Characterization of Ambient Particulate Matters in an Industry-Intensive Area in Central Taiwan
| Autor: | Ming-Hsun Lin, Hsing-Wang Li, Yung-Chang Lin, Chia-Hsiang Lai, Kang-Shin Chen, Chia-Hung Chen, Yen-Ping Peng, Ting-Yu Chen, Yi-Ching Lin |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Atmospheric Science
food.ingredient 010504 meteorology & atmospheric sciences PMs 010501 environmental sciences Environmental Science (miscellaneous) 01 natural sciences food Meteorology. Climatology size distribution Mass concentration (chemistry) chemical composition Chemical composition 0105 earth and related environmental sciences Pollutant PCA business.industry Sea salt Particulates Steelmaking Environmental chemistry Principal component analysis Particle Environmental science QC851-999 business |
| Zdroj: | Atmosphere, Vol 12, Iss 926, p 926 (2021) Atmosphere Volume 12 Issue 7 |
| ISSN: | 2073-4433 |
| Popis: | Atmospheric particulate matters (PMs) were measured in an industry-intensive region in central Taiwan in order to investigate the characteristics and possible sources of PMs. The samplings were simultaneously conducted using a 10- and 3-stage Micro Orifice Uniform Deposit Impactor (MOUDI) from 2017 to 2018. In this study, the characteristics of PMs in this region were evaluated by measuring the mass concentration of PMs and analyzing water-soluble ions and metallic elements, as well as dioxins. Additionally, principal component analysis (PCA) was used to identify the potential sources of PMs. The results showed that the mean concentration of coarse (> 1.8 μm), fine (0.1–1.8 μm), and ultrafine (< 0.1 μm) particles were 13.60, 14.38, and 3.44 μg/m3, respectively. In the industry-intensive region, the size distribution of ambient particles showed a bi-modal distribution with a high concentration of coarse particles in the spring and summer, while fine particles were dominant in the autumn and winter. The most abundant water-soluble ions of PMs were NO3−, Cl−, and SO42−, while the majority of metallic elements were Na, Fe, Ca, Al, and Mg in different particle sizes. The results of Pearson’s correlation analysis for metals indicated that the particles in the collected air samples were related to the iron and steelmaking industries, coal burning, vehicle exhausts, and high-tech industries. The dioxin concentration ranged from 0.0006 to 0.0017 pg I-TEQ/Nm3. Principal component analysis (PCA) revealed that the contribution to PMs was associated with sea salt, secondary pollutants, and industrial process. |
| Databáze: | OpenAIRE |
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