Download or read book Temporal Trends in Polychlorinated Dibenzo p dioxins and Dibenzo furans Dioxin like PCBS and Polybrominated Diphenyl Ethers in Niagra River Suspended Sediments written by and published by . This book was released on 2005 with total page 26 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Temporal Trends in Polychlorinated Dibenzo p dioxins and Dibenzofurans Dioxin like PCBS and Polybrominated Diphenyl Ethers in Niagara River Suspended Sediments written by and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: "Archived suspended sediment samples collected over the period 1980-2002 at Niagara-on-the-Lake in the Niagara River were analyzed to assess temporal trends in contaminants associated with historical industrial activities in the watershed (PCDDs/PCDFS, DLPCBs), compared to more modern industrial chemicals (PBDEs)"--Abstract.
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 Polychlorinated Dibenzo p dioxins PCDDs and Polychlorinated Dibenzofurans PCDFs written by A. Sheffield and published by Environment Canada, Environmental Protection Service. This book was released on 1985 with total page 68 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Determination of Polychlorinated Dibenzo p dioxins Polychlorinated Dibenzofurans and Dioxin like Polychlorinated Biphenyls in Biota and Sediment written by Katrin Vorkamp and published by . This book was released on 2012 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chlorinated Dioxins and Dibenzofurans in Perspective written by Christoffer Rappe and published by CRC Press. This book was released on 2018-01-31 with total page 537 pages. Available in PDF, EPUB and Kindle. Book excerpt: This volume was developed from the proceedings of a symposium held in Miami Beach, at the 189th National Meeting of the American Chemical Society.It is the result of the combined efforts of many experts whose efforts have advanced our knowledge of the production, analysis, distribution, effects and control of chlorinated dioxins, dibenzofurans and related compounds.This is the third in a series of publications originating from current technology presented at national meetings of the American Chemical Society. Using this forum as a catalyst, researchers from all over the world came together to present and discuss their data and plan future work in this rapidly developing and sometimes highly emotional technical area.
Download or read book Dioxins in the Environment written by Great Britain. Interdepartmental Working Group on Polychlorinated Dibenzo-para-dioxins and Polychlorinated Dibenzofurans and published by . This book was released on 1986 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dioxins in the environment written by Great Britain. Central Directorate of Environmental Protection and published by . This book was released on 1989 with total page 102 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Historical Trends of Polychlorinated Dibenzo p dioxins and Dibenzofurans in Fish and Sediment Associated with Two Bleached Kraft Pulp Mills in Northern Ontario written by Shari Cater and published by . This book was released on 2013 with total page 110 pages. Available in PDF, EPUB and Kindle. Book excerpt: In the early 1990s polychlorinated dibenzo-p-dioxin (PCDD) and dibenzofuran (PCDF) contamination of fish was widely associated with bleached kraft pulp mills. Regulations were put into place in Canada and elsewhere to reduce or eliminate the presence of these chemicals in pulp mill effluents. The industry quickly introduced treatment and process changes such as elemental (ECF) and total chlorine free (TCF) bleaching, which resulted in dramatically reduced PCDD/F concentrations in pulp mill effluents. However, PCDD/Fs may remain a concern for the receiving environment near bleached kraft pulp mills due to their tendency to persist in sediments and bioaccumulate in aquatic biota. Several studies conducted in the early 1990s reported significantly elevated levels of PCDD/Fs in white sucker (Catostomus commersoni) exposed to bleached kraft mill effluent (BKME). Particularly high concentrations were observed in the receiving environment of two mills in northern Ontario. The first mill, located in the town of Terrace Bay, discharges effluent into Jackfish Bay, Lake Superior. The second mill is located in Smooth Rock Falls, Ontario and discharges effluent into the Mattagami River where effects have been observed in fish collected downstream of the pulp mill. Over time, both mills have undergone a number of process upgrades, including a transition to 100% chlorine dioxide (ClO2) substitution. In 2006 the Tembec Smooth Rock Falls Pulp and Paper Mill closed permanently, while the mill in Terrace Bay has gone through a number of temporary shutdowns and is currently in the process of transitioning to a dissolving pulp process. Temporal changes in PCDD/F contamination was examined in white sucker historically exposed to BKME in Jackfish Bay and the Mattagami River, following mill process changes and closures. Historical data was summarized from studies conducted in the 1990s and analyzed along with liver tissue of male white sucker collected from each location in 2011 and 2012. The body burden of each fish was analysed using Toxic Equivalency (TEQ) calculations to account for concentration and relative toxicity of 2,3,7,8??? substituted PCDD/F congeners. At Jackfish Bay, concentrations of PCDD/Fs in surface sediment and dated sediment cores were used to document the spatial and temporal pattern of PCDD/F contamination in relation to historical process upgrades and operational changes at the mill. PCDD/Fs measured in white sucker liver samples collected from Jackfish Bay during gonadal recrudescence in the fall illustrate a decrease in mean TEQ from 74.2 ?? 20.9 pg???g-1 in 1991 to 3.34 ?? 2.05 pg???g-1 in 2012. These values were slightly elevated compared to the remote reference location at Mountain Bay, Lake Superior, which exhibited a mean TEQ of 1.88 ?? 0.45 pg???g-1 and 1.06 ?? 0.69 pg???g-1 in white sucker collected in fall 2011 and 2012, respectively. Although below consumption guidelines, trace levels of PCDD/Fs persist in fish collected from Jackfish Bay and these concentrations are suspected to reflect sediment contamination in Moberly Bay (part of Jackfish Bay). A unique PCDD/F contaminant profile, dominated by 2,3,7,8??? tetrachlorodibenzo???p???dioxin (TCDD) and dibenzofuran (TCDF), was observed in white sucker and sediment collected from Jackfish Bay. Analysis of surface sediment collected throughout Jackfish Bay revealed elevated PCDD/F concentrations, compared to reference areas in Lake Superior. TEQ values measured in surface sediment from the depositional areas of Moberly Bay exceeded the Canadian Council of Ministers of the Environment (CCME) guidelines. In 1991 PCDD/F contamination, reported as mean TEQ, of white sucker collected downstream of the pulp mill outfall in Smooth Rock Falls reached levels of 111 ?? 