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Radionuclide Basics: Americium-241
Americium (chemical symbol Am) is a man-made radioactive metal that is solid under normal conditions. Americium is produced when plutonium absorbs neutrons in nuclear reactors or during nuclear weapons tests. Americium-241 is the most common form of Americium.
Americium in the Environment
Am-241 found in the environment is in the form of microscopic dust.
When released into air, americium deposits particles in the soil and water. Small particles in air can travel far from the release site.
In water, americium will stick to particles in the water or to the sediment at the bottom.
Deposited on soil, americium will stick to surface particles, but not go very deep into the ground.
Plants and vegetation growing in or nearby contaminated soil may take up small amounts of americium from the soil.
Americium Sources
Smoke Alarm
Exposure to any significant amount of Am-241 is unlikely under normal circumstances. Small amounts of it are found in the soil, plants and water from nuclear weapons testing.
If a cataclysm were to strike earth today and only a few thousand people survived in pockets around the world we'd be back to where we were in ancient times. Those most likely to survive would be the ones who still live close to the land; those dependent on technology wouldn't last long.