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3. Aging induced changes on NEXAFS fingerprints in individual combustion particles

Author

Zelenay, V., primary, Mooser, R., additional, Tritscher, T., additional, Křepelová, A., additional, Heringa, M. F., additional, Chirico, R., additional, Prévôt, A. S. H., additional, Weingartner, E., additional, Baltensperger, U., additional, Dommen, J., additional, Watts, B., additional, Raabe, J., additional, Huthwelker, T., additional, and Ammann, M., additional

Published
2011
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4. Aging fingerprints in combustion particles

Author

Zelenay, V., primary, Mooser, R., additional, Tritscher, T., additional, Křepelová, A., additional, Heringa, M. F., additional, Chirico, R., additional, Prévôt, A. S. H., additional, Weingartner, E., additional, Baltensperger, U., additional, Dommen, J., additional, Watts, B., additional, Raabe, J., additional, Huthwelker, T., additional, and Ammann, M., additional

Published
2011
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7. Aging fingerprints in combustion particles.

Author

Zelenay, V., Mooser, R., Tritscher, T., Křepelová, A., Heringa, M. F., Chirico, R., Prévôt, A. S. H., Weingartner, E., Baltensperger, U., Dommen, J., Watts, B., Raabe, J., Huthwelker, T., and Ammann, M.

Abstract

Soot particles can significantly influence the Earth's climate by absorbing and scattering solar radiation as well as by acting as cloud condensation nuclei. However, despite their environmental (as well as economic and political) importance, the way these properties are affected by atmospheric processing is still a subject of discussion. In this work, soot particles emitted from two different cars, a EURO 2 transporter, a EURO 3 passenger vehicle, and a wood stove were investigated on a single-particle basis. The emitted exhaust, including the particulate and the gas phase, was processed in a smog chamber with artificial solar radiation. Single particle specimens of both unprocessed and aged soot were characterized using x-ray absorption spectroscopy and scanning electron microscopy. Comparison of the spectra from the unprocessed and aged soot particles revealed changes in the carbon functional group content, such as that of carboxylic carbon, which can be ascribed to both the condensation of secondary organic compounds on the soot particles and oxidation of primary soot particles upon photochemical aging. Changes in the morphology and size of the single soot particles were also observed upon aging. Furthermore, we show that the soot particles take up water in humid environments and that their water uptake capacity increases with photochemical aging. [ABSTRACT FROM AUTHOR]

Published
2011
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8. Regards sur la musique contemporaine, 1921-1946

Author

Honegger, Arthur, 1892-1955, pr, Rouge, F., et Compagnie, ed. lit, Imprimerie Centrale de Lausanne, imp, Mooser, R.-aloys, Honegger, Arthur, 1892-1955, pr, Rouge, F., et Compagnie, ed. lit, Imprimerie Centrale de Lausanne, imp, and Mooser, R.-aloys

Published
1946

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