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Showing 1 to 12 of 12 for “"Mercury content"”.
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Mercury species in natural gas condensate
The presence of ultra-trace levels of mercury in industrial gas and condensate streams is a cause of both environmental and production concern. The toxic nature of the element, in all forms, together with its ability to shut-down large processing plants dictates a need for its accurate and precise …
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Current perceptions regarding the importance and safety of fish consumption and omega-3 fatty acid supplementation among pregnant women
… per week, and at least 30% were confused about mercury content. Over 60% of doctors did not provide recommendations regarding ω-3 intake. One-third of participants neither consumed the recommended amount of fish nor took an ω-3 supplement. Nearly 98% took an ω-3 supplement when advised by a …
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Recovery status and chemosensory cues affecting reproduction of freshwater mussels in the North Fork Holston River downstream of Saltville, Virginia
… observed in 1918, to one species in 1974 due to mercury pollution. To determine the degree of recovery of mussels in the NFHR downstream of Saltville, and to provide recommendations for future mussel translocation sites, 19 sites were surveyed using a snorkeling catch-per-unit-effort (CPUE) …
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Geochemical investigations of the late early Cambrian extinctions
… interpretation. In addition, iron speciation and mercury content analyses from the Flatwoods Member within the stratigraphic interval tentatively linked to the olenellid extinction suggest the occurrence of transient local euxinic (anoxic, sulfidic) conditions. These findings give support to the …
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Geochemical and Taphonomic Signatures of Freshwater Mussel Shells as Evidence of Mercury-Related Extirpations in the North Fork Holston River, Virginia
… freshwater mussel shells to assess the role of mercury contamination in the North Fork Holston River, an aquatic habitat affected by extensive extirpations of mussel populations starting in the early 1970's. Mussel shells (n=366) collected from 5 sites, upstream and downstream of Saltville …
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Development of Omega-3-Fatty Acid Enriched Finishing Feed and Value Added Tilapia Product
… due to its mild taste, cheap price and low mercury content. However some sources claim that farmed tilapia can be detrimental to human health due to high omega-6:3 ratios and low omega-3 content specifically eicosapentaenoic acid, docosapentaenoic acid, and docosahexaenoic acid. The …
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Relation between Heavy Metal on Smoking and Blood Pressure and Lipid Metabolism
… for analysis of heavy metals. We evaluated the content of heavy metal in hair of smokers and non-smokers and its influence to blood pressure and lipid metabolism. METHODS: We examined mineral concentration of hair in 236 healthy people who had visited health promotion center in a university …
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Transformations of mercury in the marine water column
Methylation of mercury (Hg) in the marine water column has been hypothesized to serve as the primary source of the bioaccumulating chemical species monomethylmercury (MMHg) to marine food webs. Despite decades of research describing mercury methylation in anoxic sediments by anaerobic bacteria, …
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Development, Growth, and Behavioral Ecology of Walleye as Influenced by Sublethal Exposure to Dietary Selenium
… in fish. These tissues were also analyzed for mercury content using cold-vapor atomic absorption. No significant differences in tissue selenium concentrations among sites could be determined that would explain differential walleye egg hatchability. The same conclusion was reached with the …
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Determination of illegal and toxic ingredients in face creams
… 6 digester was employed to determine metals (mercury, lead, chromium, nickel, cadmium, arsenic, etc.). Lastly, the study assessed potential health risk of the actives and metals through predictive risk assessment models developed by United States Environmental Protection Agency (USEPA). The …
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From Source to Surveillance: An Assessment of Liquid Elemental Mercury Mobilization in Soil, Downstream Reactivity, and Biomarkers of Exposure
<p>Mercury (Hg) is a toxic pollutant whose speciation will highly impact its fate and transformation in the environment. One understudied form is that of liquid elemental mercury (Hg0L), a dense non-aqueous phase liquid which, upon release to the environment, can persist in soil for decades. Over …