Download or read book Mercury Transport Through Northern Forested Watersheds written by Jacob Arnold Fleck and published by . This book was released on 1999 with total page 200 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Hydrologic Transport of Mercury Through Forested Watersheds written by Randall Karl Kolka and published by . This book was released on 1996 with total page 504 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Transport and Fate Through a Watershed written by and published by . This book was released on 2006 with total page 36 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Star Report written by National Center for Environmental Research and Quality Assurance and published by . This book was released on 2000 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury in the Environment written by Michael S. Bank and published by Univ of California Press. This book was released on 2012-05-31 with total page 361 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury pollution and contamination are widespread, well documented, and continue to pose a public health concern in both developed and developing countries. In response to a growing need for understanding the cycling of this ubiquitous pollutant, the science of mercury has grown rapidly to include the fields of biogeochemistry, economics, sociology, public health, decision sciences, physics, global change, and mathematics. Only recently have scientists begun to establish a holistic approach to studying mercury pollution that integrates chemistry, biology, and human health sciences. Mercury in the Environment follows the process of mercury cycling through the atmosphere, through terrestrial and aquatic food webs, and through human populations to develop a comprehensive perspective on this important environmental problem. This timely reference also provides recommendations on mercury remediation, risk communication, education, and monitoring.
Download or read book Handbook of Environmental Materials Management written by Chaudhery Mustansar Hussain and published by Springer. This book was released on 2019-06-03 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: This reference work analyzes and assesses global environmental management techniques for environmental materials with a focus on their performance and economic benefits, proposing eco-friendly solutions and designating policies that will sustain the environment for future generations. It addresses management of environmental materials as not only a complex anthropogenic problem, but also as an expensive problem that needs to be managed sustainably. Simultaneously, it considers the environmental and economic benefits involved in the high levels of investment and operation costs required to develop effective materials collection and management systems in modern society.
Download or read book Global and Regional Mercury Cycles Sources Fluxes and Mass Balances written by W. Baeyens and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 572 pages. Available in PDF, EPUB and Kindle. Book excerpt: Essential themes in the biochemical cycling of mercury are the relative importance of anthropogenic versus natural sources, transformation and migration processes at the local, regional and global scale, global emission inventories of different mercury sources (both point and diffuse) of both natural and anthropogenic origin. In this regard, Siberia, with its vast territory and variety of natural zones, is of special interest in the global mercury cycle and in terms of the influence of geographical zones on source and sink terms in regional budgets. Siberia contains large areas of mercuriferous belts; natural deposits that emit mercury into the atmosphere and water. Siberian gold has been mined with the use of mercury since the early 1800s. But there, too, huge forest zones and vast areas of tundra and wetland (bogs) can act as efficient sinks for atmospheric mercury. Audience: Environmental scientists, legislators, politicians and the interested citizen wishing to gain a clear picture of the biogeochemical cycling of mercury.
Download or read book Factors Affecting the Mobilization Transport and Bioavailability of Mercury in Reservoirs in the Upper Missouri River Basin written by Glenn R. Phillips and published by . This book was released on 1987 with total page 70 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Transport of Mercury from Soils to Streams in Two Forested Catchments on Mt Mansfield Vermont written by Andrea F. Donlon and published by . This book was released on 1999 with total page 332 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book The Role of Small Wetlands and Lakes in Transformation and Transport of Total and Methyl Mercury in the Adirondacks written by Pranesh Selvendiran and published by . This book was released on 2009 with total page 129 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury (Hg) is an environmental pollutant that leads to the contamination of forest, soils, lakes and streams. Hg is also a well known neurotoxin and, human and wildlife health concerns are primarily related to exposure to methyl mercury (MeHg) that bioaccumulates in aquatic and terrestrial organisms. Wetlands are important landscapes where ionic Hg (Hg 2+ ) is transformed to MeHg, and transported to downstream aquatic ecosystems. This research was conducted in small forest watershed-lake ecosystems in the Adirondacks to better understand Hg cycling in wetlands and lakes. The study was conducted in three phases. Phase I and II, were designed to investigate Hg transport and fate in two forest wetlands through detailed evaluations of seasonal Hg concentrations and mass budgets. The two wetlands, a riparian peatland and an abandoned beaver meadow, intercept majority of the upland runoff from Archer Creek draining Arbutus Lake Watershed. In Phase III, Hg budgets of two contrasting lakes were evaluated. Arbutus and Sunday lakes differ in landscape, physical and chemical attributes. The proportion of total mercury (THg) that was methyl mercury (% MeHg) in the upland stream of Archer Creek increased from 2% in the upland system to 6% at the outlet of the wetlands. During the growing season concentrations of THg, MeHg and dissolved organic carbon (DOC) were markedly higher and sulfate (SO 4 2- ) was markedly lower compared to the non-growing season. Transport of Hg species was facilitated by DOC production as indicated by significant positive relations with THg and MeHg. Mass balance calculations revealed that the wetlands were net sources of THg and MeHg to stream water, although the magnitude of the source was a function of wetland connectivity to stream water. The storage of THg and MeHg in wetland soil was a large pool which seems coupled with total carbon and sulfur accumulation. In the current scenario of decreasing Hg emission and atmospheric deposition, the large 'active' Hg soil pool in wetlands is a potential short-term and long-term source of Hg and MeHg to downstream aquatic ecosystems. Concentrations of Hg species increased with increases in DOC concentrations and percent wetland coverage at Arbutus (4%) and Sunday Lake (20%). Negligible removal of THg inputs was observed at Sunday Lake that has a short hydraulic residence time (HRT; 0.02 yrs) compared to approximately 60% removal at Arbutus Lake that has longer HRT (0.6 yrs).
