The levels, sources and reactivity of volatile organic compounds in a typical urban area of Northeast China
查看参考文献61篇
Ma Zhuobiao
1,2
Liu Chengtang
1,3,2
Zhang Chenglong
1,3,2
*
Liu Pengfei
1,4,2
Ye Can
1,2
Xue Chaoyang
1,2
Zhao Di
5
Sun Jichen
5
Du Yiming
6
Chai Fahe
7
Mu Yujing
1,4,2
*
文摘
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Air concentrations of volatile organic compounds (VOCs) were continually measured at a monitoring site in Shenyang from 20 August to 16 September 2017. The average concentrations of alkanes, alkenes, aromatics and carbonyls were 28.54, 6.30, 5.59 and 9.78 ppbv, respectively. Seven sources were identified by the Positive Matrix Factorization model based on the measurement data of VOCs and CO. Vehicle exhaust contributed the most (36.15%) to the total propene-equivalent concentration of the measured VOCs, followed by combustion emission (16.92%), vegetation emission and secondary formation (14.33%), solvent usage (10.59%), petrochemical industry emission (9.89%), petrol evaporation (6.28%), and liquefied petroleum gas (LPG) usage (5.84%). Vehicle exhaust, solvent usage and combustion emission were found to be the top three VOC sources for O_3 formation potential, accounting for 34.52%, 16.55% and 11.94%, respectively. The diurnal variation of the total VOCs from each source could be well explained by their emission characteristics, e.g., the two peaks of VOC concentrations from LPG usage were in line with the cooking times for breakfast and lunch. Wind rose plots of the VOCs from each source could reveal the possible distribution of the sources around the monitoring site. The O_3 pollution episodes during the measurement period were found to be coincident with the elevation of VOCs, which was mainly due to the air parcel from the southeast direction where petrochemical industry emission was found to be dominant, suggesting that the petrochemical industry emission from the southeast was probably a significant cause of O_3 pollution in Shenyang. |
来源
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Journal of Environmental Sciences
,2019,79:121-134 【核心库】
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DOI
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10.1016/j.jes.2018.11.015
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关键词
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Volatile organic compounds
;
Source apportionment
;
Photochemical ozone formation
;
Field measurement
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地址
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1.
Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085
2.
University of Chinese Academy of Sciences, Beijing, 100049
3.
Center for Excellence in Regional Atmospheric Environment, Institute of Urban Environment, Chinese Academy of Sciences, Xiamen, 361021
4.
Institute of Urban Environment, Chinese Academy of Sciences, Center for Excellence in Regional Atmospheric Environment,Chinese Academy of Sciences, Xiamen, 361021
5.
Shenyang Academy of Environmental Sciences, Shenyang, 110167
6.
Shenyang Environmental Monitoring Centre, Shenyang, 110000
7.
Chinese Research Academy of Environmental Sciences, Beijing, 100012
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语种
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英文 |
文献类型
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研究性论文 |
ISSN
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1001-0742 |
学科
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环境污染及其防治;行业污染、废物处理与综合利用 |
基金
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supported by the National Key Research and Development Program of China
;
国家自然科学基金
;
the National research program for Key issues in air pollution control
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文献收藏号
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CSCD:6442310
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