picocurie


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picocurie

(pi'ko-ku-re),

pCi

An amount of radiation equal to 10-12 curies.
See: becquerel
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References in periodicals archive ?
In the United States radon exposures are usually expressed in picocuries per liter (pCi/l).
The new proposal allows a set amount of waste concentrated at up to 50 picocuries per gram to be disposed of in existing oilfield special waste and large-volume industrial waste landfills in the state.
Highway 85, is proposing to accept waste with radioactive levels of up to 50 picocuries per gram under new Department of Health rules that took effect this year.
Federal scientists say contamination above the aquifers should remain suspended in the perpetually dry soil, a contention that critics say is unproved.In the hottest zones, radioactivity in the water reaches millions of picocuries per liter.
A: The EPA "action level" is 4.0 PicoCuries per liter.
Several wells had become contaminated by uranium after the water table rose in the area, to the point where radioactivity exceeded the California state maximum of 20 picocuries per liter.
In 1996, DOE, the state and EPA adopted an interim cleanup level of 651 picocuries (pCi) per gram.
The Environmental Protection Agency says that consistent exposure to 4 picocuries per liter over time is the danger line.
The scale is so radioactive, up to 100,000 picocuries of radium per gram, that the only landfill in the country that accepts naturally occurring radioactive wastes will not accept the scale from phosphate fertilizer production.
So far, teeth from children born in Miami-Dade County and other southeastern Florida counties have the highest concentrations of strontium-90 in the U.S., which might be explained by the fact that two nuclear reactors there emitted 10.39 trillion picocuries of radioactivity into the air between 1970 and 1987, an amount equal to about three-fourths of all the radioactivity released during the infamous Three Mile Island accident.
The final standards are: combined radium 226/228 of 5 picocuries per liter; a gross alpha standard for all alphas of 15 5 picocuries per liter, not including radon and uranium; and a combined standard of 4 millerems per year for beta emitters.
Radon levels are measured in picocuries per liter of air (pCi/L).