Environmental Protection Agency for people who eat the fish regularly.įish and shellfish concentrate mercury in their bodies, often in the form of methylmercury, a highly toxic organic compound of mercury. 25% of the fish tested had mercury levels above the safety levels determined by the U.S. They found mercury even in fish of isolated rural waterways. They found mercury in every fish tested, according to the study by the U.S. US government scientists tested fish in 291 streams around the country for mercury contamination. That is why larger, longer-living predators such as sharks and swordfish tend to have more of the toxin than smaller fish such as sardines, sole, and trout. Mercury-containing plants and tiny animals are eaten by smaller fish that are then eaten by larger fish, whose tissue accumulates mercury. The type and degree of symptoms exhibited depend upon the individual toxin, the dose, and the method and duration of exposure. Symptoms typically include sensory impairment (vision, hearing, speech), disturbed sensation and a lack of coordination. Mercury poisoning (also known as hydrargyria or mercurialism) is a type of metal poisoning and a medical condition caused by exposure to mercury or its compounds. Mercury can cause both chronic and acute poisoning. The most toxic forms of mercury are its organic compounds, such as dimethylmercury and methylmercury. Mercury can be absorbed through the skin and mucous membranes and mercury vapors can be inhaled, so containers of mercury are securely sealed to avoid spills and evaporation. Mercury occurs in deposits throughout the world mostly as cinnabar (mercuric sulfide). It is commonly known as quicksilver and was formerly named hydrargyrum. Mercury is defined as a chemical element with symbol Hg and atomic number 80. Bed Mattress Size Chart for US, UK, EU, RV, Trucks.International Prostate Symptom Score (IPSS) Test and Chart.
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