Download or read book Preliminary Assessment of Total Mercury Concentrations in Fishes from Connecticut Water Bodies written by Robert M. Neumann and published by . This book was released on 1996 with total page 117 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Total Mercury Concentrations in Fishes from Rivers Lakes and Reservoirs in New Jersey written by and published by . This book was released on 1994 with total page 106 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Human Health Risk Assessment written by Alberta. Department of Health and Wellness. Surveillance and Assessment and published by . This book was released on 2009 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Assessment of Total Mercury Concentrations in Fishes from Rivers Lakes and Reservoirs of New Jersey written by Richard J. Horwitz and published by . This book was released on 2002 with total page 14 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury in Fish Bed Sediment and Water from Streams Across the United States 1998 2005 written by Barbara C. Scudder and published by DIANE Publishing. This book was released on 2010-08 with total page 86 pages. Available in PDF, EPUB and Kindle. Book excerpt: 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.
Download or read book Phase II Assessment of Total Mercury Concentrations in Fishes from Rivers Lakes and Reservoirs of New Jersey written by Richard J. Horwitz and published by . This book was released on 1999 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Concentrations in Water and Mercury and Selenium Concentrations in Fish from Brownlee Reservoir and Selected Sites in the Boise and Snake Rivers Idaho and Oregon 2013 15 written by Marshall L. Williams and published by . This book was released on 2016 with total page 29 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury (Hg) analyses were conducted on samples of sport fish and water collected from selected sampling sites in Brownlee Reservoir and the Boise and Snake Rivers to meet National Pollution Discharge and Elimination System (NPDES) permit requirements for the City of Boise, Idaho, between 2013 and 2015. City of Boise personnel collected water samples from six sites between October and November 2013 and 2015, with one site sampled in 2014. Total Hg concentrations in unfiltered water samples ranged from 0.48 to 8.8 nanograms per liter (ng/L), with the highest value in Brownlee Reservoir in 2013. All Hg concentrations in water samples were less than the U.S. Environmental Protection Agency (USEPA) Hg chronic aquatic life criterion of 12 ng/L. The USEPA recommended a water-quality criterion of 0.30 milligrams per kilogram (mg/kg) methylmercury (MeHg) expressed as a fish-tissue residue value (wet-weight MeHg in fish tissue). The Idaho Department of Environmental Quality adopted the USEPA's fish-tissue criterion and established a reasonable potential to exceed (RPTE) threshold 20 percent lower than the criterion or greater than 0.24 mg/kg Hg based on an average concentration of 10 fish from a receiving waterbody. NPDES permitted discharge to waters with fish having Hg concentrations exceeding 0.24 mg/kg are said to have a reasonable potential to exceed the water-quality criterion and thus are subject to additional permit obligations, such as requirements for increased monitoring and the development of a Hg minimization plan. The Idaho Fish Consumption Advisory Program (IFCAP) issues fish advisories to protect general and sensitive populations of fish consumers and has developed an action level of 0.22 mg/kg Hg in fish tissue. Fish consumption advisories are water body- and species-specific and are used to advise allowable fish consumption from specific water bodies. The geometric mean Hg concentration of 10 fish of a single species collected from a single water body (lake or stream) in Idaho is compared to the action level to determine if a fish consumption advisory should be issued. The U.S. Geological Survey collected and analyzed individual fillets of mountain whitefish (Prosopium williamsoni), rainbow trout (Oncorhynchus mykiss), smallmouth bass (Micropterus dolomieu), and channel catfish (Ictalurus punctatus) for Hg. The 2013 average Hg concentration for small mouth bass (0.32 mg/kg) collected at Brownlee Reservoir and for channel catfish (0.33 mg/kg) collected at the Boise River mouth, exceeded the Idaho water quality criterion (>0.3 mg/kg), the Hg RPTE threshold (>0.24 mg/kg), and the IFCAP action level (>0.22 mg/kg). Average Hg concentrations in fish collected in 2014 or 2015 did not exceed evaluation criteria for any of the species assessed. Selenium (Se) analysis was conducted on one composite fish tissue sample per site to assess general concentrations and to provide information for future risk assessments. Composite concentrations of Se in fish tissue collected between 2013 and 2015 ranged from 0.07 and 0.49 mg/kg wet weight with the highest concentration collected from smallmouth bass from the Snake River near Murphy, and the lowest from mountain whitefish from the Boise River at Eckert Road.
