Mercury in Fish, Bed Sediment, and Water from Streams Across the United States, 1998-2005 PDF Download
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Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 88
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Book Description
Author:
Publisher:
ISBN:
Category : Fishes
Languages : en
Pages : 88
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Book Description
Author: Barbara C. Scudder
Publisher: DIANE Publishing
ISBN: 1437921132
Category : Science
Languages : en
Pages : 86
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Book Description
Report on how mercury (Hg) was examined in top-predator fish, bed sediment, and water from streams that spanned regional and national gradients of Hg source strength and other factors thought to influence methylmercury bioaccum. Sampled settings include stream basins that were agr¿l, urbanized, undeveloped, and mined. Predator fish were targeted for collection, and composited samples of fish were analyzed for total Hg (THg), as most of the Hg found in fish tissue is MeHg. Samples of bed sediment and stream water were analyzed for THg, MeHg, and characteristics thought to affect Hg methylation, such as loss-on-ignition and acid-volatile sulfide in bed sediment, and pH, dissolved organic carbon, and dissolved sulfate in water. Illus.
Author:
Publisher: DIANE Publishing
ISBN: 1428984917
Category :
Languages : en
Pages : 48
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Book Description
Author: Jeffrey M. Fischer
Publisher: Geological Survey (USGS)
ISBN:
Category : Science
Languages : en
Pages : 48
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Book Description
Author:
Publisher: Geological Survey (USGS)
ISBN:
Category : Medical
Languages : en
Pages : 444
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Book Description
Author: Khan M.G. Mostofa
Publisher: Springer Science & Business Media
ISBN: 3642322239
Category : Science
Languages : en
Pages : 919
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Book Description
Photoinduced processes, caused by natural sunlight, are key functions for sustaining all living organisms through production and transformation of organic matter (OM) in the biosphere. Production of hydrogen peroxide (H2O2) from OM is a primary step of photoinduced processes, because H2O2 acts as strong reductant and oxidant. It is potentially important in many aquatic reactions, also in association with photosynthesis. Allochthonous and autochthonous dissolved organic matter (DOM) can be involved into several photoinduced or biological processes. DOM subsequently undergoes several physical, chemical, photoinduced and biological processes, which can be affected by global warming. This book is uniquely structured to overview some vital issues, such as: DOM; H2O2 and ROOH; HO•; Degradation of DOM; CDOM, FDOM; Photosynthesis; Chlorophyll; Metal complexation, and Global warming, as well as their mutual interrelationships, based on updated scientific results.
Author: National Research Council
Publisher: National Academies Press
ISBN: 0309134102
Category : Science
Languages : en
Pages : 316
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Book Description
Some of the nation's estuaries, lakes and other water bodies contain contaminated sediments that can adversely affect fish and wildlife and may then find their way into people's diets. Dredging is one of the few options available for attempting to clean up contaminated sediments, but it can uncover and re-suspend buried contaminants, creating additional exposures for wildlife and people. At the request of Congress, EPA asked the National Research Council (NRC) to evaluate dredging as a cleanup technique. The book finds that, based on a review of available evidence, dredging's ability to decrease environmental and health risks is still an open question. Analysis of pre-dredging and post-dredging at about 20 sites found a wide range of outcomes in terms of surface sediment concentrations of contaminants: some sites showed increases, some no change, and some decreases in concentrations. Evaluating the potential long-term benefits of dredging will require that the U.S. Environmental Protection Agency step up monitoring activities before, during and after individual cleanups to determine whether it is working there and what combinations of techniques are most effective.
Author: Kevin Summers
Publisher:
ISBN:
Category : Nature
Languages : en
Pages : 232
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Book Description
Author: Nina A. Fisher
Publisher:
ISBN:
Category : Environmental monitoring
Languages : en
Pages : 192
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Book Description
Author: Council on Environmental Quality (U.S.)
Publisher:
ISBN:
Category : Delaware River Valley (N.Y.-Del. and N.J.)
Languages : en
Pages : 100
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Book Description
