Document Detail


Variations in the isotopic composition of carbon in urban atmospheric carbon dioxide.
MedLine Citation:
PMID:  4167909     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Measurement of the abundance of atmospheric carbon dioxide as an indicator of air pollution has been of very limited value because of variations in urban areas in the substantial concentration of natural carbon dioxide produced from combustion and noncombustion (natural) sources. A solution to this problem is the use of precise isotopic assay of ratios of carbon-13 to carbon-12 in atmospheric carbon dioxide. There is very little variation of carbon isotopic composition in samples taken over rural or urban areas where rapid mixing and diffusion of gaseous combustion products is possible. Significant differences in this composition in samples taken at centrally located points at street level in the lower Manhattan business district show an increase in concentration of atmospheric carbon dioxide of roughly 20 percent produced primarily by automobile exhaust.
Authors:
L Friedman; A P Irsa
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Science (New York, N.Y.)     Volume:  158     ISSN:  0036-8075     ISO Abbreviation:  Science     Publication Date:  1967 Oct 
Date Detail:
Created Date:  1967-12-19     Completed Date:  1967-12-19     Revised Date:  2011-12-02    
Medline Journal Info:
Nlm Unique ID:  0404511     Medline TA:  Science     Country:  UNITED STATES    
Other Details:
Languages:  eng     Pagination:  263-4     Citation Subset:  IM    
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MeSH Terms
Descriptor/Qualifier:
Air Pollution*
Carbon Dioxide / analysis*
Carbon Isotopes / analysis*
Chromatography, Gas
New York City
Spectrum Analysis
United States
Vehicle Emissions
Chemical
Reg. No./Substance:
0/Carbon Isotopes; 0/Vehicle Emissions; 124-38-9/Carbon Dioxide

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine


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