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 Polychlorinated Dibenzo p dioxins and furans PCDDs PCDFs Sources and Environmental Impact Epidemiology Mechanisms of Action Health Risks written by Stephen Safe and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polychlorinated Dibenzodioxins and -furans (PCDDs and PCDFs) are potent environmental toxins. Environmental exposures to these compounds in part-per-billion (ppb) and part-per-trillion (ppt) concentrations are of particular interest. These exposures may arise from bleached paper products, paper production process sludge, effluent waste water from paper plants, consumption of food and water from contaminated sources and contact to paper products.
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 66 pages. Available in PDF, EPUB and Kindle. Book excerpt:
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 A Report on Polychlorinated Dibenzo p dioxins PCDDs and Polychlorinated Dibenzofurans PCDFs written by United States. Environmental Protection Agency. Region V. and published by . This book was released on 1981 with total page 54 pages. Available in PDF, EPUB and Kindle. Book excerpt: "Evidence exists that PCDDs and PCDFs may be released to the environment by combustion processes. This report summarized those studies involving PCDDs and PCDFs in the Great Lakes Area. This report does not address the physical, chemical, and toxicological properties of these compounds."--Introd.
Download or read book Determination of Body Burdens for Polychlorinated Dibenzo p dioxin PCDDs and Polychlorinated Dibenzofurans PCDFs in California Residents written by John S. Stanley and published by . This book was released on 1989 with total page 258 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Reference Method for the Determination of Polychlorinated Dibenzo para dioxins PCDDs and Polychlorinated Dibenzofurans PCDFs in Pulp and Paper Mill Effluents written by Canada. Environment Canada and published by . This book was released on 1992 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report describes an analytical methodology developed in support of the Canadian Environmental Protection Act. The methodology is used to identify and quantify trace amounts of polychlorinated dibenzo-para-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) in pulp and paper mill effluents. The method detection limit depends on sample matrix characteristics and can be as low as 2-20 pg/L (parts per quadrillion) for PCDD and PCDF cogeners. The report describes sample collection, extraction, cleanup, chromatographic separation, and identification and quantification of tetra- through octa-CDD/CDF cogeners, including 2,3,7,8-tetrachlorodibenzo-para-dioxin (2,3,7,8-TCDD) and 2,3,7,8-tetrachlorodibenzofuran (2,3,7,8-TCDF).
Download or read book Polychlorinated Dibenzo p dioxins and furans PCDDs PCDFs Sources and Environmental Impact Epidemiology Mechanisms of Action Health Risks written by Stephen Safe and published by Springer. This book was released on 1990-12-18 with total page 145 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polychlorinated Dibenzodioxins and -furans (PCDDs and PCDFs) are potent environmental toxins. Environmental exposures to these compounds in part-per-billion (ppb) and part-per-trillion (ppt) concentrations are of particular interest. These exposures may arise from bleached paper products, paper production process sludge, effluent waste water from paper plants, consumption of food and water from contaminated sources and contact to paper products.
Download or read book Polychlorinated Dibenzo para dioxins and Polychlorinated Dibenzofurans written by IARC Working Group on the Evaluation of Carcinogenic Risks to Humans and published by World Health Organization. This book was released on 1997 with total page 694 pages. Available in PDF, EPUB and Kindle. Book excerpt: Evaluates the carcinogenic risks to humans posed by exposure to polychlorinated dibenzo-para-dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs). PCDDs are formed as inadvertent by-products, sometimes in combination with PCDFs, during the production of chlorophenols and chlorophenoxy herbicides, and have been detected as contaminants in these products. PCDDs and PCDFs may also be produced in thermal processes such as incineration and metal processing and in the bleaching of paper pulp with free chlorine. Of the PCDDs: 2 3 7 8-tetrachlorodibenzo-para-dioxin (2 3 7 8-TCDD), or, dioxin, has attracted the greatest concern. PCDDs and PCDFs are ubiquitous in soil, sediment, and air, persist in the environment, and accumulate in animal fat. Excluding occupational and accidental exposures, most human exposure to these compounds occurs from the consumption of meat, milk, eggs, fish, and related products. Occupational exposures at higher levels have occurred since the 1940s as a result of the production and use of chlorophenols and chlorophenoxy herbicides and, for PCDFs, in metal production and recycling. Even higher exposures have occurred in sporadic industrial accidents and following incidents of rice oil contamination. The evaluation, which considered abundant human and animal carcinogenicity data found strong evidence from epidemiological studies in humans that exposure to 2 3 7 8-TCDD produces increased risks for all cancer combined, rather than for any specific site, suggesting that 2 3 7 8-TCDD is an unprecedented multi-site carcinogen with no single site predominating. Citing data from animal studies and other lines of evidence, the monograph concludes that 2 3 7 8-TCDD is carcinogenic to humans. Other polychlorinated dibenzo-para-dioxins and dibenzo-para-dioxin could not be classified as to their carcinogenicity to humans. For PCDFs, the evaluation considered evidence from two large poisoning incidents involving rice oil contamination in Japan and Taiwan. Although excessive mortality from liver cancer was observed in long-term follow-up of the Japanese cases, the report cited other factors, including a high prevalence of chronic hepatitis B infection in the geographical area concerned, as possible explanations. Evidence of carcinogenicity to human was judged inadequate. In the absence of convincing data from experimental animals, PCDFs could not be classified as to their carcinogenicity to humans.
