Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China
Abstract This study aimed to determine the chemical composition, sources and contributing factors of airborne PM2.5 (particulate matter with an aerodynamic diameter ≤ 2.5 µm) during a haze episode in Zibo, a heavy industrial city in China. Samples of PM2 5 were collected 8-27 January 2018 and analyz...
Saved in:
| Main Authors: | , , , , , , , |
|---|---|
| Format: | Article |
| Language: | English |
| Published: |
Springer
2020-05-01
|
| Series: | Aerosol and Air Quality Research |
| Subjects: | |
| Online Access: | https://doi.org/10.4209/aaqr.2019.11.0591 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1825197481332310016 |
|---|---|
| author | Menghui Li Liping Wu Xiangyan Zhang Xinwu Wang Wenyu Bai Jing Ming Chunmei Geng Wen Yang |
| author_facet | Menghui Li Liping Wu Xiangyan Zhang Xinwu Wang Wenyu Bai Jing Ming Chunmei Geng Wen Yang |
| author_sort | Menghui Li |
| collection | DOAJ |
| description | Abstract This study aimed to determine the chemical composition, sources and contributing factors of airborne PM2.5 (particulate matter with an aerodynamic diameter ≤ 2.5 µm) during a haze episode in Zibo, a heavy industrial city in China. Samples of PM2 5 were collected 8-27 January 2018 and analyzed for water-soluble inorganic ions (WSIs), trace elements (TEs), organic carbon (OC) and elemental carbon (EC). The PM2.5 concentration was 76.78% higher during the haze (mean ± standard deviation [SD] = 211 ± 39 µg m−3) than before it (49 ± 38 µg m−3), and the dominant ions were NO3-, SO42- and NH4+. Additionally, an elevated TE concentration was observed during the episode (exceeding the pre- and post-haze values by 54.70% and 31.98%, respectively), with crustal elements (K, Al, Ca, Si, Na, Fe and Mg), the most abundant elemental components, accounting for 88.64%. Carbonaceous species (OC and EC) contributed 15.45% of the PM2.5 on haze days and slightly more on non-haze days. The NO3/SO42- and OC/EC ratios indicated that coal combustion and motor vehicle emission were the primary sources of pollution, and back-trajectory analysis revealed that the air masses over Zibo on haze days mainly originated in adjacent areas in Shandong Province and the Beijing-Tianjin-Hebei region (BTH). The haze episode was caused by a combination of unfavorable meteorological conditions, secondary formation, the accumulation of local pollutants, and peripheral transmission. |
| format | Article |
| id | doaj-art-0d2515a081324fadaf8434de0d4992a3 |
| institution | Kabale University |
| issn | 1680-8584 2071-1409 |
| language | English |
| publishDate | 2020-05-01 |
| publisher | Springer |
| record_format | Article |
| series | Aerosol and Air Quality Research |
| spelling | doaj-art-0d2515a081324fadaf8434de0d4992a32025-02-09T12:19:31ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-05-012091950196010.4209/aaqr.2019.11.0591Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North ChinaMenghui Li0Liping Wu1Xiangyan Zhang2Xinwu Wang3Wenyu Bai4Jing Ming5Chunmei Geng6Wen Yang7State Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesSchool of Environmental and Municipal Engineering, Tianjin Chengjian UniversityZibo Eco-Environmental Monitoring CenterZibo Eco-Environmental Monitoring CenterState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesBeacon Science & ConsultingState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesState Key Laboratory of Environmental Criteria and Risk Assessment, Chinese Research Academy of Environmental SciencesAbstract This study aimed to determine the chemical composition, sources and contributing factors of airborne PM2.5 (particulate matter with an aerodynamic diameter ≤ 2.5 µm) during a haze episode in Zibo, a heavy industrial city in China. Samples of PM2 5 were collected 8-27 January 2018 and analyzed for water-soluble inorganic ions (WSIs), trace elements (TEs), organic carbon (OC) and elemental carbon (EC). The PM2.5 concentration was 76.78% higher during the haze (mean ± standard deviation [SD] = 211 ± 39 µg m−3) than before it (49 ± 38 µg m−3), and the dominant ions were NO3-, SO42- and NH4+. Additionally, an elevated TE concentration was observed during the episode (exceeding the pre- and post-haze values by 54.70% and 31.98%, respectively), with crustal elements (K, Al, Ca, Si, Na, Fe and Mg), the most abundant elemental components, accounting for 88.64%. Carbonaceous species (OC and EC) contributed 15.45% of the PM2.5 on haze days and slightly more on non-haze days. The NO3/SO42- and OC/EC ratios indicated that coal combustion and motor vehicle emission were the primary sources of pollution, and back-trajectory analysis revealed that the air masses over Zibo on haze days mainly originated in adjacent areas in Shandong Province and the Beijing-Tianjin-Hebei region (BTH). The haze episode was caused by a combination of unfavorable meteorological conditions, secondary formation, the accumulation of local pollutants, and peripheral transmission.https://doi.org/10.4209/aaqr.2019.11.0591Chemical compositionPM2.5Haze episodeHeavy industrial city |
| spellingShingle | Menghui Li Liping Wu Xiangyan Zhang Xinwu Wang Wenyu Bai Jing Ming Chunmei Geng Wen Yang Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China Aerosol and Air Quality Research Chemical composition PM2.5 Haze episode Heavy industrial city |
| title | Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China |
| title_full | Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China |
| title_fullStr | Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China |
| title_full_unstemmed | Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China |
| title_short | Comparison of PM2.5 Chemical Compositions during Haze and Non-haze Days in a Heavy Industrial City in North China |
| title_sort | comparison of pm2 5 chemical compositions during haze and non haze days in a heavy industrial city in north china |
| topic | Chemical composition PM2.5 Haze episode Heavy industrial city |
| url | https://doi.org/10.4209/aaqr.2019.11.0591 |
| work_keys_str_mv | AT menghuili comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina AT lipingwu comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina AT xiangyanzhang comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina AT xinwuwang comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina AT wenyubai comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina AT jingming comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina AT chunmeigeng comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina AT wenyang comparisonofpm25chemicalcompositionsduringhazeandnonhazedaysinaheavyindustrialcityinnorthchina |