SEM-EDX Characterisation of Tropospheric Aerosols in the Negev Desert (Israel) |
| |
| Authors: | Sophie Sobanska Cécile Coeur Willy Maenhaut Freddy Adams |
| |
| Institution: | (1) Micro and Trace Analysis Centre, University of Antwerp, Universiteitsplein 1, B-2610 Wilrijk, Belgium;(2) Institute for Nuclear Sciences, Ghent University, Proeftuinstraat 86, B-9000 Gent, Belgium |
| |
| Abstract: | Individual aerosol particles collected in the Negev desert in Israel during a summer and winter campaign in 1996–1997 were analysed by scanning electron microscopy with energy-dispersive X-ray analysis. Hierarchical cluster analysis was performed to interpret the data on the basis of particle diameter and composition. Eleven particle classes (groups) provided clues on sources and/or particle formation. The summer samples were enriched in sulphates and mineral dusts; the winter samples contained more sea salts, aged sea salts, and industrial particles. The fine size fraction below 1  m diameter was enriched in secondary particles and showed evidence of atmospheric processing. The secondary sulphate particles were mainly attributed to long-range transport. A regional conversion from calcite to calcium sulphate occurred during summer. Industrial particles originating from local pollution appeared during winter. |
| |
| Keywords: | hierarchical cluster analyses micro-characterisation of aerosol remote atmospheric particles scanning electron microscopy |
| 本文献已被 SpringerLink 等数据库收录！ |
|
