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Methylmercury (sometimes methyl mercury) is an organometallic cation with the formula [CH 3 Hg] +. It is the simplest organomercury compound. Methylmercury is extremely toxic, and its derivatives are the major source of organic mercury for humans.
Mercury methylation is the process of forming methylmercury (MeHg). The methylation of mercury can occur abiotically or biotically. Biotically, the primary methylators of mercury are sulfate-reducing and iron-reducing bacteria. [1] Three mechanisms have been proposed for the biotic methylation of mercury by sulfate-reducing bacteria. [2]
Analysis of blood mercury concentrations in childbearing women has documented that exposure to methyl mercury (MeHg) occurs primarily through the consumption of fish. [20] The U.S. Food and Drug Administration (FDA) highly recommends against pregnant women and young children consuming raw fish. Pregnant women and young children often lack ...
Used in the measurement of trace amounts of volatile heavy metals such as mercury, cold vapour AFS makes use of the unique characteristic of mercury that allows vapour measurement at room temperature. [citation needed] Free mercury atoms in a carrier gas are excited by a collimated ultraviolet light source at a wavelength of 253.7 nanometres ...
Organomercury compounds contain at least one carbon bonded to a mercury atom, shown here. Organomercury chemistry refers to the study of organometallic compounds that contain mercury . Many organomercury compounds are highly toxic, but some are used in medicine, e.g., merbromin ("Mercurochrome") and the vaccine preservative thiomersal .
A 1977 report by a Health and Welfare Canada's Task Force on Organic Mercury in the Environment that was formed in 1972, submitted a report that said that found that "despite elevated mercury levels, the clinical tests performed on six locals showed no acute or chronic effects of methyl-mercury poisoning." [31] [32]
Her exposure was later confirmed by hair analysis, which showed a dramatic jump in mercury levels 17 days after the initial accident, peaking at 39 days, followed by a gradual decline. [8] Approximately three months after the initial accident Wetterhahn began experiencing brief episodes of abdominal discomfort and noticed significant weight loss.
Mercury poisoning is a type of metal poisoning due to exposure to mercury. [3] Symptoms depend upon the type, dose, method, and duration of exposure. [3] [4] They may include muscle weakness, poor coordination, numbness in the hands and feet, skin rashes, anxiety, memory problems, trouble speaking, trouble hearing, or trouble seeing. [1]