| Title: | How a winding-down oil refinery park impacts air quality nearby? |
| Author(s): | Hsu CY; Chang YT; Lin CJ; |
| Address: | "Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist, New Taipei City 24301, Taiwan; Center for Environmental Sustainability and Human Health, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist, New Taipei City 24301, Taiwan. Electronic address: gracecyhsu@mail.mcut.edu.tw. Department of Safety, Health and Environmental Engineering, Ming Chi University of Technology, 84 Gungjuan Rd., Taishan Dist, New Taipei City 24301, Taiwan" |
| DOI: | 10.1016/j.envint.2022.107533 |
| ISSN/ISBN: | 1873-6750 (Electronic) 0160-4120 (Linking) |
| Abstract: | "It is always difficult to compare, let alone estimate, the difference of air pollutant concentrations before and after closure of a major source because the pollutants cannot be traced or predicted after entering the ambient. Indeed, we are not aware of any studies specifically related to the air pollutants impacted by a winding-down source. In this work, we applied nine years (2010-2018) online measurement of air pollutants (including PM(10), PM(2.5), NO(2), SO(2), O(3) and VOCs) to investigate (i) the temporal behavior of air pollutants before and after closure of an oil refinery park by using pair-wise statistics and correlations between wind speed and direction, and (ii) the source impacts on O(3) concentrations using PMF coupled with multiple linear regression (MLR) analysis (PMF-MLR). Example applications are presented at two monitoring sites (A and B) close to the Kaohsiung Oil Refinery (KOR), located in the southern industrial city of Taiwan. The results show that the KOR shutdown changed air pollutant concentrations to a certain extent in these study areas. We also conclude that, instead of using propylene-equivalent and ozone formation potential (OFP) concentrations, it is better to estimate the formation of O(3) based on PMF-MLR analysis as developed in this study. The PMF analysis has identified various VOCs sources at both sites including solvent usage, petrochemical industrial sources, industrial emissions, vehicle-related sources, vegetation emissions and aged air-masses. Also, the MLR model shows that both the background sources and petrochemical industrial sources may significantly change O(3) concentrations" |
| Keywords: | *Air Pollutants/analysis *Air Pollution/analysis China Environmental Monitoring/methods Nitrogen Dioxide/analysis Oil and Gas Industry *Ozone/analysis Particulate Matter/analysis Solvents/analysis Vehicle Emissions/analysis *Volatile Organic Compounds/ana; |
| Notes: | "MedlineHsu, Chin-Yu Chang, Yu-Tzu Lin, Cheng-Ju eng Research Support, Non-U.S. Gov't Netherlands 2022/09/24 Environ Int. 2022 Nov; 169:107533. doi: 10.1016/j.envint.2022.107533. Epub 2022 Sep 17" |
