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  • Facts About Smoke Detector Radiation from Americium 241
    In fact, alpha particles emitted by Americium 241 in smoke detectors have an extremely short range They are so weak that they can be stopped by a single sheet of paper As a result, the level of radioactivity present in Americium 241 smoke detectors is virtually undetectable
  • Americium-241 Half-Life, Decay, Uses, Smoke Detector, MSDS
    The ionizing α radiation from Americium-241 is utilized to create ions that produce a low and steady electric current When the smoke particles enter the chamber, they create a disturbance and trigger the alarm in the detector
  • Americium | ToxFAQs™ | ATSDR - Centers for Disease Control . . .
    How likely is americium to cause cancer? Americium has not been found to cause cancer in humans However, studies in animals have demonstrated that internal exposure to 241 Am can cause cancer in bone and liver, where americium is stored
  • HEALTH EFFECTS - Toxicological Profile for Americium - NCBI . . .
    Isolated accidental exposures to household products containing 241 Am (e g , ingestion of 241 Am-containing parts of smoke detectors) have been reported, but did not result in observed adverse health effects Available information on the health effects of americium is based entirely on effects observed in humans and animals from radioactivity
  • Americium-241 | Radiation Emergencies | CDC
    As a dust or fine powder, Am-241 can cause certain cancers When Am-241 powder is swallowed, absorbed through a wound, or inhaled it can stay in the body for decades Am-241 concentrates in the bones, liver, and muscles, exposing these organs to alpha particles
  • ATSDR Americium ToxFAQs - Agency for Toxic Substances and . . .
    HIGHLIGHTS: Very low levels of americium occur in air, water, soil, and food, as well as in smoke detectors Exposure to radioactive americium may result in increased cancer risk Americium has been found in at least 8 of the 1,636 National Priorities List (NPL) sites identified by the Environmental Protection Agency (EPA) What is americium?
  • Americium in Ionization Smoke Detectors | US EPA
    Ionization smoke detectors have a small americium source encased in a layer of foil and ceramic, which stops the alpha particles from traveling outside of the smoke detector Because of this shielding, the smoke detector poses no radiation health risk when they are properly handled





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