Exploring the characteristics and sources of carbonaceous aerosols in the agro-pastoral transitional zone of Northern China

Hao, Yufang; Meng, Xiangpeng; Yu, Xuepu; Lei, Mingli; Li, Wenjun; Yang, Wei; Shi, Fangtian; Xie, Shaodong

doi:10.1016/j.envpol.2019.03.073

Cited by 7 publications

(2 citation statements)

References 61 publications

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“…Previous studies have confirmed that EC and OC are derived from the primary aerosol from incomplete biomass combustion, road transport, shipping, industrial production, and the secondary organic matter generated by chemical reactions, respectively [4][5][6][7]. Quantifying the concentration level, clarifying spatiotemporal characteristics, identifying emission sources, and exploring variation combined with the external environment (i.e., meteorology and topography) are necessary to understand carbonaceous aerosols [8][9][10]. Hoverer, the different terrain, population density, socioeconomic status, and industrial distribution lead to a complex mixture of various aerosol types [11,12] which increases the difficulty of studying source analysis and transformation mechanism of carbonaceous aerosols.…”

Section: Introductionmentioning

confidence: 98%

Temporal Variation and Source Analysis of Carbonaceous Aerosol in Industrial Cities of Northeast China during the Spring Festival: The Case of Changchun

Zhang

Bao

et al. 2020

Atmosphere

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Carbonaceous aerosol, one of the major components of atmospheric aerosols, significantly affects haze episodes, climate change, and human health. Northeastern China suffers severe air pollution, especially in some periods (e.g., the Spring Festival). However, studies on carbonaceous aerosols in typical northeast industrial cities (i.e., Changchun) are rare, limiting further comprehension of the atmospheric haze formation. In this study, we monitored the concentrations of carbonaceous aerosols (i.e., OC and EC) in Changchun during the Lunar New Year of 2018 (i.e., from Lunar 20 December to Lunar 20 January), and analyzed the temporal variation and source contributions via the HYbrid-Single Particle Lagrangian Integrated Trajectory (HYSPLIT) model with the potential source contribution factor weights (PSCF) method. The daily concentrations of OC and EC were 9.00 ± 2.81 and 1.57 ± 0.46 µg m−3, respectively, and were significantly lower at nighttime than at the day during the Spring Festival. The concentrations during the major period (i.e., OC: 8.13 ± 2.93 µg m−3; EC: 1.47 ± 0.47 µg m−3 in festival days), including the Lunar Little New Year; the Lunar New Year’s Eve; New Year’s Day; Lunar 5 January, and the Spring Lantern Festival, were mainly from the northwestward with the wind speed of 4–6 m/s being lower than that of normal period (OC: 9.87 ± 2.46 µg m−3; EC: 1.67 ± 0.44 µg m−3) from the southeastward with a wind speed of 6–7 m/s. The direction of the airflow trajectory was mainly in local, northwestward, and northward, carrying particulate matter and gaseous pollutants. In major period, the daily concentration of atmospheric pollutants presented a bimodal trend, with peaks appearing regularly from 11:00 a.m. to 12:00 p.m. and 5:00 p.m. 10:00 p.m., which might be related to traffic, cooking, and firecrackers. The OC/EC was greater than 2 during the whole period, indicating the generation of secondary organic aerosols (i.e., SOC). This study was essential to understand the formation mechanisms of severe pollution episodes and develop control measures for the industrial cities of Northeast China during the Spring Festival.

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Section: Introductionmentioning

confidence: 98%

Temporal Variation and Source Analysis of Carbonaceous Aerosol in Industrial Cities of Northeast China during the Spring Festival: The Case of Changchun

Zhang

Bao

et al. 2020

Atmosphere

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“…(Ding et al, 2016;Huang et al, 2014;Mauderly and Chow, 2008). Carbonaceous aerosols are mainly divided into two groups: organic carbon (OC) and elemental carbon (EC) (Chow and Watson, 2002;Hao et al, 2019). The list of OC contains many harmful substances, such as polycyclic aromatic hydrocarbons, organic acids, n-alkanes, heterocyclic compounds, carboxyl compounds (aldehydes, ketones), some of which have strong carcinogenicity and considerably impact human health (Mauderly and Chow, 2008;Offenberg and Baker, 2002).…”

Section: Introductionmentioning

confidence: 99%

Simultaneous Measurements of Carbonaceous Aerosol in Three Major Cities in the Beijing-Tianjin-Hebei Region, China

Jiang

Hou

Yan

et al. 2022

Aerosol Air Qual. Res.

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Simultaneous observations of carbonaceous aerosols in multiple cities are of great significance for a comprehensive understanding of the level of carbonaceous aerosol pollution in the Beijing-Tianjin-Hebei (BTH) region. In this study, PM 2.5 samples were collected simultaneously in Beijing (BJ), Tianjin (TJ), and Shijiazhuang (SJZ) during the 2017-2018 heating season, and the contents of organic carbon (OC) and elemental carbon (EC) in the samples were measured. The mean mass concentrations were 10.15-46.23 µg m -3 for OC, and 2.13-10.42 µg m -3 for EC in three cities. SJZ had more serious carbonaceous aerosols pollution compared with BJ and TJ. The OC and EC levels in three cities, especially in Beijing, were significantly lower than those reported in previous studies, implying the effectivity of strict air pollution control measures in 2017. Based on the OC/EC minimum ratio method, the mass concentration of secondary organic carbon (SOC) was estimated, and SOC pollution in BJ was relatively light. Analysis of eight carbonaceous components showed that the gasoline vehicle exhaust sources made high contributions to the levels of carbonaceous aerosols in all three cities. Compared with SJZ, the carbonaceous aerosols in BJ and TJ were more affected by road dust pollution. Analysis of backward trajectory indicated that the carbonaceous aerosols in the three cities were affected by pollution transport from the BTH region and surrounding areas, in addition to local sources. In contrast to the other two cities, OC and EC in SJZ were greatly affected by short-distance air mass transport from Hebei Province.

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Characteristics and sources of carbonaceous aerosols in a semi-arid city: Quantifying anthropogenic and meteorological impacts

Liu,

Zhou,

Chun

et al. 2023

Chemosphere

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Exploring the characteristics and sources of carbonaceous aerosols in the agro-pastoral transitional zone of Northern China

Cited by 7 publications

References 61 publications

Temporal Variation and Source Analysis of Carbonaceous Aerosol in Industrial Cities of Northeast China during the Spring Festival: The Case of Changchun

Temporal Variation and Source Analysis of Carbonaceous Aerosol in Industrial Cities of Northeast China during the Spring Festival: The Case of Changchun

Simultaneous Measurements of Carbonaceous Aerosol in Three Major Cities in the Beijing-Tianjin-Hebei Region, China

Characteristics and sources of carbonaceous aerosols in a semi-arid city: Quantifying anthropogenic and meteorological impacts

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