期刊
ATMOSPHERIC POLLUTION RESEARCH
卷 2, 期 2, 页码 182-189出版社
TURKISH NATL COMMITTEE AIR POLLUTION RES & CONTROL-TUNCAP
DOI: 10.5094/APR.2011.023
关键词
Fine particles; Ion beam analysis; Positive matrix factorisation; Desert dust
资金
- International Atomic Energy Agency (IAEA) RCA Program
Ion beam analysis techniques have been used to characterise fine particle (PM2.5) pollution in the Sydney Basin between 1 July 1998 and 31 December 2009. Nearly 1 200 filters were obtained and analysed for more than 21 different chemical species from hydrogen to lead. Positive matrix factorisation was then applied to this significant database to determine 7 different source fingerprints and their contributions to the total PM2.5 mass. Most of these sources originated in the Sydney Basin, however there were significant windblown soil sources that originated not just from desert regions in central Australia but also from large agricultural regions around 500 km south west of the Basin. This long range transport of fine dust was tracked using hourly back trajectories for every sampling day during the study period and showed that 33% of extreme dust events were probably originating from agricultural regions and not the central desert regions of Australia as first thought. (C) Author(s) 2011. This work is distributed under the Creative Commons Attribution 3.0 License.
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