86.2 pg???g-1. At the time, the mill utilized molecular chlorine (Cl2) in the bleaching sequence and employed primary effluent treatment. A dramatic decline was observed in PCDD/F concentrations of fish collected in 1993 and 1995, corresponding to implementation of 100% ClO2 substitution in the bleaching process. PCDD/F contamination in white sucker collected from the Mattagami River in 2011 and 2012 were similar upstream (0.53???1.49 pg TEQ???g-1) and downstream (0.75???2.87 pg TEQ???g-1) of the historical pulp mill outfall at Smooth Rock Falls, suggesting a return to background condition following the 2006 mill closure. Levels of 2,3,7,8???TCDD and 2,3,7,8???TCDF in liver tissue of fish collected downstream declined drastically compared to concentrations measured in 1991. The PCDD/F congener profile observed in white sucker downstream in 2011 and 2012 was more similar to fish collected from the reference site upstream than exposed fish collected in 1991. No sediment depositional areas suitable for taking a core sample were found on the river downstream of Smooth Rock Falls due to the nature of the system. This study supports the conclusion that particulate (POM) and dissolved organic matter (DOM) from continuous inputs of effluent were likely the primary source of PCDD/Fs to fish in these receiving environments, with only a small contribution from surface sediment. Results indicate a decreasing trend in PCDD/F contamination of white sucker historically exposed to bleached kraft pulp mill effluent in the receiving environments of Jackfish Bay and the Mattagami River, consistent with mill process upgrades to eliminate the use of elemental chlorine from the bleaching sequence. Current levels of PCDD/Fs measured in white sucker collected from these locations suggest a return to background condition.
Download or read book Dioxins and Health written by Arnold Schecter and published by John Wiley & Sons. This book was released on 2012-04-10 with total page 676 pages. Available in PDF, EPUB and Kindle. Book excerpt: Explores the latest science on dioxins and other POPs, and their impact on human health Now in its third edition, Dioxins and Health is the most respected reference of its kind, presenting the latest scientific findings on dioxins, dibenzofurans, polychlorinated biphenyls and related compounds, and their impact on human health. The book fully examines the many toxicological effects—including immunological, neurological, developmental, dermatological, and cardiological—these chemicals have on health. This Third Edition has been greatly expanded with the latest research findings on dioxins and related compounds. Moreover, it now includes coverage of other persistent organic pollutants (POPs) and endocrine disruptors, including: Brominated flame retardants, such as polybrominated diphenyl ethers and hexabromocyclododecane Perfluorinated chemicals such as perfluorooctanoic acid and perfluorooctanesulfonic acid Other endocrine disrupting chemicals similar to POPs such as bisphenol A Readers will also learn about the latest findings on the long-term impacts caused by the use of Agent Orange in Vietnam. Other chapters review the Seveso disaster in Italy and the Yusho and Yucheng rice oil poisoning incidents in Japan and Taiwan. In addition, there is a full chapter dedicated to the dioxin poisoning of former Ukraine President Victor Yushchenko. All the chapters in the book have been written by leading international experts. References at the end of each chapter guide readers to the primary literature in the field. Expertly organized in one volume, Dioxins and Health offers readers quick access to essential information about dioxins and related compounds written in clear, simple language that is accessible to not only scientists, clinicians and public health professionals, but also general readers.
Download or read book Polychlorinated Dibenzodioxins and Polychlorinated Dibenzofurans written by and published by . This book was released on 1993 with total page 55 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Polychlorinated dibenzodioxins (dioxins)-and polychlorinated dibenzofurans (furans) are highly persistent compounds with a strong affinity [for sediments and a high potential for accumulating in biological. tissues. They have been found in all compartments of the ecosystem, including: air, water, soil, sediments, animals and foods. All animals and humans in Canada are exposed to these substances"--Summary, p. v.
Download or read book Dioxins written by Health Council of the Netherlands, Committee on Risk Evaluation of Substances/Dioxins and published by . This book was released on 1996 with total page 116 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polybrominated Diphenyl Ethers PBDEs and Polychlorinated Dibenzo p dioxins and Dibenzofurans PCDD Fs in Fish from New York s Great Lakes and Connecting Channels written by Lawrence C. Skinner and published by . This book was released on 2020 with total page 166 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Method for the Analysis of Polychlorinated Dibenzo para dioxins PCDDs Polychlorinated Dibenzofurans PCDFs and Polychlorinated Biphenyls PCBs in Samples from the Incineration of PCB Waste written by River Road Environmental Technology Centre. Chemistry Division and published by Environnement Canada. This book was released on 1990 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Enkele toxicokinetische aspecten vaan mengselinteracties tussen polychloordibenzo p dioxinen PCDDs dibenzofuranen PCDFs en bifenylen PCBs in knaagdieren written by Johannes de Jongh and published by . This book was released on 1994 with total page 114 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for Chlorodibenzofurans written by and published by . This book was released on 1994 with total page 260 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Toxicological Profile for Chlorinated Dibenzo p dioxins written by and published by . This book was released on 1998 with total page 624 pages. Available in PDF, EPUB and Kindle. Book excerpt:
