A comprehensive investigation on volatile organic compounds (VOCs) in 2018 in Beijing, China: Characteristics, sources and behaviours in response to O3 formation

Li, Chenlu; Liu, Yafei; Cheng, Bingfen; Zhang, Yuepeng; Liu, Xingang; Yu, Qian; An, Junling; Kong, Liuwei; Zhang, Yingying; Zhang, Chen; Tan, Qinwen; Feng, Miao

doi:10.1016/j.scitotenv.2021.150247

Cited by 20 publications

(15 citation statements)

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“…As a secondary pollutant, the formation of surface ozone is mainly related to its precursors (NO x and VOCs). The source analysis of atmospheric VOCs in some areas shows that the contribution rate of motor vehicle sources is high, which is the main source of urban atmospheric VOCs [50,51]. The ozone pollution occurring in the urban areas is transported to the suburbs with certain meteorological conditions [52].…”

Section: Spatial Analysismentioning

confidence: 99%

Temporal and Spatial Analysis of PM2.5 and O3 Pollution Characteristics and Transmission in Central Liaoning Urban Agglomeration from 2015 to 2020

Zhong

et al. 2022

Sustainability

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The central Liaoning urban agglomeration is an important heavy industry development base in China, and also an important part of the economy in northeast China. The atmospheric environmental problems caused by the development of heavy industry are particularly prominent. Trajectory clustering, potential source contribution (PSCF), and concentration weighted trajectory (CWT) analysis are used to discuss the temporal and spatial pollution characteristics of PM2.5 and ozone concentrations and reveal the regional atmospheric transmission pattern in central Liaoning urban agglomeration from 2015 to 2020. The results show that: (1) PM2.5 in the central Liaoning urban agglomeration showed a decreasing trend from 2015 to 2020. The concentration of PM2.5 is the lowest in 2018. Except for Benxi (34.7 µg/m3), the concentrations of PM2.5 in other cities do not meet the standard in 2020. The ozone concentration in Anshan, Liaoyang, and Shenyang reached the peaks in 2017, which are 68.76 µg/m3, 66.27 µg/m3, and 63.46 µg/m3 respectively. PM2.5 pollution is the highest in winter and the lowest in summer. The daily variation distribution of PM2.5 concentration showed a bimodal pattern. Ozone pollution is the most serious in summer, with the concentration of ozone reaching 131.14 µg/m3 in Shenyang. Fushun is affected by Shenyang intercity pollution, and the ozone concentration is high. (2) In terms of spatial distribution, the high values of PM2.5 are concentrated in monitoring stations in urban areas. On the contrary, the concentration of ozone in suburban stations is higher. The high concentration of ozone in the northeast of Anshan, Liaoyang, Shenyang to Tieling, and Fushun extended in a band distribution. (3) Through cluster analysis, it is found that PM2.5 and ozone in Shenyang are mainly affected by short-distance transport airflow. In winter, the weighted PSCF high-value area of PM2.5 presents as a potential contribution source zone of the northeast trend with wide coverage, in which the contribution value of the weighted CWT in the middle of Heilongjiang is the highest. The main potential source areas of ozone mass concentration in spring and summer are coastal cities and the Bohai Sea and the Yellow Sea. We conclude that the regional transmission of pollutants is an important factor of pollution, so we should pay attention to the supply of industrial sources and marine sources of marine pollution in the surrounding areas of cities, and strengthen the joint prevention and control of air pollution among regions. The research results of this article provide a useful reference for the central Liaoning urban agglomeration to improve air quality.

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Section: Spatial Analysismentioning

confidence: 99%

Temporal and Spatial Analysis of PM2.5 and O3 Pollution Characteristics and Transmission in Central Liaoning Urban Agglomeration from 2015 to 2020

Zhong

et al. 2022

Sustainability

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“…3 shows PMF results for major chinese cities from recent studies. 7,20,21,[70][71][72][73][74][75][76] Li et al found that solvent usage (42%) accounted for the highest proportion of China's VOCs emission inventory. 77 However, in the PMF results of major cities such as Beijing (4.3%), 70 Hangzhou (14.3%), 74 Wuhan (10.9%), 20 Chengdu (9.3%), 75 and Xi'an (10.6%), 21 the proportion of solvent usage sources was relatively low.…”

