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Evaluation Of Methodology For Mercury Exposure Assessment With Field And Laboratory Studies
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Book Synopsis Evaluation of Methodology for Mercury Exposure Assessment with Field and Laboratory Studies by : Melissa Legrand
Download or read book Evaluation of Methodology for Mercury Exposure Assessment with Field and Laboratory Studies written by Melissa Legrand and published by . This book was released on 2005 with total page 201 pages. Available in PDF, EPUB and Kindle. Book excerpt: "The threat of environmental mercury (Hg), particularly methylmercury (MeHg), exposure to the health of humans has been well documented. Thus, it is important to monitor exposure and body burden for public health protection. The first objective of this thesis was to characterize the risk of Hg exposure in two Canadian coastal communities: Grand Marian (n = 91) and St. Andrews/St. Stephen (n = 52), New Brunswick, Canada, using dietary questionnaires and hair analysis. Average Hg intakes and body burden were below the most conservative guidelines. We attributed these results to the low Hg concentrations found in the species commonly consumed: haddock, canned tuna, lobster and pollock (all below 0.2 mg/kg). The analytical method employed to determine Hg in hair, cold vapor atomic absorption (CV-AAS), required a bundle of 100-150 hair strands and involved lengthy chemical digestion procedures which reduce throughput. Direct solid introduction techniques minimize these weaknesses. Our second and third objectives were to evaluate two such methods: (1) combustion, gold amalgamation, atomic absorption spectrometry (C-GA-AAS) and (2) laser ablation inductively coupled plasma mass spectrometry (LA-ICP-MS) for measuring total Hg in single hair strands. Hair samples with a wide range of Hg exposure were obtained from communities. A 1:1 relationship was observed between C-GA-AAS and the established CV-AAS for analysis of 1-cm hair segments. Additionally, the average relative standard deviation (RSD) of Hg between hair strands within an individual was 6.5 +/- 2.8%, thus justifying the use of a single hair strand for biomonitoring. With a limit of quantification of 0.10 ng of total Hg, a single hair strand with average weight of 0.5 mg and Hg concentrations of 0.2 mg/kg can be measured routinely. Using LA-ICP-MS, we showed that a single laser shot can sample hair material within 50 mum along a single hair strand which is equivalent to less than one day of" --
Book Synopsis Toxic Effects of Mercury by : Shabnum Nabi
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.
Book Synopsis Dissertation Abstracts International by :
Download or read book Dissertation Abstracts International written by and published by . This book was released on 2007 with total page 924 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mercury study report to Congress by :
Download or read book Mercury study report to Congress written by and published by DIANE Publishing. This book was released on with total page 1811 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Proceedings of the 1989 EPA/A & WMA International Symposium on Measurement of Toxic and Related Air Pollutants by :
Download or read book Proceedings of the 1989 EPA/A & WMA International Symposium on Measurement of Toxic and Related Air Pollutants written by and published by . This book was released on 1989 with total page 1016 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis EPA Publications Bibliography by : United States. Environmental Protection Agency
Download or read book EPA Publications Bibliography written by United States. Environmental Protection Agency and published by . This book was released on 1985 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Mercury study report to Congress Vol. 6 by :
Download or read book Mercury study report to Congress Vol. 6 written by and published by DIANE Publishing. This book was released on with total page 158 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Author :Scientific Group on Methodologies for the Safety Evaluation of Chemicals. Workshop Publisher : ISBN 13 : Total Pages :266 pages Book Rating :4.3/5 ( download)
Book Synopsis Risk Assessment for Neurobehavioral Toxicity by : Scientific Group on Methodologies for the Safety Evaluation of Chemicals. Workshop
Download or read book Risk Assessment for Neurobehavioral Toxicity written by Scientific Group on Methodologies for the Safety Evaluation of Chemicals. Workshop and published by . This book was released on 1996 with total page 266 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Federal Register written by and published by . This book was released on 1993-08-02 with total page 1040 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis ORD Publications Announcement by : Center for Environmental Research Information (U.S.).
Download or read book ORD Publications Announcement written by Center for Environmental Research Information (U.S.). and published by . This book was released on 1989 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis A Practical Guide to Understanding, Managing, and Reviewing Environmental Risk Assessment Reports by : Sally L. Benjamin
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 475 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 EPA 200-B. written by and published by . This book was released on 1998 with total page 856 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis EPA National Publications Catalog by : United States. Environmental Protection Agency
Download or read book EPA National Publications Catalog written by United States. Environmental Protection Agency and published by . This book was released on 1998 with total page 848 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Book Synopsis Selected Water Resources Abstracts by :
Download or read book Selected Water Resources Abstracts written by and published by . This book was released on 1990 with total page 772 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book EPA Publications Bibliography written by and published by . This book was released on 1998 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Energy Research Abstracts written by and published by . This book was released on 1995 with total page 782 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Index Medicus written by and published by . This book was released on 2004 with total page 1780 pages. Available in PDF, EPUB and Kindle. Book excerpt: Vols. for 1963- include as pt. 2 of the Jan. issue: Medical subject headings.
