Download or read book Spatial and Temporal Variations of Bioavailable Polycyclic Aromatic Hydrocarbons in the Lower Willamette River written by Gregory J. Sower and published by . This book was released on 2009 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt: Urban rivers with a history of industrial use can exhibit spatial and temporal variations in contaminant concentrations that may significantly affect risk evaluations and assessment of remediation efforts. To more effectively estimate human and ecological health risks, we evaluated the spatial and temporal distribution of polycyclic aromatic hydrocarbons (PAHs) in an urban river using low-density polyethylene passive sampling devices (PSDs). PSDs simulate cell membranes and lipid tissue and accumulate only freely dissolved, and thus, bioavailable contamination. Using PSDs and high-pressure liquid chromatography we measured bioavailable concentrations of 15 priority pollutant PAHs over five years along 18.5 miles of the lower Willamette River including the Portland Harbor Superfund megasite. This area contains several PAH sources including coal tar and creosote sites, which underwent remediation during this study. Additional potential sources of PAHs include combined sewer overflows, urban runoff, atmospheric deposition and petroleum product leaks and spills. Results reveal increased urban bioaccessible PAH loading during wet seasons and high rain events, successful capping of the McCormick and Baxter Superfund site, increased bioavailable PAHs during dredging operations, and the potential for using PSDs for source apportionment. PAH concentrations, loads, and congener ratios changed significantly depending on location, river flow, precipitation, and contaminant removal activities. Our research demonstrates that human and ecological risk varies significantly by season and remediation technique. Additionally, our refined analytical method eliminated 80% of organic solvents and 100% of chlorinated solvents from the sampling method and also reduced labor and cost. Health professionals can apply the findings and refined technology to more effectively assess exposure to pollution.
Download or read book Polycyclic Aromatic Hydrocarbons in Bottom Sediment and Bioavailability in Streams in the New River Gorge National River and Gauley River National Recreation Area West Virginia 2002 written by Terence Messinger and published by . This book was released on 2004 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polycyclic aromatic hydrocarbons in bottom sediment and bioavailability in streams in the New River Gorge National River and Gauley River National Recreation Area West Virginia 2002 written by and published by DIANE Publishing. This book was released on with total page 33 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Investigation of the Distribution of Organochlorine and Polycyclic Aromatic Hydrocarbon Compounds in the Lower Columbia River Using Semipermeable Membrane Devices written by Kathleen A. McCarthy and published by . This book was released on 1999 with total page 152 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial and Temporal Distributions of Organic Matter and Polycyclic Aromatic Hydrocarbons PAHs in Surface Waters of the York River VA Estuary written by Rebecca E. Countway and published by . This book was released on 1999 with total page 170 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2009 with total page 810 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polycyclic Aromatic Hydrocarbons in Bottom Sediment and Bioavailability in Streams in the New River Gorge National River and Gauley River National Recreation Area West Virginia 2002 written by Terence Messinger and published by . This book was released on 2004 with total page 24 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Spatial and Temporal Trends of Polycyclic Aromatic Hydrocarbon Loadings to Inland Lakes in Michigan written by Amanda Marie Robinson and published by . This book was released on 2014 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Polycyclic Aromatic Hydrocarbon PAH Variability in the Lower Tar River N C from a Legacy Hazardous Waste Site as a Function of Hydrological Conditions written by Daniel Reed and published by . This book was released on 2023 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Polycyclic aromatic hydrocarbons (PAHs) are a class of trace organic contaminants that can enter the environment from both natural and anthropogenic sources. Of these compounds, 16 are listed as high-priority contaminants by the EPA. PAHs are either petrogenic or pyrogenic. One potential anthropogenic source of PAHs is fuel seeps. The Tar River has been and is currently being affected by a legacy fuel seep from underground storage tanks in the area that have undergone remediation. Although research has been done on PAHs in fuel seeps and on PAH remediation, that research addressed sites soon after remediation. Research has generally not addressed how PAH contamination from a legacy seep historically remediated. This research aims to determine how a legacy seep affects PAH contamination in the Tar River as a function of river flow. To determine how the legacy seep is affecting the Tar River at different flow conditions, sites at and around the potential contamination site, Town Creek, were sampled over several months in 2022 and 2023. These samples were then filtered to separate particulates and dissolved PAHs. The identity and concentration of PAHs were determined using a gas chromatograph- mass spectrometer. The total PAHs and ratio of parent PAHs to the total PAHs were found to have no correlation with the gauge height of the river or the dissolved organic carbon (DOC) of the sites sampled. This suggests that the PAH contamination in the Tar River was not driven by river flow. Parent-to-total PAH ratio of less than 0.5 in the dissolved phase at the upstream (TC1) sampling site during 10-2-22 and 11-20-22 sampling events, and at a downstream site (D1) during a 11-20-22 sampling event, suggest that a petrogenic source affected these sites during these events. Individual PAH distributions at D1 had a petrogenic signature during a low flow period in the Tar River suggesting that it may have been affected by Town Creek during low flow events. This research adds to the knowledge base of contamination sites that have undergone remediation in the past and how they may still affect their environments.
