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Elemental and organic carbon particle concentrations: A long-term perspective

Gray, H. A. and Cass, G. R. and Huntzicker, J. J. and Heyerdahl, E. K. and Rau, J. A. (1984) Elemental and organic carbon particle concentrations: A long-term perspective. Science of the Total Environment, 36 . pp. 17-25. ISSN 0048-9697. doi:10.1016/0048-9697(84)90243-2.

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Long-term trends in organic and elemental carbon particle concentrations can be explored by establishment of new routine air monitoring programs, by analysis of archived filter samples, and by calibration of reflectance-based tape samplers to read in terms of equivalent elemental carbon concentrations. These methods have been combined to study the long-term history of organic and elemental carbon particle concentrations at Downtown Los Angeles. Particulate elemental and organic carbon concentrations both peak during winter months, a behavior characteristic of primary traffic-derived pollutants like CO and lead. The ratio of total carbon to elemental carbon present in fine particles in Downtown Los Angeles shows little seasonal dependence, and averages 2.6:1 over an annual cycle, a composition that approximates the ratio of total to elemental carbon in primary source emissions.

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Additional Information:© 1984 Elsevier B.V. This work was supported by the California Air Resources Board under Grant No. A1-071-32.
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California Air Resources BoardA1-071-32
Record Number:CaltechAUTHORS:20160810-134136019
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Official Citation:H.A. Gray, G.R. Cass, J.J. Huntzicker, E.K. Heyerdahl, J.A. Rau, Elemental and organic carbon particle concentrations: A long-term perspective, Science of The Total Environment, Volume 36, 1984, Pages 17-25, ISSN 0048-9697, (
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:69545
Deposited By: Ruth Sustaita
Deposited On:27 Mar 2018 20:40
Last Modified:11 Nov 2021 04:16

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