Download or read book Health Study to Assess the Human Health Effects of Mercury Exposure to Fish Consumed from the Everglades written by and published by . This book was released on 1995 with total page pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Mercury as a Global Pollutant Human Health Issues written by Brian Wheatley and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: ACKNOWLEDGEMENTS PART 1 FISH CONSUMPTION AND METHYLMERCURY EXPOSURE IN THE AMAZON A. C. BARBOSA, A. M. GARCIA, J. R. DESOUZAI Mercurycontamination inhairofriverine 1-8 populations of Apiacas Reserve in the Brazilian Amazon E. D. BIDONE, Z. C. CASTILHOS, T. J. S. SANTOS, T. M. C. SOUZA and L. D. LACERDA I Fish contamination and human exposure to mercury in Tartarugalzinho River, Amapa State, Northern Amazon, Brazil. A screening approach 9-15 H. A. KEHRIG, O. MALM and H. AKAGI I Methylmercury in hair samples from different riverine groups, Amazon, Brazil 17-29 J. LEBEL, M. ROULET, D. MERGLER, M. LUCOTTE and F. LARRIBE I Fish diet and 31-44 mercury exposure in a riparian Amazonian population O. MALM. , J. R. D. GUIMARAES, M. B. CASTRO, W. R. BASTOS, J. P. VIANA, F. J. P. BRANCHES, E. G. SILVEIRA and W. C. PFEIFFER I Follow-up of mercury levels in fish, human hairand urine in the Madeira and Tapaj6s basins, Amazon, Brazil 45-51 PART 2 CHILD DEVELOPMENT AND LONG TERM EXPOSURE G. J. MYERS, P. W. DAVIDSON, C. COX, C. F. SHAMLAYE, O. CHOISY, E. CERNICHIARI, A. CHOI, J. SLOANE-REEVES, C. AXTELL, P. GAO and T. W. CLARKSON I The Seychelles child development study: Results and new directions through twenty-nine months 53-61 B. WHEATLEY, S. PARADIS, M. LASSONDE, M. -F. GIGUERE and S.
Download or read book Toxicological Effects of Methylmercury written by National Research Council and published by National Academies Press. This book was released on 2000-09-27 with total page 364 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury is widespread in our environment. Methylmercury, one organic form of mercury, can accumulate up the aquatic food chain and lead to high concentrations in predatory fish. When consumed by humans, contaminated fish represent a public health risk. Combustion processes, especially coal-fired power plants, are major sources of mercury contamination in the environment. The U.S. Environmental Protection Agency (EPA) is considering regulating mercury emissions from those plants. Toxicological Effects of Methylmercury reviews the health effects of methylmercury and discusses the estimation of mercury exposure from measured biomarkers, how differences between individuals affect mercury toxicity, and appropriate statistical methods for analysis of the data and thoroughly compares the epidemiological studies available on methylmercury. Included are discussions of current mercury levels on public health and a delineation of the scientific aspects and policy decisions involved in the regulation of mercury. This report is a valuable resource for individuals interested in the public health effects and regulation of mercury. The report also provides an excellent example of the implications of decisions in the risk assessment process for a larger audience.
Download or read book Mercury and the Everglades A Synthesis and Model for Complex Ecosystem Restoration written by Darren G. Rumbold and published by Springer Nature. This book was released on 2019-11-30 with total page 287 pages. Available in PDF, EPUB and Kindle. Book excerpt: This book integrates 30 years of mercury research in the Florida Everglades to inform scientists and policy makers. The Everglades is an iconic ecosystem by virtue of its expanse; diversity of biota; and multiple international designations. Despite this, the Everglades has been subjected to multiple threats including: habitat loss, hydrologic alterations, invasive species and altered water quality. Less well recognized as a threat to Everglades human use and wildlife populations is the toxic metal, mercury. The first half of Volume II focuses on biogeochemistry and factors unique to the Everglades that make it extraordinarily susceptible to mercury methylation following its deposition: warm subtropical climate, shallow depth, high levels of dissolved organic matter, sulfate contamination, nutrient enrichment and sediment redox conditions (for review of atmospheric mercury deposition significance, see Vol. I). The second half of Volume II answers the “so what” question – why biomagnification of the methylmercury produced in the Everglades is a threat to the health of top predators including humans. The results of the synthesis presented in Volume II suggest that the mercury problem in the Florida Everglades is one of the worst in the world due to its areal extent and the degree of risk to ecological receptors and humans.
