CAS ID #: 7440-24-6
Affected Organ Systems: Musculoskeletal (Muscles and Skeleton)
Cancer Classification: None
Chemical Classification: Inorganic substances, Radionuclides (radioactive materials)
Summary: Strontium is a naturally occurring element found in rocks, soil, dust, coal, and oil. Naturally occurring strontium is not radioactive and is either referred to as stable strontium or strontium. Strontium in the environment exists in four stable isotopes, 84Sr (read as strontium eighty-four), 86Sr, 87Sr, 88Sr. Strontium compounds are used in making ceramics and glass products, pyrotechnics, paint pigments, fluorescent lights, and medicines. Strontium can also exist as several radioactive isotopes; the most common is 90Sr. 90Sr is formed in nuclear reactors or during the explosion of nuclear weapons. Radioactive strontium generates beta particles as it decays. One of the radioactive properties of strontium is half-life, or the time it takes for half of the isotope to give off its radiation and change into another substance. The half-life of 90Sr is 29 years.
Fact sheet that answers the most frequently asked questions about a contaminant and its health effects.
Summary about a hazardous substance taken from Chapter One of its respective ATSDR Toxicological Profile.
Isla de Vieques is part of the Commonwealth of Puerto Rico, located about 7 miles east-southeast of the main island of Puerto Rico. Until May 2003, the U.S. Navy owned approximately half of the island and conducted military exercises that included live bombing. The live bombing exercises were conducted until April 1999 in a 900-acre area known as the Live Impact Area. The Navy conducted exercises with practice bombs from May 2000 to May 2003.
Toxicological and Health Professionals
Succinctly characterizes the toxicologic and adverse health effects information for a hazardous substance.
Prioritization of substances based on a combination of their frequency, toxicity, and potential for human exposure at National Priorities List (NPL) sites.
The MRL is an estimate of the daily human exposure to a hazardous substance that is likely to be without appreciable risk of adverse, non-cancer health effects over a specified duration of exposure. The information in this MRL serves as a screening tool to help public health professionals decide where to look more closely to evaluate possible risk of adverse health effects from human exposure.
Succintly characterizes the toxicologic and adverse health effects information for mixtures of hazardous substances.
- Page last reviewed: March 3, 2011
- Page last updated: March 3, 2011
- Content source: Agency for Toxic Substances and Disease Registry