Abstract
Aerosol composition change between dust storm and non-dust storm periods in spring is studied using the total suspended particle data measured at Gosan, a background area in Korea. The concentrations of eight inorganic ions and 12 elements were analyzed for the TSP samples collected from March 1992 to May 2006. Two-step statistical analyses were carried out for the data: F test and t test. The concentrations of anthropogenic ionic species showed increasing trend since 2003. The absolute concentrations of most anthropogenic species such as sulfate or nitrate increased (from 7.33 to 9.25 μg m-3 and from 2.04 to 4.84 μg m-3, respectively) during the dust storm period. However, the enrichment factors or normalized concentrations based on Al of most anthropogenic species decreased during dust storm period (factor of 0.1-0.5). It suggests that, in general, relative importance of anthropogenic species during dust storm would be not high.
| Original language | English |
|---|---|
| Pages (from-to) | 165-175 |
| Number of pages | 11 |
| Journal | Water, Air, and Soil Pollution |
| Volume | 204 |
| Issue number | 1-4 |
| DOIs | |
| State | Published - Nov 2009 |
Bibliographical note
Funding Information:Acknowledgments This work was supported by the Korea Science and Engineering Foundation (KOSEF) through the National Research Lab. Program (No. R0A-2006-000-10221-0) and the SRC Program (the Climate Environment System Research Center). We thank Prof. C.-H. Kang at the Cheju National University, Korea for providing the sampling data.
Keywords
- Aerosol composition
- Dust storm
- Enrichment factor
- Gosan
- Long-term trend