17O/16O and18O/16O isotope measurements of atmospheric carbon monoxide and its sources

Amy K. Huff; Mark H. Thiemens

doi:10.1029/98GL02603

¹⁷O/¹⁶O and¹⁸O/¹⁶O isotope measurements of atmospheric carbon monoxide and its sources

Amy K. Huff, Mark H. Thiemens

Meteorology and Atmospheric Science

Research output: Contribution to journal › Article › peer-review

38 Scopus citations

Abstract

Simultaneous ¹⁷O/¹⁶O and ¹⁸O/¹⁶O measurements of atmospheric carbon monoxide (CO) and two of its major sources are presented. CO was collected in situ at ground level in La Jolla, CA, Pasadena, CA and White Mountain, CA, altitude 3.8 km. Samples were also taken directly from engine exhaust and during a local wild brushfire. Results indicate that atmospheric carbon monoxide has a significant mass independent component, which increases as carbon monoxide concentrations decrease. The origin of the observed mass independent fractionation is discussed. CO samples from engine exhaust and brushfires are clearly mass dependent, but with a wide variation in ¹⁸O values from different engines.

Original language	English (US)
Pages (from-to)	3509-3512
Number of pages	4
Journal	Geophysical Research Letters
Volume	25
Issue number	18
DOIs	https://doi.org/10.1029/98GL02603
State	Published - Sep 15 1998

All Science Journal Classification (ASJC) codes

Geophysics
General Earth and Planetary Sciences

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10.1029/98GL02603

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abstract = "Simultaneous 17O/16O and 18O/16O measurements of atmospheric carbon monoxide (CO) and two of its major sources are presented. CO was collected in situ at ground level in La Jolla, CA, Pasadena, CA and White Mountain, CA, altitude 3.8 km. Samples were also taken directly from engine exhaust and during a local wild brushfire. Results indicate that atmospheric carbon monoxide has a significant mass independent component, which increases as carbon monoxide concentrations decrease. The origin of the observed mass independent fractionation is discussed. CO samples from engine exhaust and brushfires are clearly mass dependent, but with a wide variation in 18O values from different engines.",

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N2 - Simultaneous 17O/16O and 18O/16O measurements of atmospheric carbon monoxide (CO) and two of its major sources are presented. CO was collected in situ at ground level in La Jolla, CA, Pasadena, CA and White Mountain, CA, altitude 3.8 km. Samples were also taken directly from engine exhaust and during a local wild brushfire. Results indicate that atmospheric carbon monoxide has a significant mass independent component, which increases as carbon monoxide concentrations decrease. The origin of the observed mass independent fractionation is discussed. CO samples from engine exhaust and brushfires are clearly mass dependent, but with a wide variation in 18O values from different engines.

AB - Simultaneous 17O/16O and 18O/16O measurements of atmospheric carbon monoxide (CO) and two of its major sources are presented. CO was collected in situ at ground level in La Jolla, CA, Pasadena, CA and White Mountain, CA, altitude 3.8 km. Samples were also taken directly from engine exhaust and during a local wild brushfire. Results indicate that atmospheric carbon monoxide has a significant mass independent component, which increases as carbon monoxide concentrations decrease. The origin of the observed mass independent fractionation is discussed. CO samples from engine exhaust and brushfires are clearly mass dependent, but with a wide variation in 18O values from different engines.

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¹⁷O/¹⁶O and¹⁸O/¹⁶O isotope measurements of atmospheric carbon monoxide and its sources

Abstract

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