دورية أكاديمية
Relationship between atmospheric pollution and polycyclic aromatic hydrocarbons in fresh snow during heavy pollution episodes in a cold city, northeast China
| العنوان: | Relationship between atmospheric pollution and polycyclic aromatic hydrocarbons in fresh snow during heavy pollution episodes in a cold city, northeast China |
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| المؤلفون: | Li Sun, Xin Ai, Xin Yao, Qi An, Xinmiao Liu, Evgenia Yakovleva, Lijuan Zhang, Huajie Sun, Ke Zhang, Shuying Zang |
| المصدر: | Ecotoxicology and Environmental Safety, Vol 260, Iss , Pp 115091- (2023) |
| بيانات النشر: | Elsevier, 2023. |
| سنة النشر: | 2023 |
| المجموعة: | LCC:Environmental pollution LCC:Environmental sciences |
| مصطلحات موضوعية: | Polycyclic aromatic hydrocarbons (PAHs), Air pollutants, Source apportionment, Atmospheric transport, Backward trajectory, Environmental pollution, TD172-193.5, Environmental sciences, GE1-350 |
| الوصف: | Air quality index (AQI) and air pollutants during two typical pollution episodes, and polycyclic aromatic hydrocarbons (PAHs) in fresh snow after each episode in the winter 2019 across Harbin City in northeast China were investigated to explore the co-environmental behaviors. Significantly greater values of AQI and PAHs were found in the more serious atmospheric pollution episode (episode Ⅱ), demonstrating that PAHs in fresh snow is a robust indicator. PM2.5 was the primary air pollutant in both episodes based on PM2.5/PM10 ratios, which might be attributed to fine particulate converted from gas-to-particle process. PM2.5 and 4-ring PAHs significantly positive correlated, indicating that airborne particulate PAHs were co-emitted and co-transported with atmospheric fine particles released from coal combustion and vehicular emission under low temperature and high relative humidity. 3- and 4- rings PAHs were dominant in episode Ⅱ, while 5- and 6- rings PAHs were found the lowest in both episodes. These characteristics reflected that long-range transportation of coal and biomass burning were from the surrounding areas, while vehicle exhausts were mainly from local emissions. Except for the impact of local pollution source emissions, the regional transport could make a greater contribution in a more serious pollution event. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 0147-6513 |
| العلاقة: | http://www.sciencedirect.com/science/article/pii/S014765132300595XTest; https://doaj.org/toc/0147-6513Test |
| DOI: | 10.1016/j.ecoenv.2023.115091 |
| الوصول الحر: | https://doaj.org/article/e9938b74a9e545fbb8c5d3e1962c949eTest |
| رقم الانضمام: | edsdoj.9938b74a9e545fbb8c5d3e1962c949e |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 01476513 |
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| DOI: | 10.1016/j.ecoenv.2023.115091 |