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Parts per billion

Known as: parts per billion (ppb), ppb, Part Per Billion 
A unit of proportion equal to 10E-9.
National Institutes of Health

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Clinical Data Interchange Standards Consortium Terminology

Papers overview

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Review
2004
Review
2004
Prospects for enhancing carbon sequestration and reclamation of degraded lands with fossil-fuel combustion by-products
Highly Cited
2003
Highly Cited
2003
Quantitative determination of sulfur-containing wine odorants at sub parts per billion levels. 2. Development and application of a stable isotope dilution assay.
[(2)H(10)]-4-Mercapto-4-methylpentan-2-one (d(10)-1), [(2)H(2)]-3-mercaptohexan-1-ol (d(2)-2), and [(2)H(5)]-3-mercaptohex-1-yl… 
Highly Cited
2003
Highly Cited
2003
Utilization of ICP/OES for the determination of trace metal binding to different humic fractions.
Highly Cited
2002
Highly Cited
2002
Analysis of mono- to deca-brominated diphenyl ethers in chickens at the part per billion level.
Review
2002
Review
2002
Synthesis of the toxicological impacts of the Exxon Valdez oil spill on Pacific herring (Clupea pallasi) in Prince William Sound, Alaska, U.S.A.
Pacific herring (Clupea pallasi) in Prince William Sound (PWS) were affected by two major events in the past decade: the Exxon… 
Highly Cited
1995
Highly Cited
1995
Contribution from upper and lower airways to exhaled endogenous nitric oxide in humans
Endogenous nitric oxide (NO) is thought to regulate many biological functions, including pulmonary circulation and bronchomotion… 
Highly Cited
1987
Highly Cited
1987
Aldicarb immunomodulation in mice: An inverse dose-response to parts per billion levels in drinking water
The effects of aldicarb (a carbamate insecticide and nematocide) on selected immune and non-immune parameters of mice were… 
Highly Cited
1979
Highly Cited
1979
Use of microbore columns for the separation of substances of biological origin.
Highly Cited
1973
Highly Cited
1973
Determination of chlorinated dibenzo-p-dioxins and dibenzofurans in various materials.
The determination of specific chlorinated dibenzo-p-dioxins is complicated by the large number of structurally similar compounds… 
Highly Cited
1969
Highly Cited
1969
Fluorescence determinatioof sub-parts per billion hydrogen sulfide in the atmosphere.
In the following work, a fluorescnece method for the determination of sulfur as sulfide in organic compounds has been applied to… 
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