Download or read book PCDDs polychlorinated Dibenzo p dioxins and PCDFs polychlorinated Dibenzofurans in Humans written by and published by . This book was released on 1990 with total page 10 pages. Available in PDF, EPUB and Kindle. Book excerpt: Numerous instances of human exposure to polychlorinated dibenzo-p- dioxins (PCDDs) and polychlorinated dibenzofurans (PCDFs) have been documented. Following the development of sufficiently specific and sensitive analytical methods during the past few years, many reports have appeared on PCDD and PCDF levels in human blood and adipose tissues. Studies have examined the PCDD and PCDF levels resulting from accidental and occupational exposures of various groups, including chemical plant workers, forestry and tannery workers, and Niet Nam veterans who had handled Agent Orange. The general background levels in the US, Federal Republic of Germany, Japan, and Sweden were also determined. The results of these studies indicate that a background level of PCDDs and PCDFs is present in the overall population. In some cases, individuals exposed to specific PCDDs or PCDFs exhibit higher levels than the general population. Isomer distribution patterns are relatively consistent and indicative of sources and metabolism. This paper reviews the available data on human PCDD and PCDF levels in exposed and general populations. 15 refs., 4 figs.
Download or read book Results of Analysis of Water Samples for Polychlorinated Dibenzo p dioxins PCDDs and Polychlorinated Dibenzofurans PCDFs written by and published by . This book was released on 1996 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Introduction to Environmental Forensics written by Brian L. Murphy and published by Academic Press. This book was released on 2014-07-30 with total page 747 pages. Available in PDF, EPUB and Kindle. Book excerpt: The third edition of Introduction to Environmental Forensics is a state-of-the-art reference for the practicing environmental forensics consultant, regulator, student, academic, and scientist, with topics including compound-specific isotope analysis (CSIA), advanced multivariate statistical techniques, surrogate approaches for contaminant source identification and age dating, dendroecology, hydrofracking, releases from underground storage tanks and piping, and contaminant-transport modeling for forensic applications. Recognized international forensic scientists were selected to author chapters in their specific areas of expertise and case studies are included to illustrate the application of these methods in actual environmental forensic investigations. This edition provides updates on advances in various techniques and introduces several new topics. - Provides a comprehensive review of all aspects of environmental forensics - Coverage ranges from emerging statistical methods to state-of-the-art analytical techniques, such as gas chromatography-combustion-isotope ratio mass spectrometry and polytopic vector analysis - Numerous examples and case studies are provided to illustrate the application of these forensic techniques in environmental investigations
Download or read book A Method for the Analysis of Polychlorinated Dibenzo para dioxins PCDD Polychlorinated Dibenzofurans PCDF and Polychlorinated Biphenyls PCB in Samples from the Incineration of PCB Waste written by Canada. Environnement Canada and published by . This book was released on 1989 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Forensics for Persistent Organic Pollutants written by Gwen O'Sullivan and published by Newnes. This book was released on 2013-11-20 with total page 424 pages. Available in PDF, EPUB and Kindle. Book excerpt: Environmental Forensics for Persistent Organic Pollutants represents the state-of-the-art in environmental forensics in relation to persistent organic pollutants (POPs). The book is a complete reference for practitioners and students, covering a range of topics from new analytical techniques to regulatory and legal status in the global community. Through case studies from leading international experts, real-world issues — including the allocation of responsibility for release into the environment — are resolved through the application of advanced analytical and scientific techniques. This book introduces and assesses the development of new techniques and technologies to trace the source and fate of newly emerging and classic POPs (perfluoroalkyl substances, brominated flame retardants, organochlorine pesticides, perfluorinated chemicals, polycyclic aromatic hydrocarbons, and polychlorinated biphenyls) in environmental media, including atmospheric, marine, freshwater, and urban environments. - Real-world case studies show the application of advanced analytical and scientific techniques - Discussion of GC*GC provides an introduction and assessment of a novel technique from leaders in the field - Introduces the development of new analytical techniques (such as 2-D GC*HC and LC*LC) to trace the source and fate - Raises awareness about the health and environmental impact of persistent organic pollutants (POPs) - Outlines the development of international measures to control POPs so that chemists can understand the legal issues
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 Levels of Polychlorinated Dibenzo p dioxins PCDDs and Polychlorinated Dibenzofurans PCDFs in Biota and Sediments Near Potential Sources of Contamination in British Columbia 1987 written by and published by . This book was released on 1988 with total page 17 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Health Effects of Polychlorinated Biphenyls PCBs Polychlorinated Dibenzo p dioxins PCDDs and Polychlorinated Dibenzofurans PCDFs written by and published by . This book was released on 1980 with total page 62 pages. Available in PDF, EPUB and Kindle. Book excerpt:
