Download or read book Polybrominated Diphenyl Ether Flame Retardants in the Antarctic Environment written by Gilvan Takeshi Yogui and published by . This book was released on 2010 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Polybrominated diphenyl ethers (PBDEs) are anthropogenic chemicals whose environmental behavior is similar to the well-known polychlorinated biphenyls (PCBs). Few studies have quantified the amount and distribution of PBDEs in the southern hemisphere and Antarctica. The analyses reported in this dissertation document the levels of PBDEs in lichens, mosses and seabird eggs collected at King George Island, Antarctic Peninsula. The analyses were carried out using Gas Chromatography/Electron Impact-Mass Spectrometry (GC/EI-MS). Employing the ion stacking technique lowered detection limits and ensured instrument selectivity and sensitivity to the compounds of interest. Lichens and mosses absorb PBDEs directly from the atmosphere and their contamination indicates that long-range transport is the primary source of these chemicals to King George Island. The congener patterns of PBDEs in plants indicate that commercial mixtures of Penta-BDE and Octa-BDE have reached Antarctica. Differences in the levels of PBDEs observed in lichens and mosses are probably due to factors that govern the uptake of PBDEs from the atmosphere. Contamination in lichens showed a positive correlation with local precipitation. Conversely, absorption of PBDEs in mosses appears to be controlled by other plant-specific factors. Marine phytoplankton-derived aerosols are hypothesized to play an important role in the atmospheric transport of PBDEs to the Antarctic environment. PBDEs in south polar skua eggs revealed much higher concentration than in penguin eggs. This is likely associated with the northward migration of these seabirds during the non-breeding season. While penguins reside year-round in Antarctica, south polar skuas migrate northward and can be seen in boreal oceans during the austral winter. Distribution of PBDEs in penguin eggs matches the pattern found in local vegetation suggesting a common source for the chemicals. In contrast, the congener pattern of south polar skuas suggests that birds breeding at King George Island are wintering in the northwestern Pacific Ocean. A potential metabolism of PBDEs in penguin eggs during the incubation period seems to be limited. Most congeners were unaltered from source material in the eggs of chinstrap and gentoo penguins. Low levels of PBDEs, short incubation periods and energy constraints may explain these observations.

Download or read book Pentabromodiphenyl Ether as a Global POP written by Johanna Peltola and published by Nordic Council of Ministers. This book was released on 2001 with total page 84 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Transport and Fate of Polybrominated Diphenyl Ethers in the Baltic and Arctic Regions written by Anna Palm and published by Nordic Council of Ministers. This book was released on 2004 with total page 81 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Brominated Flame Retardants written by Ethel Eljarrat and published by Springer. This book was released on 2011-04-15 with total page 300 pages. Available in PDF, EPUB and Kindle. Book excerpt: Brominated flame retardants are one of the last classes of halogenated compounds that are still being produced worldwide and used in large quantities in many applications. They are used in plastics, textiles, electronic circuitry, and other materials to prevent fires. This volume covers the state-of-the-art of the analysis, fate and behaviour of brominated flame retardants. Experts in the field provide an overview of the compounds’ physico-chemical properties and uses, their occurrence in the environment and biota, advanced chemical analytical methods, degradation studies, toxicological effects and human exposure. This book is a valuable and comprehensive source of information for environmental scientists interested in brominated flame retardant issues, and for authorities and producers.

Download or read book Assessment of Concentrations of Polybrominated Diphenyl Ether Flame Retardants in the Australian Population written by Leisa Toms and published by . This book was released on 2006 with total page 71 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Concentrations of Polybrominated Diphenyl Ether Flame Retardants in Indoor Environments in Australia written by Leisa Toms and published by . This book was released on 2006 with total page 57 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Assessment of Concentrations of Polybrominated Diphenyl Ether Flame Retardants in Aquatic Environments in Australia written by Leisa Toms and published by . This book was released on 2006 with total page 64 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Polymer Green Flame Retardants written by Constantine D. Papaspyrides and published by Newnes. This book was released on 2014-08-14 with total page 943 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymer Green Flame Retardants covers key issues regarding the response of polymers during fire, the mechanisms of their flame retardation, the regulations imposed on their use, and the health hazards arising from their combustion. Presenting the latest research developments, the book focuses in particular on nanocomposites, believed to be the most promising approach for producing physically superior materials with low flammability and ecological impact. The fire properties of nanocomposites of various matrixes and fillers are discussed, the toxicological characteristics of these materials are analyzed, addressing also their environmental sustainability. Edited by distinguished scientists, including an array of international industry and academia experts, this book will appeal to chemical, mechanical, environmental, material and process engineers, upper-level undergraduate and graduate students in these disciplines, and generally to researchers developing commercially attractive and environmentally friendly fire-proof products. - Provides recent findings on the manufacture of environmentally sustainable flame retardant polymeric materials - Covers legislation and regulations concerning flame retarded polymeric material use - Includes tables containing the fire properties of the most common polymeric materials

