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Krivacsy, Z,Hoffer, A,Sarvari, Z,Temesi, D,Baltensperger, U,Nyeki, S,Weingartner, E,Kleefeld, S,Jennings, SG
2001
December
Atmospheric Environment
Role of organic and black carbon in the chemical composition of atmospheric aerosol at European background sites
Published
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Optional Fields
background atmospheric aerosol organic carbon black carbon water solubility thermal behaviour carboxylic acids humic-like substances HUMIC-LIKE SUBSTANCES AIRBORNE PARTICULATE MATTER ELEMENTAL CARBON CAPILLARY-ELECTROPHORESIS PACIFIC-OCEAN SOURCE APPORTIONMENT SOUTHERN CALIFORNIA DICARBOXYLIC-ACIDS SIZE DISTRIBUTIONS PM(10) AEROSOL
35
6231
6244
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: (i) the Jungfraujoch, Switzerland (high-alpine, PM2.5 aerosol); (ii) K-puszta, Hungary (rural, PM1.0 aerosol); (iii) 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. (C) 2001 Elsevier Science Ltd. All rights reserved.
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