Sulfates as pollution particulates: catalytic formation on carbon (soot) particles

Journal Article · Fri Oct 18 04:00:00 UTC 1974 · Science; (United States)

DOI:https://doi.org/10.1126/science.186.4160.259· OSTI ID:6461918

Novakov, T; Chang, S G; Harker, A B

Experimental evidence (obtained by electron spectroscopy for chemical analysis) is presented which shows that finely divided carbon (soot) particles may play a major role in the catalytic oxidation of sulfur dioxide to sulfate in polluted atmospheres. The results obtained with sulfates produced in the laboratory by the oxidation of sulfur dioxide on graphite particles and combustion-produced soot particles are compared with the properties and behavior of ambient sulfates. The proposed sulfur dioxide oxidation mechanism is qualitatively consistent with field observations. 2 figures.

• Research Organization: Univ. of California, Berkeley
• OSTI ID: 6461918
• Journal Information: Science; (United States), Journal Name: Science; (United States) Vol. 186; ISSN SCIEA
• Country of Publication: United States
• Language: English

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FLUIDS
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