Download or read book Chlorinated Dioxin Trends Between 1987 and 1993 for Samples of Crab Hepatopancreas from Pulp and Paper Mill and Harbour Sites in British Columbia written by and published by . This book was released on 1995 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chlorinated Dioxin Trends Between 1987 and 1993 for Samples of Crab Hepatopancreas from Pulp and Paper Mill and Harbour Sites in British Columbia written by M. B. Yunker and published by . This book was released on 1995 with total page 134 pages. Available in PDF, EPUB and Kindle. Book excerpt: This study employs principal components analysis (PCA) to explore the interrelationships and trends in both the chlorinated dibenzo-p-dioxin and dibenzofuran patterns and the toxic congener composition among British Columbia pulp and paper mill sites, and between harbours and mill sites. The researchers applied PCA to a large data set of the concentrations of dioxins and furans in samples of crab hepatopancreas from locations in the vicinity of British Columbia coastal mills and the principal harbours in the province. PCA distinguishes harbour samples from mill samples, reveals differences between individual mill sites, and reliably classifies the dioxin and furan congener patterns according to chlorine bleaching, digested polychlorinated phenol, and pentachlorophenol wood preservative sources. PCA is also used to assign sources to individual crab samples. The study results indicate the changes in dioxin and furan congener composition over time.
Download or read book Chlorinated Dioxin Trrends Between 1987 and 1993 for Samples of Crab Hepatopancreas from Pulp and Paper Mill and Harbour Sites in British Columbia written by M. B. Yunker and published by . This book was released on 1995 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chlorinated Dioxin Trends Between 1987 and 1993 for Samples of Crab Hematopancreas from Pulp and Paper Mill and Harbour Sites in British Columbia written by Mark Bernard Yunker and published by . This book was released on 1995 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Fate and Effects of Pulp and Paper written by Mark R. Servos and published by CRC Press. This book was released on 2020-02-03 with total page 720 pages. Available in PDF, EPUB and Kindle. Book excerpt: In recent years, there have been emerging concerns regarding the fate and effects of pulp and paper mill effluents on the environment. Countries throughout the world are focusing attention on the implementation of regulatory and monitoring programs. In response, industry has begun to implement a variety of process and treatment technologies designed to minimize or eliminate the potential impacts. Environmental Fate and Effects of Pulp and Paper Mill Effluents explores the most active and critical current research and experimentation from around the world. This comprehensive overview examines the identity and origin of chemicals in pulp mill effluents, environmental fate of chemicals from pulp and paper mills, bioaccumulation of substances from pulp mills to fish and wildlife, field and laboratory studies of biochemical and whole organism responses associated with pulp and paper effluents, integrated monitoring and future research, and policy directions of this rapidly evolving field. Written by prominent scientists from around the world with contributions from industry, government, and academia, this important new book provides a balanced global perspective of the recent scientific findings and the challenges being faced in the immediate future.
Download or read book Environmental Health Perspectives written by and published by . This book was released on 2000 with total page 1724 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Molecular and Applied Aspects of Oxidative Drug Metabolizing Enzymes written by Emel Arinç and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 297 pages. Available in PDF, EPUB and Kindle. Book excerpt: Proceedings of a NATO ASI held in Antalya, Turkey, August 31 - September 11, 1997
Download or read book The Organic Carbon Cycle in the Arctic Ocean written by Rüdiger Stein and published by Springer Science & Business Media. This book was released on 2011-06-27 with total page 394 pages. Available in PDF, EPUB and Kindle. Book excerpt: The flux, preservation, and accumulation of organic carbon in marine systems are controlled by various mechanisms including primary p- duction of the surface water, supply of terrigenous organic matter from the surrounding continents, biogeochemical processes in the water column and at the seafloor, and sedimentation rate. For the world's oceans, phytoplankton productivity is by far the largest organic carbon 9 source, estimated to be about 30 to 50 Gt (10 tonnes) per year (Berger et al. 1989; Hedges and Keil 1995). By comparison, rivers contribute -1 about 0. 15 to 0. 23 Gt y of particulate organi.
