes my effort to gain insight into aggregation. This chapter has been peer-reviewed and published in the journal ACS Earth and Space Chemistry. Briefly, I built a model to describe particle aggregation and disaggregation using statistical thermodynamics. This model describes the steady-state distribution of any two-particle system. I discovered that despite large concentration differences between anthropogenic particulate matter and natural particulate matter, anthropogenic particulate matter will not always be aggregated. In Chapter 4, I investigated deposition of particles using atomic force microscopy (AFM) and compared this to traditional column experiments. I used AFM to measure the probability a microplastic will deposit onto a surface if it contacts that surface. I found that the AFM method has a degree of variability due to choices made by the experimenter, but it can still be useful to probe deposition of microplastics on environmental surfaces as it allows qualitative comparisons which can inform hypotheses of the types of minerals that will matter to the transport of microplastics in the subsurface.
"This publication represents the views and expert opinions of an IARC Working Group on the Evaluation of Carcinogenic Risk to Humans, which met in Lyon, 8-15 October 2013."
This open access book not only describes the challenges of climate disruption, but also presents solutions. The challenges described include air pollution, climate change, extreme weather, and related health impacts that range from heat stress, vector-borne diseases, food and water insecurity and chronic diseases to malnutrition and mental well-being. The influence of humans on climate change has been established through extensive published evidence and reports. However, the connections between climate change, the health of the planet and the impact on human health have not received the same level of attention. Therefore, the global focus on the public health impacts of climate change is a relatively recent area of interest. This focus is timely since scientists have concluded that changes in climate have led to new weather extremes such as floods, storms, heat waves, droughts and fires, in turn leading to more than 600,000 deaths and the displacement of nearly 4 billion people in the last 20 years. Previous work on the health impacts of climate change was limited mostly to epidemiologic approaches and outcomes and focused less on multidisciplinary, multi-faceted collaborations between physical scientists, public health researchers and policy makers. Further, there was little attention paid to faith-based and ethical approaches to the problem. The solutions and actions we explore in this book engage diverse sectors of civil society, faith leadership, and political leadership, all oriented by ethics, advocacy, and policy with a special focus on poor and vulnerable populations. The book highlights areas we think will resonate broadly with the public, faith leaders, researchers and students across disciplines including the humanities, and policy makers.
This book is about airborne particulate matter, sources, chemistry and health and contained a complete information about their emission source, transport, atmospheric chemistry, distribution at local, regional and global levels, and their level in indoor and outdoor settings. Primary and secondary particulate matters in the ambient atmosphere also describe in detail. Analytical techniques, statistical tools and mathematical models used in airborne particulate research is also described. This book also covers the important aspects of the particulate matter chemistry in atmosphere, and their adverse impact on plant and human health. A detailed insight about the harmful impact of airborne particulate matter (biogenic and anthropogenic both) on different human system is described in detail. The toxicological significance of particulate matter on human body was also mentioned. The mitigation, management and regulatory policies to control ambient particulate matter is also provided. This book is also written in simple language with helpful photographs, diagrams, tables and flowcharts which will make the reader comfortable in understanding the concepts a more relatively easier way. Overall, the present book is a valuable tool for students working in the fields of Atmospheric Science, Environmental Science, Biological Sciences, Epidemiology and Agriculture Science. This book also a unique resource for environmental consultants, researchers, policymakers and other professionals involved in air quality, plant and human health.
Here is the most comprehensive and up-to-date treatment of one of the hottest areas of chemical research. The treatment of fundamental kinetics and photochemistry will be highly useful to chemistry students and their instructors at the graduate level, as well as postdoctoral fellows entering this new, exciting, and well-funded field with a Ph.D. in a related discipline (e.g., analytical, organic, or physical chemistry, chemical physics, etc.). Chemistry of the Upper and Lower Atmosphere provides postgraduate researchers and teachers with a uniquely detailed, comprehensive, and authoritative resource. The text bridges the "gap" between the fundamental chemistry of the earth's atmosphere and "real world" examples of its application to the development of sound scientific risk assessments and associated risk management control strategies for both tropospheric and stratospheric pollutants. - Serves as a graduate textbook and "must have" reference for all atmospheric scientists - Provides more than 5000 references to the literature through the end of 1998 - Presents tables of new actinic flux data for the troposphere and stratospher (0-40km) - Summarizes kinetic and photochemical date for the troposphere and stratosphere - Features problems at the end of most chapters to enhance the book's use in teaching - Includes applications of the OZIPR box model with comprehensive chemistry for student use
This concise book presents the relevant scientific data, historical developments, unsolved problems, and new research opportunities related to particulate air pollution and human health. Included are chapters on the nature of particulate air pollution, fates and toxicity of inhaled particles, evidence of harmful effects of air pollution, events that led to the current controversy, interpretation of modern epidemiology studies, needed research, challenges to commonly accepted ideas about pollutants and health, and recommendations for scientists, regulators, legislators, the public and industry.
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.
Air pollution is a global hazard. Majority of the world’s population is affected by air pollution. Contamination of air is no more an only an atmospheric problem but now has become a health concern too. Under the Clean Air Act of 1971, a set of air pollutants are designated as criteria pollutants. These are suspected to be strongly harming the public health and the environment as compared to other primary and secondary pollutants. Globally, this category of air pollutants has been given less attention, only few studies have been reported in this area. This book begins with a short background on criteria air pollutants and their sources, sinks and chemistry. The chapters explore the detailed nature of primary pollutants criteria pollutants such as nitrogen dioxide, sulphur dioxide, carbon monoxide, particulate matter and lead. Their reaction mechanisms, climate change potency, environmental health effects on plants and human life are discussed. The book also covers secondary pollutants such as ozone. The book discusses ozone chemistry and its environmental health effects. This book act as a valuable tool for students in Environmental Science, Biological Science and Agriculture, as well as environmental consultants and professionals involved in air quality research and the application of air quality guidelines and advice.