气候变化领域集成服务门户(CCPortal): Pollution Characteristics and Source Apportionment of Black Carbon Aerosols during Spring in Beijing

CCPortal

DOI	10.3390/toxics12030202
	Pollution Characteristics and Source Apportionment of Black Carbon Aerosols during Spring in Beijing
	Lei, Wenkai; Li, Xingru; Yin, Zhongyi; Zhang, Lan; Zhao, Wenji
发表日期	2024
EISSN	2305-6304
起始页码	12
结束页码	3
卷号	12 期号:3
英文摘要	Black carbon (BC) aerosols are important for absorbing aerosols, affecting global climate change and regional air quality, and potentially harming human health. From March to May 2023, we investigated black carbon aerosol levels and air pollution in Beijing. Employing methods such as linear regression, Potential Source Contribution Function (PSCF) and Concentration-Weighted Trajectory (CWT), we analyzed the characteristics and sources of black carbon aerosols in the region. Results indicate that the light absorption coefficients of BC and BrC decrease with increasing wavelength, with BrC accounting for less than 40% at 370 nm. Daily variations in BC and PM2.5 concentrations exhibit similar trends, peaking in March, and BC displays a distinct bimodal hourly concentration structure during this period. Aethalometer model results suggest that liquid fuel combustion contributes significantly to black carbon (1.08 +/- 0.71 mu g center dot m-3), surpassing the contribution from solid fuel combustion (0.31 +/- 0.2 mu g center dot m-3). Furthermore, the significant positive correlation between BC and CO suggests that BC emissions in Beijing predominantly result from liquid fuel combustion. Potential source area analysis indicates that air masses of spring in Beijing mainly originate from the northwest (40.93%), while potential source areas for BC are predominantly distributed in the Beijing-Tianjin-Hebei region, as well as parts of the Shandong, Shanxi and Henan provinces. Moreover, this study reveals that dust processes during spring in Beijing have a limited impact on black carbon concentrations. This study's findings support controlling pollution in Beijing and improving regional air quality.
英文关键词	black carbon; optical characteristics; concentration characteristics; linear regression; potential source area
语种	英语
WOS研究方向	Environmental Sciences & Ecology ; Toxicology
WOS类目	Environmental Sciences ; Toxicology
WOS记录号	WOS:001192873100001
来源期刊	TOXICS
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/300830
作者单位	Capital Normal University; Capital Normal University
推荐引用方式 GB/T 7714	Lei, Wenkai,Li, Xingru,Yin, Zhongyi,et al. Pollution Characteristics and Source Apportionment of Black Carbon Aerosols during Spring in Beijing[J],2024,12(3).
APA	Lei, Wenkai,Li, Xingru,Yin, Zhongyi,Zhang, Lan,&Zhao, Wenji.(2024).Pollution Characteristics and Source Apportionment of Black Carbon Aerosols during Spring in Beijing.TOXICS,12(3).
MLA	Lei, Wenkai,et al."Pollution Characteristics and Source Apportionment of Black Carbon Aerosols during Spring in Beijing".TOXICS 12.3(2024).