![]() This leaves a deposit of radioactive polonium and lead on the leaves. This coincided with the increase in the use of phosphate fertilizers by tobacco growers - calcium phosphate ore accumulates uranium and slowly releases radon gas.Īs radon decays, its electrically charged daughter products attach themselves to dust particles, which adhere to the sticky hairs on the underside of tobacco leaves. But during the same period, the level of polonium -210 in American tobacco had tripled. 1 cancer killer in 1980 (72/100,000) in spite of an almost 20 percent reduction in smoking. Lung cancer rates among men kept climbing from a rarity in 1930 (4/100,000 per year) to the No. Polonium -210 is the only component of cigarette smoke that has produced cancer by itself in laboratory animals by inhalation - tumors appeared already at a polonium level five times lower than those of a normal heavy smoker. Polonium is studied in a few nuclear research laboratories where its high radioactivity as an alpha-emitter requires special handling techniques and precautions. Polonium is produced in about 100 g/year by bombarding bismuth with neutrons in a nuclear reactor. ![]() it is found in uranium ores, but none extract it form these ores. Polonium is a very rare element in nature. It is used as a source of alfa-radiation for research and, alloyed with beryllium it can act as a portable source of neutrons, which normally only access to a nuclear reactor can provide. Polonium was once used in textile mills (to eliminate static charges) and by the manufacturers of photographic plates (in brushes to remove the accumulated dust). it is fairly volatile: about half of a sample of it will evaporate within 3 days (unless it is kept in a sealed container). It is reactive, silvery-gray, it dissolves in dilute acids, but it is only slightly soluble in alkalis. Polonium is a radioactive, extremely rare semi-metal. Polonium (Po), a chemical element Propylene oxide, an organic compound. ![]() Po, Chiang Rai, a village in Thailand Science, technology, and mathematics Computing.po, a filename extension Petaoctet (Po), a unit of information storage Product owner, a role in Scrum, a software development strategy Other uses in science, technology, and mathematics. Shop for Mens & Women's Footwear, Apparel & Skateboarding Gear on the Official Website. Chemical properties of polonium - Health effects of polonium - Environmental effects of poloniumĮlement is a a streetwear brand with Skateboarding at its roots. ![]()
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