Download or read book Mercury as a Global Pollutant written by Donald B. Porcella and published by Springer. This book was released on 2014-08-23 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: ACKNOWLEDGEMENTS xiv PART I MERCURY AND HUMAN HEALTH B. WHEATLEY and S. PARADIS I Exposure of Canadian Aboriginal Peoples to Methylmercury 3-11 M. GIRARD and C. DUMONT I Exposure of James Bay Cree to Methylmercury during Pregnancy for the Years 1983-91 13-19 M. RICHARDSON, M. MITCHELL, S. COAD and R. RAPHAEL I Exposure to Mercury in Canada: A Multimedia Analysis 21-30 M. RICHARDSON, M. EGYED and D. J. CURRIE I Human Exposure to Mercury may Decrease as Acidic Deposition Increases 31-39 L. E. FLEMING, S. WATKINS, R. KADERMAN, B. LEVIN, D. R. AVYAR, M. BIZZIO, D. STEPHENS and J. A. BEAN I Mercury Exposure in Humans through Food Consumption from the Everglades of Florida 41-48 J. M. GEARHART, H. J. CLEWELL III, K. S. CRUMP, A. M. SHIPP and A. SILVERS I Pharmacokinetic Dose Estimates of Mercury in Children and Dose-Response Curves of Performance Tests in a Large Epidemiological Study 49-58 I. SKARE I Mass Balance and Systemic Uptake of Mercury Released from Dental Amalgam Fillings 59-67 J. DELLINGER, N. KMIECIK, S. GERSTENBERGER and H. NGU I Mercury Contamina tion of Fish in the Ojibwa Diet: I. Walleye Fillets and Skin-On versus Skin-Off Sampling 69-76 J. DELLINGER, L. MALEK and M. BEATTIE I Mercury Contamination of Fish in the Ojibwa Diet: II. Sensory Evoked Responses in Rats Fed Walleye 77-83 H. AKAGI, O. MALM, F. J. P. BRANCHES, Y. KINJO, Y. KASHIMA, J. R. D. GUIMARAES, R. B. OLIVEIRA, K. HARAGUCHI, W. C. PFEIFFER, Y.
Download or read book Hydrological Controls on Mercury Mobility and Transport from a Forested Hillslope During Spring Snowmelt written by Kristine Marie Haynes and published by . This book was released on 2012 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Proceedings and Summary Report written by and published by . This book was released on 2002 with total page 180 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Canadian Water Quality Guidelines for the Protection of Aquatic Life written by Canada. Environment Canada and published by . This book was released on 2003 with total page 124 pages. Available in PDF, EPUB and Kindle. Book excerpt: Distributed by the Government of Canada Depository Services Program.
Download or read book Mercury in Streamwater from Watersheds with Contrasting Land Use in Northern Vermont written by Krista Reinhart and published by . This book was released on 2003 with total page 132 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Fate and Transport in Urban Watersheds written by Chris Eckley and published by . This book was released on 2008 with total page 304 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury (Hg) is a pollutant of global concern due to its high toxicity at low concentrations. Most emissions of Hg are to the air, however, the majority of human exposure to Hg is through the consumption of contaminated fish. Therefore, to link human exposure of Hg to emissions requires understanding its environmental cycle. The focus of this research is on fluxes of Hg in the urban environment with a particular focus on Hg air-to-surface deposition, surface-to-air emission, and surface-to-water washoff. The main study location was Toronto, Ontario, however samples were also collected from Austin, Texas. Mercury was found to deposit and accumulate on urban surfaces at a linear rate over time when not exposed to influence of washoff. The accumulation of Hg on urban surfaces was spatially variable throughout the urban environment (0.82 ng/m2/d to 2.8 ng/m2/d) and significantly higher compared a rural location (0.58 ng/m2/d). The surface-to-air emission of Hg from pavement was spatially variable throughout the city (median range from below the detection limit to 5.2 ng/m2/h), and was related to the concentration of Hg associated with street dust. The amount of solar radiation was also shown to have a significant influence on the emission of Hg from the surface. During rain events, high Hg concentrations were measured at the beginning of runoff (up to 76.0 ng/L), which quickly decreased during the remainder of the event. The flux of Hg was driving by the discharge and the largest Hg loads were always associated with the period of peak discharge. Depending on the rain event characteristics, the urban surface was a net sink or a net source of Hg. Simulated rain experiments on an urban roadway showed that the number of antecedent dry days was associated with the amount of Hg mobilized in runoff. The simulated rain events also determined that the Hg in rain became quickly bound to surface particles and that the majority of Hg in runoff was derived from the surface.
Download or read book Mercury Pollution Integration and Synthesis written by Carl J. Watras and published by CRC Press. This book was released on 1994-11-11 with total page 760 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book contains 57 chapters describing the results of original research and reviewing the state-of-the-science with respect to environmental mercury. Topics include analytical methodology, atmospheric cycling, freshwater and marine ecosystems, terrestrial processes, bioaccumulation, modeling, pollution and remediation, and human health and public policy.