Download or read book A Human Health Risk Assessment of Mercury in Fish from the San Diego River written by and published by . This book was released on 2015 with total page 58 pages. Available in PDF, EPUB and Kindle. Book excerpt: Methylmercury is the most toxic organic form of mercury in the environment and humans are exposed mainly from the consumption of contaminated fish and shellfish. Methylmercury poisoning can cause adverse health effects including muscle weakness, disrupted motor function, and memory loss, and prenatal exposure can lead to problems with mental and motor development once a child is born. The utilization of the San Diego River in San Diego, CA for recreational and subsistence fishing has created a need for updated information on the human health risk posed by consumption of fish from the river. This study quantified the levels of Methylmercury found in four fish species (Micropterus salmoides or largemouth bass, n=20; Lepomis macrochirus or bluegill, n=11; Lepomis cyanellus, or green sunfish, n=4; and Ameiurus nebulosus or brown bullhead, n=3) from three locations on San Diego River. Muscle tissue analysis was carried out with a DMA-80 Direct Mercury Analyzer. Mercury levels from existing data for largemouth bass from El Capitan Reservoir was also used. A human health risk assessment was completed with data from this study and the El Capitan data set to calculate hazard quotients for 11 different scenarios for recreational and subsistence fishers in the San Diego River. Adverse health effects are likely to occur for recreational fishers who catch and consume maximally contaminated largemouth bass from El Capitan Reservoir, or all study species from the river at the rate of 17.5 g/day. Adverse health effects are also likely to occur for subsistence fishers who catch and consume only large mouth bass, a combination of large mouth bass and bluegill, or all study species from the river at the rate of 142.4 g/day. Additionally, adverse health effects were shown likely to occur for subsistence fishers who catch and consume largemouth bass from El Capitan Reservoir, however these risks are rare due to the financial burden associated with fishing at the reservoir. Overall, consuming fish caught from the San Diego River can be considered safe for recreational fishers, however subsistence fishers should limit their consumption to four 8-ounce servings of any species per week, or target only bluegill.
Download or read book Hazardous Substances Public Health written by and published by . This book was released on 1993 with total page 12 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book A Practical Guide to Understanding Managing and Reviewing Environmental Risk Assessment Reports written by Sally L. Benjamin and published by CRC Press. This book was released on 2001-02-21 with total page 515 pages. Available in PDF, EPUB and Kindle. Book excerpt: A Practical Guide to Understanding, Managing and Reviewing Environmental Risk Assessment Reports provides team leaders and team members with a strategy for developing the elements of risk assessment into a readable and beneficial report. The authors believe that successful management of the risk assessment team is a key factor is quality repor
Download or read book Mercury Contamination in the Northeastern United States written by Hannah Abigail Shayler and published by . This book was released on 2008 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury contamination poses a known threat to human health, yet the degree of contamination and resulting human exposure remains unknown in many regions. Assessments of the relative risks of fish consumption are fundamentally limited by the availability of data characterizing fish consumption behaviors in a given region and the mercury concentrations in fish consumed by humans, as well as by a lack of scientific consensus about how a given level of mercury exposure is likely to affect a particular fish consumer. Existing mercury data and research findings are often not accessible to fish consumers or communicated clearly and consistently. This thesis integrates two related, yet distinct, perspectives regarding how the availability of scientific information affects decision making about the consumption of mercurycontaminated fish through a focused study of the fish consumption and mercury exposure of one community of Adirondack anglers, as well as through a broader consideration of how data collection efforts can best provide information to protect human health. This effort had two overall goals: (1) to characterize how the collection, interpretation, and communication of mercury data influence the availability and clarity of information for decision making about fish consumption; and (2) to recommend how data collection, risk assessment, and risk communication efforts can foster informed, science-based decision making about fish consumption. The first part of this research effort builds upon ongoing assessments of mercury contamination by integrating available local, regional, and national fish mercury datasets with participant consumption records to estimate the mercury exposure of fish consumers (N=17), particularly anglers and families consuming fish species sport-caught from privately owned fishing preserves in the Adirondack region. We compared exposure estimates to measured mercury concentrations in participant hair samples and to recommended health guidelines. The estimated mercury exposure of 35% of participants exceeded the USEPA reference dose for methylmercury; 35% of measured hair mercury concentrations exceeded recommended levels, and the estimated mercury exposure and measured hair mercury concentrations of 29% of participants exceeded both guidelines. Fifty years of angling catch records showed a noticeable decrease in the percentage of the total catch kept for consumption rather than caught and released; this change in angling behavior is estimated to have reduced the mean mercury exposure of our study community from preserve sport-caught fish (e.g., from the waters of private Adirondack fishing preserves alone) by 84%. In the second part of this thesis, we review recent efforts to collect and integrate fish mercury data in the northeastern United States, a region that is particularly influenced by atmospheric deposition of mercury, and provide suggestions to improve and focus future research and monitoring efforts to better address threats to human health. Resource and sampling limitations have hindered comprehensive understanding of mercury in the environment and relative levels of methylmercury exposure through fish consumption. Because of these limitations, data collection should maximize the benefits of information gained by monitoring programs. By selecting appropriate target species - those species and sizes of fish harvested for consumption and those with the highest and most variable mercury concentrations at a given location - health and fisheries professionals can more comprehensively advise fish consumers and inform the protection of human health. Overall, the findings from this study will inform our understanding of: (1) how the availability and clarity of mercury information influence decision making about fish consumption, and (2) how a more comprehensive approach to data collection can more clearly characterize the relative risks to anglers and their families and thereby foster informed, science-based decision making about fish consumption.
