strontium 90

Thân thiện

Strontium 90 is a hazardous component of nuclear fallout.

Definition

1. Noun:
   • A radioactive isotope of strontium: A specific, unstable form of the element strontium, identified by its mass number (90 protons and neutrons combined). It is a significant component of radioactive fallout from nuclear explosions and is biologically hazardous because the body can mistake it for calcium and incorporate it into bone tissue.

Usage Examples

• Noun:
  • Strontium 90 is a dangerous byproduct of nuclear fission.
  • The study measured levels of strontium 90 in the soil decades after the atmospheric tests.
  • Due to its long half-life, strontium 90 in the environment remains a concern for public health.

Advanced Usage

• Scientific Context: The term is used precisely in nuclear physics, environmental science, and health physics to discuss contamination, dose assessment, and radioactive decay chains.
  • The biogeochemical pathway of strontium 90 from fallout to the human food chain is well documented.

Variants and Related Words

• Strontium (n): The stable, non-radioactive chemical element (Sr).
• Isotope (n): A form of an element with the same number of protons but a different number of neutrons.
• Fallout (n): Radioactive particles dispersed into the atmosphere after a nuclear explosion.

Synonyms

• Radioactive strontium: A more general descriptive term.
• Sr-90: The common scientific abbreviation.

Related Phrases

• Assimilation into bone: The key biological process that defines the primary health risk of this isotope.
• Fallout constituent: Describes its origin and environmental presence.

Học thuật

Noun

1. a radioactive isotope of strontium (with the mass number 90) that is present in the fallout from nuclear explosions; can be assimilated like calcium into bones