Sources, size-resolved deposition in the human respiratory tract and health risks of submicron black carbon in urban atmosphere in Pearl River Delta, China

doi:10.1016/j.scitotenv.2023.164391

	Liu, Yuan 1,2; Wu, Lina 1,2; Huang, Shan 1,2; Song, Qicong 1,2; Hu, Weiwei3 ; Chen, Wei 3; Wu, Zhijun 4; Man, Ruiqi 4; He, Yao 1,2; Li, Wei 1,2; Peng, Yuwen 1,2; Liu, Junwen 1,2; Song, Wei 3; Ma, Nan 1,2; Yuan, Bin 1,2; Wang, Xinming3 ; Shao, Min 1,2
	Sources, size-resolved deposition in the human respiratory tract and health risks of submicron black carbon in urban atmosphere in Pearl River Delta, China
Source Publication	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
	2023-09-15
Volume	891 Pages:11
DOI	10.1016/j.scitotenv.2023.164391
Language	英语
WOS Research Area	Environmental Sciences & Ecology
Abstract	Black carbon (BC) has a significantly negative impact on air quality, climate and human health. Here we investigated the sources and health effects of BC in urban area of the Pearl River Delta (PRD) based on online data measured by Aerodyne soot particle high-resolution time of flight aerosol mass spectrometer (SP-AMS). In urban PRD, BC particles mainly came from vehicle emissions especially heavy-duty vehicle exhausts (contributing 42.9 % of total BC mass con-centration), long-range transport (27.6 %), and aged biomass combustion emissions (22.3 %). Indicated by source analysis using simultaneous aethalometer data, BC associated with local secondary oxidation and transport may also be originated from fossil fuel combustion, especially traffic sources in urban and surrounding areas. Size-resolved BC mass concentrations provided by SP-AMS, for the first time to our best knowledge, were used to calculate BC depo-sition in the human respiratory tract (HRT) of different populations (children, adults, and the elderly) by the Multiple -Path Particle Dosimetry (MPPD) model. We found that submicron BC was deposited more in the pulmonary (P) region (49.0-53.2 % of the total BC deposition dose), while less in the tracheobronchial (TB, 35.6-37.2 %) and head (HA, 11.2-13.8 %) regions. Adults suffered the highest BC deposition (1.19 & mu;g day-1) than the elderly (1.09 & mu;g day-1) and children (0.25 & mu;g day-1). BC deposition rate was greater at night (especially 18:00-24:00) than during the day-time. The maximum deposition in the HRT was found for BC particles around 100 nm, mainly in deeper respiratory regions (TB and P), which may cause more serious health effects. Adults and the elderly group are confronted with the notable carcinogenic risk of BC in the urban PRD, up to 29 times higher than the threshold. Our study emphasizes the need to control BC pollution in the urban area, especially nighttime vehicle emissions.
Keyword	Black carbon Source apportionment Inhaled particle deposition Size distribution Health risk
WOS ID	WOS:001022274100001
Indexed By	SCI
Citation statistics	Cited Times:4[WOS] [WOS Record] [Related Records in WOS]
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/74445
Collection	有机地球化学国家重点实验室
Corresponding Author	Huang, Shan
Affiliation	1.Jinan Univ, Inst Environm & Climate Res, Guangzhou 511443, Peoples R China 2.Guangdong Hongkong Macau Joint Lab Collaborat Inno, Guangzhou 511443, Guangdong, Peoples R China 3.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 4.Peking Univ, Coll Environm Sci & Engn, State Key Joint Lab Environm Simulat & Pollut Cont, Beijing 100871, Peoples R China
Recommended Citation GB/T 7714	Liu, Yuan,Wu, Lina,Huang, Shan,et al. Sources, size-resolved deposition in the human respiratory tract and health risks of submicron black carbon in urban atmosphere in Pearl River Delta, China[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2023,891:11.
APA	Liu, Yuan.,Wu, Lina.,Huang, Shan.,Song, Qicong.,Hu, Weiwei.,...&Shao, Min.(2023).Sources, size-resolved deposition in the human respiratory tract and health risks of submicron black carbon in urban atmosphere in Pearl River Delta, China.SCIENCE OF THE TOTAL ENVIRONMENT,891,11.
MLA	Liu, Yuan,et al."Sources, size-resolved deposition in the human respiratory tract and health risks of submicron black carbon in urban atmosphere in Pearl River Delta, China".SCIENCE OF THE TOTAL ENVIRONMENT 891(2023):11.

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