Download or read book Mercury Health Effects Update written by and published by . This book was released on 1984 with total page 164 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 Predicting the Risk of Mercury Exposure Related to Freshwater Fish Consumption a Model for Qualitative Risk Assessment of Environmental Threats to Public Health written by Alissa Barron and published by . This book was released on 2001 with total page 206 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Handbook of Human Toxicology written by Edward J. Massaro and published by CRC Press. This book was released on 1997-07-09 with total page 1196 pages. Available in PDF, EPUB and Kindle. Book excerpt: Covering some of the most important topics in modern toxicology, the Handbook of Human Toxicology is a unique and valuable addition to the current literature. It addresses issues, answers questions, and provides data related to. Within each of these five major sections are several carefully selected topics that reflect the current state of human to
Download or read book Human Health Risk Assessment of Mercury in Fish and Health Benefits of Fish Consumption written by and published by . This book was released on 2007 with total page 0 pages. Available in PDF, EPUB and Kindle. Book excerpt: March 2007 and Health Benefits of Fish Consumption The Bureau of Chemical Safety would like to acknowledge the contribution of the following organizations in the development of this document: Bureau of Nutritional Sciences, Food Directorate, Health Products and Food Branch, Health Canada Office of Nutrition Policy and Promotion, Health Products and Food Branch, Health Canada Healthy Environments a [...] BACKGROUND 1.1 Purpose of this document 1.2 Sources of Human Exposure to Mercury 1.3 The Chemical Forms of Mercury in Fish 1.4 The Ratio of Methylmercury to Total Mercury in Retail Fish 2.0 HAZARD CHARACTERISATION: HEALTH HAZARDS OF METHYLMERCURY 3.0 HEALTH BENEFITS OF FISH CONSUMPTION 4.0. [...] The need for a management strategy to reduce the risk of unacceptable exposures to mercury from fish consumption was first identified by the Health Protection Branch (now the Health Products and Food Branch) of Health Canada in the late 1960s, when it established a standard1 for mercury in fish. [...] The An-3@ indicates that, starting from the end of the carbon-chain furthest from the acid portion of the molecule, the first double bond appears at the third carbon. [...] In the assessment of risk of methylmercury exposure through fish consumption, BCS did not consider, in a quantitative manner, the nutritional benefits of fish consumption against the risks of methylmercury exposure.
