Details for Role of organic and black carbon in the chemical composition of atmospheric aerosol at European background sites

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Name:Role of organic and black carbon in the chemical composition of atmospheric aerosol at European background sites
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Krivacsy, Z., Hoffer, A., Sarvari, Zs., Temesi, D., Baltensperger, U., Nyeki, S., Weingartner, E., Kleefeld, S., Jennings, S.G., 2001. Role of organic and black carbon in the chemical composition of atmospheric ,aerosol at European background sites. Atmospheric Environment 35, 6231-6244.


Abstract


The mass concentrations of inorganic ions, water-soluble organic carbon, water-insoluble organic carbon and black carbon were determined in atmospheric aerosol collected at three European background sites: (1) the Jungfraujoch, Switzerland (high-alpine, PM2.5 aerosol); (2) K-puszta, Hungary (rural, PM1.0 aerosol); (3) Mace Head, Ireland (marine, total particulate matter). At the Jungfraujoch and K-puszta the contribution of carbonaceous compounds to the aerosol mass was higher than that of inorganic ions by 33% and 94%, respectively. At these continental sites about 60% of the organic carbon was water soluble, 55-75% of the total carbon proved to be refractory and a considerable portion of the water soluble, refractory organic matter was composed of humic-like substances. At Mace Head the mass concentration of organic matter was found to be about twice than that of nonsea-salt ions 40% of the organic carbon was water soluble and the amount of highly refractory carbon was low. Humic-like substances were not detected but instead low molecular weight carboxylic acids were responsible for about one-fifth of the water-soluble organic mass. These results imply that the influence of carbonaceous compounds on aerosol properties (e.g. hygroscopic, optical) might be significant.

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