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Sulfur (32S, 33S, 34S, 36S) and oxygen (16O, 17O, 18O) isotopic ratios of primary sulfate produced from combustion processes Cover

Sulfur (32S, 33S, 34S, 36S) and oxygen (16O, 17O, 18O) isotopic ratios of primary sulfate produced from combustion processes

Open Access
|Jan 2002

Abstract

The recent discovery of an anomalous enrichment in 17O isotope in atmospheric sulfate has opened a new way to investigate the oxidation pathways of sulfur in the atmosphere. From laboratory investigations, it has been suggested that the wet oxidation of sulfur in rain droplets was responsible for the excess 17O. In order to confirm this theory, sulfur and oxygen isotope ratios of different primary sulfates produced during fossil fuel combustion have been investigated and are reported. None of these samples exhibits any anomalous oxygen or sulfur isotopic content, as compared to urban sulfate aerosols. These results, in agreement with the laboratory investigations, reinforce the idea of an aqueous origin for the oxygen-17 anomaly found in tropospheric sulfates.

Language: English
Page range: 193 - 200
Submitted on: Oct 4, 2001
Accepted on: Jan 28, 2002
Published on: Jan 1, 2002
Published by: Stockholm University Press
In partnership with: Paradigm Publishing Services

© 2002 C. C.-W. Lee, J. Savarino, H. Cachier, M. H. Thiemens, published by Stockholm University Press
This work is licensed under the Creative Commons Attribution 4.0 License.