Monit lab cit 470 power point example1/30/2024 ![]() ![]() ![]() Beryllium alloys can be divided into two categories: high beryllium content (up to 30% beryllium) and low beryllium content (2 to 3% beryllium). Beryllium oxide, in particular, is known for having a high heat capacity and is used primarily in select electronic equipment. īeryllium is typically used in industry as either a pure metal, beryllium oxide, or alloy. Clusters of berylliosis have also been linked to concrete dust exposure and beryllium manufacturing plants. īeryllium exposure has since been linked to workers in nuclear, defense, electronics, biomedical, and semiconductor industries, with the number of exposed US workers ranging from 21,200 to 800,000 between the 1970s and 1980s. It was first identified as a health hazard in the 1930s, and its acute and chronic toxic manifestations were discovered first in workers at a fluorescent lamp manufacturing plant. Beryllium is released into the environment through natural processes such as weathering or volcanic activity and artificially through processes such as mining and combustion. It is mediated via a type IV hypersensitivity reaction.īeryllium is a naturally occurring element typically distributed in soil and volcanic dust. Cases have become rare after increased government regulations were set into place.Ĭhronic beryllium disease, also known as berylliosis, is a pulmonary granulomatous disease that occurs in sensitized individuals. However, most beryllium exposure and resulting beryllium toxicity result from occupational exposure via inhalation, resulting in pulmonary disease.Īcute beryllium toxicity, an acute chemical pneumonitis, has been reported after high-intensity exposures. The general public can be exposed through waterways, food, air, and accidental soil contact or ingestion. Because of its high melting point, strength, and lightweight nature, it is commonly used in aerospace materials, electronics, defense technologies, X-ray equipment, and as an alloying element in conjunction with other metals such as copper, iron, or nickel. It is released into the environment through dust, airborne particles, and the combustion of fossil fuels. Beryllium is found naturally in coal, rocks, dust, and soil and is typically bonded with other elements. Beryllium is the fourth element in the periodic table and is a light, brittle, and gray alkaline earth metal. ![]()
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