Download or read book North American Journal of Fisheries Management written by and published by . This book was released on 1999 with total page 1194 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Preliminary Assessment of Mercury in Freshwater Fish from Camden County New Jersey written by Academy of Natural Sciences of Philadelphia. Division of Environmental Research and published by . This book was released on 1994* with total page 42 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Contamination in New Jersey Freshwater Fish written by New Jersey. Toxics in Biota Committee and published by . This book was released on 1994 with total page 120 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Models for Fishes in the Catskill Region written by Colleen R. Parker and published by . This book was released on 2017 with total page 162 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury Concentrations in Water and Mercury and Selenium Concentrations in Fish from Brownlee Reservoir and Selected Sites in Boise and Snake Rivers Idaho and Oregon 2013 written by Dorene E. MacCoy and published by . This book was released on 2014 with total page 25 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury (Hg) analyses were conducted on samples of sport fish and water collected from six sampling sites in the Boise and Snake Rivers, and Brownlee Reservoir to meet National Pollution Discharge and Elimination System (NPDES) permit requirements for the City of Boise, Idaho. A water sample was collected from each site during October and November 2013 by the City of Boise personnel and was analyzed by the Boise City Public Works Water Quality Laboratory. Total Hg concentrations in unfiltered water samples ranged from 0.73 to 1.21 nanograms per liter (ng/L) at five river sites; total Hg concentration was highest (8.78 ng/L) in a water sample from Brownlee Reservoir. All Hg concentrations in water samples were less than the EPA Hg chronic aquatic life criterion in Idaho (12 ng/L). The EPA recommended a water-quality criterion of 0.30 milligrams per kilogram (mg/kg) methylmercury (MeHg) expressed as a fish-tissue residue value (wet-weight MeHg in fish tissue). MeHg residue in fish tissue is considered to be equivalent to total Hg in fish muscle tissue and is referred to as Hg in this report. The Idaho Department of Environmental Quality adopted the EPA's fish-tissue criterion and a reasonable potential to exceed (RPTE) threshold 20 percent lower than the criterion or greater than 0.24 mg/kg based on an average concentration of 10 fish from a receiving waterbody. NPDES permitted discharge to waters with fish having Hg concentrations exceeding 0.24 mg/kg are said to have a reasonable potential to exceed the water-quality criterion and thus are subject to additional permit obligations, such as requirements for increased monitoring and the development of a Hg minimization plan. The Idaho Fish Consumption Advisory Program (IFCAP) issues fish advisories to protect general and sensitive populations of fish consumers and has developed an action level of 0.22 mg/kg wet weight Hg in fish tissue. Fish consumption advisories are water body- and species-specific and are used to advise of allowable fish consumption from specific water bodies. The geometric mean Hg concentration of 10 fish of a single species collected from a single water body (lake or stream) in Idaho is compared to the action level to determine if a fish consumption advisory should be issued. The U.S. Geological Survey collected and analyzed individual fillets of mountain whitefish (Prosopium williamsoni), smallmouth bass (Micropterus dolomieu), and channel catfish (Ictalurus punctatus) for Hg. The median Hg concentration of 0.32 mg/kg exceeded the Idaho water-quality criterion at the site in Brownlee Reservoir. Average Hg concentrations from Brownlee Reservoir (0.32 mg/kg) and the Boise River at mouth (0.33 mg/kg) exceeded the Hg RPTE threshold (>0.24 mg/kg). IFCAP action levels also were exceeded at the sites on Brownlee Reservoir and at the mouth of the Boise River. Median Hg concentrations in fish at the remaining four river sites were less than 0.20 mg/kg with average concentrations ranging from 0.14 to 0.21 mg/kg Hg. Selenium (Se) analysis also was conducted on one composite fish tissue sample per site to screen for general concentrations and to provide information for future risk assessments. Concentrations of Se ranged from 0.07 to 0.49 mg/kg wet weight; average concentrations were highest in smallmouth bass (0.40 mg/kg) and lowest in mountain whitefish (0.12 mg/kg).
