Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China
Abstract Volatile organic compounds (VOCs) are important precursors in the formation of ground-level ozone. In this study, the hourly mixing ratios of 61 ambient VOC species were monitored from 2018 till 2019 in 10 cities in the Beijing-Tianjin-Hebei (BTH) area of China, and the VOC distributions, s...
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.2019.11.0595 |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1825197476077895680 |
|---|---|
| author | Yanan Guan Yihao Zhang Yisen Zhang Xiaoli Wang Jing Han Wenbo Song Li’an Hou Erhong Duan |
| author_facet | Yanan Guan Yihao Zhang Yisen Zhang Xiaoli Wang Jing Han Wenbo Song Li’an Hou Erhong Duan |
| author_sort | Yanan Guan |
| collection | DOAJ |
| description | Abstract Volatile organic compounds (VOCs) are important precursors in the formation of ground-level ozone. In this study, the hourly mixing ratios of 61 ambient VOC species were monitored from 2018 till 2019 in 10 cities in the Beijing-Tianjin-Hebei (BTH) area of China, and the VOC distributions, speciation and photochemistry were also examined. The highest mixing ratios were found in the south, viz., Langfang (LF), Baoding (BD), Handan (HD) and Shijiazhuang (SJZ), and the lowest ones, in the north, viz., Chengde (CD) and Zhangjiakou (ZJK). In all of the cities, alkanes were the most abundant VOC component (50%), whereas ethane and propane were the most concentrated species. The mixing ratios of the VOCs exhibited a daily double peak as a result of the varying intensity of the photochemical reactions and the formation of the inversion layer. Additionally, the chemical reactivity of the VOCs was evaluated by calculating the loss rate of OH (LOH) for each species. Our results indicated that the alkenes and aromatics possessed higher LOH values as well as higher ozone formation potential (OFP) and secondary organic aerosol formation potential (SOAp) values than the alkanes. Based on the diagnostic ratios of propane/n-butane, propane/i-butane, cis-2-butane/trans-2-butane, toluene/benzene and xylene/ethylbenzene, motor vehicle emissions contributed significantly to the ambient VOCs in the area. |
| format | Article |
| id | doaj-art-00e4166c91ca4793a5c9c89b78e6c814 |
| 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-00e4166c91ca4793a5c9c89b78e6c8142025-02-09T12:19:28ZengSpringerAerosol and Air Quality Research1680-85842071-14092020-05-012091886189710.4209/aaqr.2019.11.0595Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, ChinaYanan Guan0Yihao Zhang1Yisen Zhang2Xiaoli Wang3Jing Han4Wenbo Song5Li’an Hou6Erhong Duan7School of Environmental Science and Engineering, Hebei University of Science and TechnologySchool of Environmental Science and Engineering, Hebei University of Science and TechnologySchool of Environmental Science and Engineering, Hebei University of Science and TechnologyHebei Province Environmental Emergency and Heavy Pollution Weather Forewarning CenterSchool of Environmental Science and Engineering, Hebei University of Science and TechnologyHebei Province Environmental Emergency and Heavy Pollution Weather Forewarning CenterLogistics Science and Technology Research Institute of Rocket ArmySchool of Environmental Science and Engineering, Hebei University of Science and TechnologyAbstract Volatile organic compounds (VOCs) are important precursors in the formation of ground-level ozone. In this study, the hourly mixing ratios of 61 ambient VOC species were monitored from 2018 till 2019 in 10 cities in the Beijing-Tianjin-Hebei (BTH) area of China, and the VOC distributions, speciation and photochemistry were also examined. The highest mixing ratios were found in the south, viz., Langfang (LF), Baoding (BD), Handan (HD) and Shijiazhuang (SJZ), and the lowest ones, in the north, viz., Chengde (CD) and Zhangjiakou (ZJK). In all of the cities, alkanes were the most abundant VOC component (50%), whereas ethane and propane were the most concentrated species. The mixing ratios of the VOCs exhibited a daily double peak as a result of the varying intensity of the photochemical reactions and the formation of the inversion layer. Additionally, the chemical reactivity of the VOCs was evaluated by calculating the loss rate of OH (LOH) for each species. Our results indicated that the alkenes and aromatics possessed higher LOH values as well as higher ozone formation potential (OFP) and secondary organic aerosol formation potential (SOAp) values than the alkanes. Based on the diagnostic ratios of propane/n-butane, propane/i-butane, cis-2-butane/trans-2-butane, toluene/benzene and xylene/ethylbenzene, motor vehicle emissions contributed significantly to the ambient VOCs in the area.https://doi.org/10.4209/aaqr.2019.11.0595VOCsOzone formation potentialSecondary organic aerosols formationChina |
| spellingShingle | Yanan Guan Yihao Zhang Yisen Zhang Xiaoli Wang Jing Han Wenbo Song Li’an Hou Erhong Duan Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China Aerosol and Air Quality Research VOCs Ozone formation potential Secondary organic aerosols formation China |
| title | Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China |
| title_full | Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China |
| title_fullStr | Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China |
| title_full_unstemmed | Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China |
| title_short | Pollution Characteristics and Key Reactive Species of Volatile Organic Compounds in Beijing-Tianjin-Hebei Area, China |
| title_sort | pollution characteristics and key reactive species of volatile organic compounds in beijing tianjin hebei area china |
| topic | VOCs Ozone formation potential Secondary organic aerosols formation China |
| url | https://doi.org/10.4209/aaqr.2019.11.0595 |
| work_keys_str_mv | AT yananguan pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina AT yihaozhang pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina AT yisenzhang pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina AT xiaoliwang pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina AT jinghan pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina AT wenbosong pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina AT lianhou pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina AT erhongduan pollutioncharacteristicsandkeyreactivespeciesofvolatileorganiccompoundsinbeijingtianjinhebeiareachina |