Download or read book Oceanic Abstracts written by and published by . This book was released on 1996-10 with total page 1002 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Environmental Toxicology and Chemistry written by and published by . This book was released on 2000 with total page 736 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Chemical Contaminants in Canadian Aquatic Ecosystems written by D. M. Whittle and published by Canadian Government Publishing. This book was released on 1998 with total page 340 pages. Available in PDF, EPUB and Kindle. Book excerpt: This report focuses on those chemicals that persist in the Canadian environment and that are accumulated by aquatic organisms. It summarizes scientific information collected previously, with emphasis on Canadian research findings published in the last decade. The first part of the report introduces the general features of aquatic ecosystems and provides basic information on the fate and effects of chemical contaminants. The second part reviews contaminant related issues for the following geographic areas: Atlantic marine ecosystems including the St. Lawrence, Bay of Fundy, and general north-west Atlantic; freshwater ecosystems including the Great Lakes and inland waters; the Arctic marine ecosystem; and Pacific aquatic ecosystems including the British Columbia coastal ecosystem, the open coast, and some of the major rivers. All chapters discuss the major contaminant issues, important oceanographic or limnological features, biological resources, and sources of contaminants as well as contaminant trends, distribution, and effects. Current and emerging chemical contaminant issues and associated research topics are summarized at the end of each chapter. The third part is an overall assessment of current knowledge of chemical contaminants and their effects on fish and fish habitat, and identifies major current and emerging contaminant issues confronting Canada's fish and fish habitat.
Download or read book Government Reports Announcements Index written by and published by . This book was released on 1996 with total page 710 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Zoological Record written by and published by . This book was released on with total page 1744 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dioxin furan and Polychlorinated Biphenyl in Dungeness Crab Cancer Magister from Victoria and Esquimalt Harbours 1987 to 2003 written by W. D. Knapp and published by . This book was released on 2008 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt: Dioxin/furan and polychlorinated biphenyl (PCB) analyses were conducted on samples of Dungeness crab (Cancer magister) captured from Victoria and Esquimalt harbours between 1987 and 2003. Brief descriptions of the contaminant trends and characteristics are provided, based on toxic equivalents (TEQs) and congener profiles. Dioxin/furan TEQs in crab harvested from Victoria Harbour were variable within and between sites for all years, although an overall decline was observed and statistical analyses confirmed a significant decline in mean dioxin/furan TEQs. Dioxin/furan TEQs in crab from Esquimalt Harbour were approximately 90 % lower than those from Victoria Harbour and relatively consistent within and between sites. Statistical analyses indicated a significant increase in mean dioxin/furan TEQ in crab hepatopancreas; however, they were well below levels of concern for human consumption. The dioxin/furan congener profiles were similar for both Victoria and Esquimalt harbours with little change over time. PCB TEQs for Victoria Harbour were much higher (overall average of 54.7 pg/g) than those for Esquimalt Harbour (average of 14.75 pg/g). No PCB temporal trends were observed for either Victoria or Esquimalt Harbour. PCB congener profiles were found to be similar for Victoria and Esquimalt Harbours with little change over time. A comparison of 2003 dioxin/furan and PCB data from four B.C. pulp mill sites with 2003 Victoria Harbour data illustrated characteristic differences in contaminant profiles between harbour and mill areas. Victoria Harbour total (dioxin/furan and dioxin-like PCB) TEQs were clearly driven by the PCB component compared to pulp mill sites where the dioxin/furan TEQs were the main contributor. Dioxin/furan congener profiles illustrated the difference between harbour and mill sites, with unique congener 'fingerprints' for each suggesting different contaminant sources. The PCB congener profiles were found to be very similar between Victoria Harbour and the four pulp mill sites. Victoria Harbour was closed to commercial crab harvesting, with an advisory on consumption of crab hepatopancreas, in May 1992 due to elevated dioxin/furan levels. These closures continue as a result of unacceptably high concentrations of dioxin/furan and PCBs in crab hepatopancreas tissue. Esquimalt Harbour is not currently subject to dioxin/furan or PCB mediated crab harvest restrictions.
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:
Download or read book Seafood Safety written by Institute of Medicine and published by National Academies Press. This book was released on 1991-01-01 with total page 449 pages. Available in PDF, EPUB and Kindle. Book excerpt: Can Americans continue to add more seafood to their diets without fear of illness or even death? Seafood-caused health problems are not widespread, but consumers are at risk from seafood-borne microbes and toxinsâ€"with consequences that can range from mild enteritis to fatal illness. At a time when legislators and consumer groups are seeking a sound regulatory approach, Seafood Safety presents a comprehensive set of practical recommendations for ensuring the safety of the seafood supply. This volume presents the first-ever overview of the field, covering seafood consumption patterns, where and how seafood contamination occurs, and the effectiveness of regulation. A wealth of technical information is presented on the sources of contaminationâ€"microbes, natural toxins, and chemical pollutantsâ€"and their effects on human health. The volume evaluates methods used for risk assessment and inspection sampling.
