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| Characteristics and Sources of Elements in PM10 and PM2.5 during Spring and Winter in Tongling City |
| Received:March 14, 2019 Revised:June 25, 2019 |
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| DOI：10.7643/ issn.1672-9242.2019.06.015 |
| KeyWord:atmospheric particulate matter element AQI |
| Author | Institution |
| ZHANG Hong |
1. Anhui Institute of Environment Science, Hefei , China |
| HUANG Yong |
2. Anhui Key Lab of Atmospheric Science and Satellite Remote Sensing, Anhui Meteorology Institute, Hefei , China; 3. Shouxian National Climate Observatory, Huainan , China |
| SONG Hao-ran |
4. USTC Department of Earth and Space Science, Hefei , China |
| CHEN Ning |
1. Anhui Institute of Environment Science, Hefei , China |
| WANG Ru-wei |
4. USTC Department of Earth and Space Science, Hefei , China |
| MEI Jian-ming |
5. Tongling Environment Observatory, Tongling , China |
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| Abstract: |
| Objective To understand the characteristics and main sources of elements in particulate matters in Tongling City. Methods PM10 and PM2.5 were collected at the National Ambient Air Automatic Monitoring Station-Tongling Xinmin Sewage Treatment Plant (industrial zone) during the winter (January 25 to February 13) and spring (May 16-27) of 2014 to carry out quantitative test on the elements with XRF. During the sampling period, the air quality was mainly at level II or III in the winter, and level IV or V in the spring. There was apparent heavy pollution. Results Compared with the other elements, the concentrations of S and Si in PM2.5 and PM10 were higher, and the concentrations of P and Cu were much lower. With the different air quality index, the higher the air quality index was, the more concentrated elements were detected in a unit volume. K, Cl, Na, Cu and S were more likely to be enriched on PM2.5, while Fe, Al, Mg and Si were more likely to be enriched on PM10. The enrichment of Ca and P in the PM2.5 and PM10 were basically the same. The highest enriched element was K, followed by Mg and Fe, and the enrichment factors of K, Cl and Cu in PM10 were higher than those in PM2.5. Conclusion The dust (including ground dust and building dust) has the largest contribution to PM10, followed by mining and biomass burning, then coal combustion, copper smelting and other industrial enterprise emissions. While the largest contribution to PM2.5 was mainly brought by soil dust, construction dust, road dust and mining, followed by coal combustion, biomass burning and other industrial enterprises emissions, then copper smelting enterprise emissions. |
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