Section: Estimates Of Vocs Emission Source Structuresmentioning

confidence: 99%

“…7,20,21,[70][71][72][73][74][75][76] Li et al found that solvent usage (42%) accounted for the highest proportion of China's VOCs emission inventory. 77 However, in the PMF results of major cities such as Beijing (4.3%), 70 Hangzhou (14.3%), 74 Wuhan (10.9%), 20 Chengdu (9.3%), 75 and Xi'an (10.6%), 21 the proportion of solvent usage sources was relatively low. Li et al found that the VOCs emission contributions of fuel combustion differed between PMF results (19.3%) and the inventory (6.6%).…”

Section: Estimates Of Vocs Emission Source Structuresmentioning

confidence: 99%

“…a 22, 81 and 82.b 17, 28, 68, 72, 76 and 83–89.c 7.d 2, 4, 14, 16, 18, 19, 21, 29–31, 35, 48, 49, 58, 70, 73, 75 and 90–109.e 71 and 109–111.f 1, 14, 15, 22, 30, 31, 35, 37, 65, 93, 95, 107, 112–115 and 115–118.g 35.h 17, 37, 74, 116 and 119–121.i 122 and 123.j 13, 20, 23, 32–34, 51, 57, 94, 123–127, 127–129 and 129–134.k 123.l 26 and 135–137.m 23, 25, 26, 119…”

Section: Atmospheric Vocs Observations In Chinamentioning

confidence: 99%

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Research progresses on VOCs emission investigationsviasurface and satellite observations in China

Guo

et al. 2022

Environ. Sci.: Processes Impacts

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“…The 36 h back trajectories arriving at 100 and 500 m above the model ground level respectively in winter and the other seasons, were computed at 7:00, 8:00, 14:00, and 15:00. The tracing time of 36 h rested on other studies (Li et al, 2022a;Li et al, 2022b;Song et al, 2018;Xiong and Du, 2020). 500 m is a common height for the back-trajectory analysis of VOC air masses due to the minimized surface frictional effects and the winds in the lower boundary layer under the circumstance (Liu et al, 2021c).…”

Section: Hysplit Transport Modelmentioning

confidence: 99%

VOCs species controlling O3 formation in ambient air and their sources in Kaifeng, China

Chen

Shi

Ren

et al. 2022

Preprint

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The concentration of ozone has been in a rising crescendo in the last decade while the fine particles (PM2.5) is gradually decreasing but still at a high level in central China. Volatile organic compounds (VOCs) are the vital precursors of ozone and PM2.5. A total of 101 VOC species were measured in four seasons at five sites from 2019 to 2021 in Kaifeng. VOC sources and geographic origin of sources were identified by the positive matrix factorization (PMF) model and the HYbrid Single-Particle Lagrangian Integrated Trajectory transport model. The source-specific OH loss rates (LOH) and ozone formation potential (OFP) were calculated to estimate the effects of each VOC source. The average mixing ratios of total VOCs (TVOC) were 43.15 parts per billion (ppb), of which the alkanes, alkenes, aromatics, halocarbons, and oxygenated VOCs respectively accounted for 49%, 12%, 11%, 14%, and 14%. Although the mixing ratios of alkenes were comparatively low, they played a dominant role in the LOH and OFP, especially ethene (0.55 s− 1, 7%; 27.11 µg/m3, 10%) and 1,3-butadiene (0.74 s− 1, 10%; 12.52 µg/m3, 5%). The vehicle-related source which emitted considerable alkenes ranked as the foremost contributing factor (21%). Biomass burning was probably influenced by other cities in the western and southern Henan and other provinces, Shandong and Hebei.

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A comprehensive investigation on volatile organic compounds (VOCs) in 2018 in Beijing, China: Characteristics, sources and behaviours in response to O3 formation

Cited by 20 publications

References 64 publications

Temporal and Spatial Analysis of PM2.5 and O3 Pollution Characteristics and Transmission in Central Liaoning Urban Agglomeration from 2015 to 2020

Temporal and Spatial Analysis of PM2.5 and O3 Pollution Characteristics and Transmission in Central Liaoning Urban Agglomeration from 2015 to 2020

Research progresses on VOCs emission investigationsviasurface and satellite observations in China

VOCs species controlling O3 formation in ambient air and their sources in Kaifeng, China

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