ppb


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ppb

Abbreviation for parts per billion.

ppb

parts per billion, usually based on a mass or volume of a substance.
References in periodicals archive ?
The cancer discovery in this infant and his subsequent treatment were fortuitous, but not a matter of chance, reflecting instead the longstanding collaboration of multiple institutions involved in PPB and DICER1 research: Children's Hospitals and Clinics of Minnesota, Children's National Medical Center in Washington, D.
Though the city was still far away from the original 85 ppb standard, it was slowly growing close to the revised 125 ppb standard.
The researchers collected leeches from clean lakes and then put some in water with copper at concentrations of either 10 or 20 ppb.
001), with survival in control aquaria differing from that in aquaria containing 40 ppb (LSD, p = 0.
It just means that if the utility did the testing the way it's supposed to--and that's a big if--no more than 10 percent of its customers had lead levels over 15 ppb.
Arsenic levels exceeding 10 ppb are found in 3,000 water systems serving 13 million people nationwide, according to the EPA.
km with individual sample values up to 25,000 ppb gold, in contrast to a mean background value of 19 ppb.
PPB was created for pet owners who need to bring their small pet when walking, jogging, hiking, bicycling or traveling by car, boat, or airplane.
Both pyrazines were prevalent in the cloth wrapper, at 100 ppb to 450 ppb, and in the outer rind of the cheeses, at 100 ppb to 705 ppb.
Shark species, however, averaged 750 ppb in their fat, and dolphins had 1,190 ppb.
She said the technology to detect and clean up perchlorate contamination has been improving, and a standard of 1 ppb is ``morally appropriate'' to protect the health of Californians.
Silver analyses ranged from 96 ppb Ag to greater than 100,000 ppb Ag.