Download or read book Antarctic Futures written by Tina Tin and published by Springer Science & Business Media. This book was released on 2013-10-04 with total page 363 pages. Available in PDF, EPUB and Kindle. Book excerpt: At the beginning of the 21st century, Antarctica is poised at the edge of a warmer and busier world. Leading Antarctic researchers examine the needs and challenges of Antarctic environmental management today and tomorrow. Through: (i) investigating the impacts of human activities on specific ecosystems and species, (ii) examining existing environmental management and monitoring practices in place in various regions and (iii) interrogating stakeholders, they address the following questions: What future will Business-As-Usual bring to the Antarctic environment? Will a Business-As-Usual future be compatible with the objectives set out under the Antarctic Treaty, especially its Protocol on Environmental Protection? What actions are necessary to bring about alternative futures for the next 50 years? This volume is an outcome of the International Polar Year (2007-2009) Oslo Science Conference (8-12, June, 2010).

Download or read book Polybrominated Diphenyl Ether PBDE Flame Retardants Report to the Oregon Legislature February 2008 written by and published by . This book was released on 2008 with total page 13 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Flame Retardant and Thermally Insulating Polymers written by Yanfei Xu and published by BoD – Books on Demand. This book was released on 2021-09-08 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polymers have infiltrated almost every aspect of modern technology, as they have wide applications ranging from building insulation and firefighter uniforms to the Boeing 787 Dreamliner aircraft and electronics packaging. However, common polymers are flammable. Inflammability and thermal insulation properties in polymers are important for specific applications. This book discusses recent advances in developing eco-friendly, flame-retardant, and thermally insulative polymer-based materials. It not only focuses on developments of high-performance flame retardants, but also examines flame retardant behaviors in polymers. Eco-friendly polymers with superior flame retardancy, extraordinary thermal insulation, and excellent mechanical strength will provide new opportunities for existing and future applications.

Download or read book Assessment of Polybrominated Diphenyl Ethers and Other Emerging Halogenated Flame Retardants in the Aquatic Environment of China written by and published by . This book was released on 2014 with total page 208 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Understanding the Long range Transport of Polybrominated Diphenyl Ethers written by Fiona Kin-Yao Lau and published by . This book was released on 2006 with total page 310 pages. Available in PDF, EPUB and Kindle. Book excerpt:

Download or read book Antarctic Terrestrial Microbiology written by Don A. Cowan and published by Springer. This book was released on 2014-07-08 with total page 324 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book brings together many of the world’s leading experts in the fields of Antarctic terrestrial soil ecology, providing a comprehensive and completely up-to-date analysis of the status of Antarctic soil microbiology. Antarctic terrestrial soils represent one of the most extreme environments on Earth. Once thought to be largely sterile, it is now known that these diverse and often specialized extreme habitats harbor a very wide range of different microorganisms. Antarctic soil communities are relatively simple, but not unsophisticated. Recent phylogenetic and microscopic studies have demonstrated that these communities have well established trophic structuring and play a significant role in nutrient cycling in these cold and often dry desert ecosystems. They are surprisingly responsive to change and potentially sensitive to climatic perturbation. Antarctic terrestrial soils also harbor specialized ‘refuge’habitats, where microbial communities develop under (and within) translucent rocks. These cryptic habitats offer unique models for understanding the physical and biological ‘drivers’ of community development, function and evolution.