Download or read book Mercury Bioaccumulation and Biomagnification in the Warmwater Fish Communities of Two Connecticut Lakes with an Examination of Seasonal Variations in Mercury Concentrations written by Scott M. Ward and published by . This book was released on 1997 with total page 182 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Trends in Blood Mercury Concentrations and Fish Consumption Among U s Women of Childbearing Age Nhanes written by Environmental Protection Environmental Protection Agency and published by Createspace Independent Publishing Platform. This book was released on 2016-03-20 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Water Program Guidance for fiscal year (FY) 2012 describes how the U.S. Environmental Protection Agency (EPA), states, and tribal governments will work together to protect and improve the quality of the nation's water, including wetlands, and ensure safe drinking water (U.S. EPA, 2011). The Guidance describes the key actions needed to accomplish the public health and environmental goals proposed in the EPA 2011-2015 Strategic Plan (U.S. EPA, 2010). One goal is to protect public health by making finfish and shellfish safer to eat. Note that, unless otherwise specified, "fish" refers to both finfish and shellfish. One of the primary risks from eating fish is exposure to methylmercury (MeHg). In the U.S., exposure to MeHg in humans is largely through the consumption of fish (NRC, 2000). Mercury released into the environment is converted to MeHg in sediments and in the water column and bioaccumulates through aquatic food webs. This bioaccumulation leads to increased levels of MeHg in larger, older, predatory fish; concentrations in fish tissue may exceed a million fold the concentrations in water (NRC, 2000). MeHg exposure in utero is associated with adverse health effects, e.g., neurodevelopmental deficits such as IQ and motor function deficits in children (Mergler et al, 2007; NRC, 2000). In 2004 the FDA and EPA issued consumer advice. The advisory offers advice on amounts of commercial fish and fish from local water bodies that are safe to consume. This report investigates national trends over time in both blood mercury concentrations and fish consumption for women 16-49 years of age.
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 Trends in Blood Mercury Concentrations and Fish Consumption Among U S Women of Childbearing Age Nhanes written by Environmental Protection Environmental Protection Agency and published by CreateSpace. This book was released on 2015-06-16 with total page 72 pages. Available in PDF, EPUB and Kindle. Book excerpt: The National Water Program Guidance for fiscal year (FY) 2012 describes how the U.S. Environmental Protection Agency (EPA), states, and tribal governments will work together to protect and improve the quality of the nation's water, including wetlands, and ensure safe drinking water (U.S. EPA, 2011). The Guidance describes the key actions needed to accomplish the public health and environmental goals proposed in the EPA 2011-2015 Strategic Plan (U.S. EPA, 2010). One goal is to protect public health by making finfish and shellfish safer to eat. Note that, unless otherwise specified, "fish" refers to both finfish and shellfish. One of the primary risks from eating fish is exposure to methylmercury (MeHg). In the U.S., exposure to MeHg in humans is largely through the consumption of fish (NRC, 2000). Mercury released into the environment is converted to MeHg in sediments and in the water column and bioaccumulates through aquatic food webs. This bioaccumulation leads to increased levels of MeHg in larger, older, predatory fish; concentrations in fish tissue may exceed a million fold the concentrations in water (NRC, 2000). MeHg exposure in utero is associated with adverse health effects, e.g., neurodevelopmental deficits such as IQ and motor function deficits in children (Mergler et al, 2007; NRC, 2000). In 2004 the FDA and EPA issued consumer advice. The advisory offers advice on amounts of commercial fish and fish from local water bodies that are safe to consume. This report investigates national trends over time in both blood mercury concentrations and fish consumption for women 16-49 years of age.
Download or read book Mercury Concentrations in Fishes from Select Water Bodies in Trinity County California 2000 2002 written by Jason T. May and published by . This book was released on 2005 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