Download or read book Effects of urban development on stream ecosystems in nine metropolitan study areas across the United States written by James F. Coles and published by . This book was released on 2012 with total page 138 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Coal Tar Creosote written by C. Melber and published by WHO. This book was released on 2004 with total page 154 pages. Available in PDF, EPUB and Kindle. Book excerpt: On cover: IPCS International Programme on Chemical Safety. Published under the joint sponsorship of the United Nations Environment Programme, the International Labour Organization and the World Health Organization, and produced within the framework of the Inter-organization Programme for the Sound Management of Chemicals (IOMC)
Download or read book Urban Stormwater Management in the United States written by National Research Council and published by National Academies Press. This book was released on 2009-03-17 with total page 611 pages. Available in PDF, EPUB and Kindle. Book excerpt: The rapid conversion of land to urban and suburban areas has profoundly altered how water flows during and following storm events, putting higher volumes of water and more pollutants into the nation's rivers, lakes, and estuaries. These changes have degraded water quality and habitat in virtually every urban stream system. The Clean Water Act regulatory framework for addressing sewage and industrial wastes is not well suited to the more difficult problem of stormwater discharges. This book calls for an entirely new permitting structure that would put authority and accountability for stormwater discharges at the municipal level. A number of additional actions, such as conserving natural areas, reducing hard surface cover (e.g., roads and parking lots), and retrofitting urban areas with features that hold and treat stormwater, are recommended.
Download or read book Passive Sampling Techniques in Environmental Monitoring written by Richard Greenwood and published by Elsevier. This book was released on 2007-07-03 with total page 487 pages. Available in PDF, EPUB and Kindle. Book excerpt: Monitoring pollutants in air, soil and water is a routine requirement in the workplace, and in the wider environment. Passive samplers can provide a representative picture of levels of pollutants over a period of time from days to months by measuring the average concentrations to which they have been exposed. Air monitors are widely used, for instance to measure the exposure of workers to volatile compounds, but also for monitoring the fate of pollutants in the atmosphere. Passive sampling devices are now becomining increasingly used to monitor pollutants in rivers, coastal waters and ground water where contamination results from sources such as domestic and industrial discharges, and the use of agrochemicals. Passive Sampling Techniques in Environmental Monitoring provides a timely collection of information on a set of techniques that help monitor the quality of air, surface and ground waters. Passive sampling can provide an inexpensive means of obtaining a representative picture of quality over a period of time, even where levels of pollutants fluctuate due to discontinuous discharges or seasonal application of chemicals such as pesticides. Recent changes in legislation have increased the pressure to obtain better information than that provided by classical infrequent spot sampling.Brought together in one source, this book looks at the performance of a range of devices for the passive sampling of metals, and of non-polar and polar organic chemicals in air and in water. The strengths and weaknesses and the range of applicability of the technology are considered. * Comprehensive review of passive sampling - covering air, water and majority of available technologies in one volume* Chapters written by international specialist experts * Covers theory and applications, providing background information and guidelines for use in the field
Download or read book Perspectives on Integrated Coastal Zone Management written by Wim Salomons and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: All coastal areas are facing a growing range of stresses and shocks, the scale of which now poses threats to the resilience of both human and environmental coastal systems. Responsible agencies are seeking better ways of managing the causes and consequences of the environmental change process in coastal zones. This volume discusses the basic principles underpinning a more integrated approach to coastal management and highlights the obstacles that may be met in practice in both developed and developing countries. Successful strategies will have to encompass all the elements of management, from planning and design through financing and implementation, as highlighted in this book.
Download or read book Ambient Water Quality Criteria for Cadmium written by United States Environmental Protection Agency (EPA) and published by Createspace Independent Publishing Platform. This book was released on 2018-08-24 with total page 190 pages. Available in PDF, EPUB and Kindle. Book excerpt: Ambient Water Quality Criteria for Cadmium
Download or read book Arsenic Contamination in the World written by Susan Murcott and published by IWA Publishing. This book was released on 2012-09-30 with total page 341 pages. Available in PDF, EPUB and Kindle. Book excerpt: Arsenic Contamination in the World: an International Sourcebook provides a global compendium of cited arsenic occurrences in the world as they affect public health. This book details arsenic contamination by source, region and arsenic-affected country. Arsenic is identified in 105 countries and territories, representing a larger database than any previous published work. Sources of arsenic contamination are categorized as Anthropogenic, Geogenic, Volcanogenic, Coal, Mining and Petroleum-related. National, regional and international maps locate the affected areas and populations. A synthesis of critical country information includes an estimate of the exposed population of 226 million people worldwide. This reference work is an indispensable tool for medical doctors, public health workers, scientists, water experts, governments, industries, non-profit organizations and communities in identifying site-specific arsenic contamination. An extensive bibliography of peer-reviewed literature gives the reader important arsenic contamination locations as the first step towards remediation. This Sourcebook is updatable via an on-line annex which provides up-to-date information on new arsenic occurrences and developments. We invite readers to participate in updating this database at: http://www.iwawaterwiki.org/xwiki/bin/view/Articles/ExecutiveSummaryofArsenicContaminationintheWorld By synthesizing the known occurrences of arsenic world-wide, this reference book offers an essential tool for understanding and addressing the global arsenic geological-public health interface. Discounted ebook price available for customers from Developing Countries. Please contact [email protected] if you wish to purchase an ebook from a developing country @ £50.00 (PDF format). Author: Susan Murcott, Senior Lecturer, Civil and Environmental Engineering Department, Massachusetts Institute of Technology, USA Table of Contents: Executive Summary, African Region, Region of the Americas, Asia Region, European Region, Region of Australia and Oceania.
Download or read book The Toxicology of Fishes written by Richard T. Di Giulio and published by CRC Press. This book was released on 2008-02-25 with total page 1102 pages. Available in PDF, EPUB and Kindle. Book excerpt: When looking for a book on fish toxicology, you might find one that discusses the biochemical and molecular aspects, or one that focuses aquatic toxicology in general. You can find resources that cover human and animal toxicology or ecotoxicology in general, but no up-to-date, comprehensive monograph devoted to the effects of chemical pollution on
