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Tritium (from Ancient Greek τρίτος (trítos) 'third') or hydrogen-3 (symbol T or 3 H) is a rare and radioactive isotope of hydrogen with a half-life of ~12.3 years. The tritium nucleus (t, sometimes called a triton) contains one proton and two neutrons, whereas the nucleus of the common isotope hydrogen-1 (protium) contains one proton and no neutrons, and that of non-radioactive hydrogen ...
HTO has a short biological half-life in the human body of 7 to 14 days, which both reduces the total effects of single-incident ingestion and precludes long-term bioaccumulation of HTO from the environment. The biological half life of tritiated water in the human body, which is a measure of body water turn-over, varies with the season.
Many metals, particularly heavy metals are toxic, but some are essential, and some, such as bismuth, have a low toxicity. Metals in an oxidation state abnormal to the body may also become toxic: chromium(III) is an essential trace element, but chromium(VI) is a carcinogen. Only soluble metal-containing compounds are toxic.
Groundwater containing low levels of radioactive material may have reached the edge of the Mississippi River, the energy company responsible for the leak from its nuclear power plant in Monticello ...
Kidney toxicity [5] associated with kidney failure; associated with development of cancer, particularly of the urinary tract, known carcinogen [8] [9] Atractylate Atractylis gummifera: Liver damage, [3] nausea, vomiting, epigastric and abdominal pain, diarrhoea, anxiety, headache and convulsions, often followed by coma [10]
Broadly, long-term exposure to toxic heavy metals can have carcinogenic, central and peripheral nervous system, and circulatory effects. For humans, typical presentations associated with exposure to any of the "classical" [37] toxic heavy metals, or chromium (another toxic heavy metal) or arsenic (a metalloid), are shown in the table. [38]
Tritium excretion can be accelerated further by increasing water intake to 3–4 liters/day. [11] Direct, short-term exposure to small amounts of tritium is mostly harmless. If a tritium tube breaks, one should leave the area and allow the gas to diffuse into the air. Tritium exists naturally in the environment, but in very small quantities.
Besides the individual toxic effects of each metal, a wide range of metals are nephrotoxic in humans and/or in animals. [29] Some metals and their compounds are carcinogenic to humans. [ citation needed ] A few metals, such as lead and mercury, can cross the placental barrier and adversely affect fetal development . [ 30 ]