Download or read book Oceans and Human Health written by Patrick J. Walsh and published by Academic Press. This book was released on 2011-09-02 with total page 669 pages. Available in PDF, EPUB and Kindle. Book excerpt: Oceans and Human Health highlights an unprecedented collaboration of environmental scientists, ecologists and physicians working together on this important new discipline, to the benefit of human health and ocean environmental integrity alike. Oceanography, toxicology, natural products chemistry, environmental microbiology, comparative animal physiology, epidemiology and public health are all long established areas of research in their own right and all contribute data and expertise to an integrated understanding of the ways in which ocean biology and chemistry affect human health for better or worse. This book introduces this topic to researchers and advanced students interested in this emerging field, enabling them to see how their research fits into the broader interactions between the aquatic environment and human health. Color illustrations of aquatic life and oceanic phenomena such as hurricanes and algal blooms Numerous case studies Socio-economic and Ethical Analyses place the science in a broader context Study questions for each chapter to assist students and instructors Risks and remedies sections to help define course modules for instruction
Download or read book Toxic Effects of Mercury written by Shabnum Nabi and published by Springer. This book was released on 2014-07-25 with total page 265 pages. Available in PDF, EPUB and Kindle. Book excerpt: Mercury is widespread in our environment. Methylmercury, an organic form of mercury, can accumulate in the aquatic food chain and lead to high concentrations in predatory fish. When consumed by humans, contaminated fish represent a public health risk. Toxic Effects of Mercury intends to facilitate among its readers the understanding of the importance of mercury pollution in the environment and the health consequences associated with exposure to this metal. The knowledge on methylmercury (MeHg) toxicity collected over the years is undoubtedly robust creating an impression all that is to be learnt about this metal has already been accomplished. However, in large measure, past knowledge has merely laid the ground for interesting questions that have yet to be fully addressed and concepts have yet to be deciphered. One of my major goals was to make a valiant attempt to include state-of-the-art information on the mechanisms of mercury toxicity, describing its effects on cultured cellular systems as well as in whole living organisms, starting from the lessons learned from the tragic events in Minamata Bay, Japan. A special focus of the book is on the neurotoxic effects of MeHg. An understanding at the cellular level is necessary to gather information on the structural and functional alterations induced by MeHg and how they possibly become unmasked and evident at the behavioral level, 32 chapters of the book have been organised having these considerations in mind. This book will provide state-of-the-art information to the graduate students training in toxicology, risk assessors, researchers and medical providers at large. It is aimed to bring the readers updated information on contemporary issues associated with exposure to methylmercury, from its effects on stem cells and neurons to population studies. It is a valuable resource for individuals interested in the public health effects and regulation of mercury. The report provides an excellent example of the implications of decisions in the risk assessment process for a larger audience and is written with the hope that the information will provide better understanding of the mercury problems which confront us.
Download or read book Regional Issues in Aquifer Storage and Recovery for Everglades Restoration written by National Research Council and published by National Academies Press. This book was released on 2003-01-16 with total page 75 pages. Available in PDF, EPUB and Kindle. Book excerpt: The report reviews a comprehensive research plan on Everglades restoration drafted by federal and Florida officials that assesses a central feature of the restoration: a proposal to drill more than 300 wells funneling up to 1.7 billion gallons of water a day into underground aquifers, where it would be stored and then pumped back to the surface to replenish the Everglades during dry periods. The report says that the research plan goes a long way to providing information needed to settle remaining technical questions and clearly responds to suggestions offered by scientists in Florida and in a previous report by the Research Council.
Download or read book Evaluating the Public Health Risks of Methylmercury Exposure and Benefits from Omega 3 Fatty Acids and Selenium from Fish Consumption written by Leanne K. Cusack and published by . This book was released on 2014 with total page 135 pages. Available in PDF, EPUB and Kindle. Book excerpt: Although fish are a nutritious food source, they also are the main source of methylmercury exposure in U.S. populations. This research examined the risks from methylmercury and benefits from omega-3 fatty acids and selenium from fish consumption. The first study provided the first region-specific quantitative risk/benefit analysis for nine commonly consumed freshwater fish species in the Columbia River Basin; which is home to many Native American Tribes and subsistence fishermen who consume large quantities of locally caught fish. (Donatuto and Harper 2008; Harper and Harris 2008)(Donatuto and Harper 2008; Harper and Harris 2008) My results showed that mountain whitefish and rainbow trout provided a net benefit for cardiovascular risk and improved infant visual response memory scores across all consumption rates in all subregions in which they were sampled. The second study examined the associations between region of residence, demographic characteristics and total blood mercury concentrations in a nationally representative sample of women of childbearing age, using the 1999-2010 NHANES database. Women who live in the Atlantic and Pacific coastal regions have the highest, and women in the Midwest have the lowest, methymercury concentrations in their blood. The third study analyzed intra-and inter-specific variability in selenium: mercury molar ratios in ten species of freshwater fish from the Columbia River Basin to determine the potential application for fish consumption guidelines. Variability in selenium:mercury molar ratios was high within the fish species regardless of fish size. This variability within fish species warrants caution in using selenium:mercury ratios in risk assessment calculations. Overall, this research demonstrates the complexities involved in crafting guidelines that consider both the risks and benefits of fish consumption.
