Wei, Zhe (2025) Modeling The Impact Of Ammonia On The Formation Of Atmospheric Particles In Low Sulfur Environment In Beijing-Tianjin-Hebei, China. PhD thesis, Perpustakaan Hamzah Sendut.
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Abstract
Haze pollution is a significant environmental challenge in china, with recent efforts focusing on reducing particulate matter concentrations, especially pm2.5. Reducing primary pollutants is recognized as a crucial approach to lower pm2.5 and its secondary compositions, especially now that ammonia (nh3) reduction is considered more efficient. This work applied the weather research and forecasting model with chemistry model (wrf-chem) combined with the brute force method (bfm) for sensitivity analysis to quantify the contribution of pollutant reduction to pm2.5 and its secondary compositions in january 2016, in beijing-tianjin-hebei region. The second objective of this study is to analyze the characteristics of ph pollution in handan and its influence on the formation of secondary components of pm2.5. The third objective is to refine the emission reduction strategies in the beijing-tianjin-hebei region based on how ph variations affect the formation of secondary compositions. The results showed that the 30%_so2_40%_nh3_40%_nox contributed the largest contribution (6.8%) to pm2.5, followed by 3.8% of 30%_so2_60%_nh3_60%_nox and 3.4% of 30%_so2_40%_nh3. A synergistic control measure for nh3, nox, and so2 would not only reduce pm2.5 concentrations, but also controlled the formation of secondary inorganic aerosol.
| Item Type: | Thesis (PhD) |
|---|---|
| Subjects: | Q Science > QC Physics > QC1 Physics (General) |
| Divisions: | Pusat Pengajian Sains Fizik (School of Physics) > Thesis |
| Depositing User: | Mr Hasmizar Mansor |
| Date Deposited: | 18 May 2026 01:40 |
| Last Modified: | 18 May 2026 01:40 |
| URI: | http://eprints.usm.my/id/eprint/64223 |
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