Download or read book Global Contamination Trends of Persistent Organic Chemicals written by Bommanna G. Loganathan and published by CRC Press. This book was released on 2011-08-09 with total page 658 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental pollution by man-made persistent organic chemicals (POCs) has been a serious global issue for over half a century. POCs are prevalent in air, water, soil, and organisms including wildlife and humans throughout the world. They do not degrade and cause long-term effect in organisms. Exposure to certain POCs may result in serious environmental and health effects including birth defects, diminished intelligence and certain types of cancers. Therefore, POCs have been the subject of an intensive regional, national and international effort to limit their production, use, and disposal of these chemical stocks. Trend monitoring studies are essential to make clear the behavior and fate of these compounds and to protect our environment and living resources. Global Contamination Trends of Persistent Organic Chemicals provides comprehensive coverage of spatial and temporal trends of classical and emerging contaminants in aquatic, terrestrial, and marine ecosystems, including the Arctic and Antarctic ecosystems. Compiled by an international group of experts, this volume covers: Spatial and temporal trends of polychlorinated biphenyls (PCBs), chlorinated pesticides, polychlorinated naphthalenes (PCNs), polychlorinated dibenzo-p-dioxins/furans (PCDD/DFs), polybrominated diphenyl ethers (PBDEs), hexabromocyclododecanes (HBCDs), perfluorinated compounds (PFCs), synthetic musks, polynuclear aromatic hydrocarbons (PAHs), and octyl- and nonylphenols Environmental and biological matrices used for the trend studies were atmosphere, water, soil, sediment, bivalve mollusks, fish, marine mammals, terrestrial mammals, and human breast milk Spatial and temporal trend studies presented from Australia, Brazil, China, Estonia, Ghana, Hong Kong, India, Italy, Japan, Korea, Norway, Poland, Sweden, the United States, coastal and open ocean environments, and the Arctic and Antarctic regions POCs have been the subject of an intensive regional, national, and international effort to limit their production and use, and to mitigate the disposal of these chemicals. Since POCs are prevalent in air, water, soil, and tissues of organisms (including wildlife and humans) throughout the world and do not degrade, they cause long-term effects in organisms. Trend monitoring studies are essential to make clear the behavior and fate of these compounds and to protect our environment and living resources. Relevant to professionals and students alike, Global Contamination Trends of Persistent Organic Chemicals facilitates the understanding of environmental and biological behavior of these chemicals and the development of strategies for protecting the global environment for future generations.

Download or read book Flame Retardants written by Paulo B. Merlani and published by . This book was released on 2010 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Flame retardants comprise a diverse group of chemicals which are widely used at relatively high concentrations in many applications, including the manufacture of electronic equipment, textiles, plastic polymers and in the car industry, primarily to protect materials against ignition and to prevent fire-related damage. More than 175 different types of flame retardants exist, which are commonly divided into four major groups: halogenated organic (usually brominated or chlorinated), inorganic, organophosphorus and nitrogen-containing flame retardants. Depending on the mode of action, flame retardants can act at any of the steps involved in the combustion process. Flame retardants are designed to prevent the spread of fire and have thereby helped to save many lives while also dramatically reducing the economic impact of fires. However, flame retardants, particularly the class known as polybrominated diphenyl ethers (PBDE's), may be contributing to the rising prevalence of developmental disabilities due to their widespread use and physiologically active properties including direct neurotoxicity and endocrine disruption. This new and important book gathers the latest research from around the globe in the study of flame retardants and their functions, properties and safety.

Download or read book New Frontiers in Environmental Toxicology written by Tanu Jindal and published by Springer Nature. This book was released on 2021-09-21 with total page 142 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume provides up-to-date information on toxic pollutants in the environment and their harmful effects on human health and nature. The book covers many important aspects of environmental toxicology, such as features, characterization, applications, environmental routes for dispersion, nanotoxicity, ecotoxicity and genotoxicity of nanomaterials, with emphasis on radiation toxicology, polar ecotoxicology, plastic toxicology, microbrial toxicology, nanotoxicology and pesticide toxicology. Also discussed is the use of microbes and nanotechnology for medicinal purposes, which has revealed important chemical prototypes in the discovery of new agents, stimulating the use of refined physical techniques and new syntheses of molecules with pharmaceutical applications for human welfare. The chapters also address the fate of nanoparticles in the environment, as well as nanotoxicology mechanisms impacting human health. The book will be of interest to toxicologists, environmental scientists, chemists, and students of microbiology, nanotechnology and pharmacology.