Insights into anthropogenic impact on atmospheric inorganic aerosols in the largest city of the Tibetan Plateau through multidimensional isotope analysis

doi:10.1016/j.scitotenv.2024.172643

	Zheng, Xueqin 1; Liu, Junwen 1; Zhong, Bingqian 1; Wang, Yujing 1,7; Wu, Zeyan 1; Chuduo, Nima 2; Ba, Bian 2; Yuan, Xin 1; Fan, Meiyi 3; Cao, Fang 3; Zhang, Yanlin 3; Chen, Weihua 1; Zhou, Luxi 4; Ma, Nan 1; Yu, Pengfei 1; Li, Jun5,6 ; Zhang, Gan5,6
	Insights into anthropogenic impact on atmospheric inorganic aerosols in the largest city of the Tibetan Plateau through multidimensional isotope analysis
Source Publication	SCIENCE OF THE TOTAL ENVIRONMENT
ISSN	0048-9697
	2024-06-15
Volume	929 Pages:9
DOI	10.1016/j.scitotenv.2024.172643
Language	英语
WOS Research Area	Environmental Sciences & Ecology
Abstract	Particulate inorganic nitrogen aerosols (PIN) significantly influence air pollution and pose health risks world-wide. Despite extensive observations on ammonium (pNH(4)(+)) and nitrate (pNO(3)) aerosols in various regions, their key sources and mechanisms in the Tibetan Plateau remain poorly understood. To bridge this gap, this study conducted a sampling campaign in Lhasa, the Tibetan Plateau's largest city, with a focus on analyzing the multiple isotopic signatures (delta N-15, Delta O-17). These isotopes were integrated into a Bayesian mixing model to quantify the source contributions and oxidation pathways for pNH(4)(+) and pNO(3)(-). Our results showed that traffic was the largest contributor to pNH(4)(+) (31.8 %), followed by livestock (25.4 %), waste (21.8 %), and fertilizer (21.0 %), underscoring the impact of vehicular emissions on urban NH3 levels in Lhasa. For pNO(3)(-), coal combustion emerged as the largest contributor (27.3 %), succeeded by biomass burning (26.3 %), traffic emission (25.3 %), and soil emission (21.1 %). In addition, the Delta O-17-based model indicated a dominant role of NO2 + OH (52.9 %) in pNO(3)(-) production in Lhasa, which was similar to previous observations. However, it should be noted that the NO3 + volatile organic component (VOC) contributed up to 18.5 % to pNO(3)(-) production, which was four times higher than the Tibetan Plateau's background regions. Taken together, the multidimensional isotope analysis performed in this study elucidates the pronounced influence of anthropogenic activities on PIN in the atmospheric environment of Lhasa.
Keyword	Lhasa Inorganic aerosol Isotope Anthropogenic activity Diurnal variation
WOS ID	WOS:001233391500002
Indexed By	SCI
Citation statistics
Document Type	期刊论文
Identifier	http://ir.gig.ac.cn/handle/344008/78559
Collection	有机地球化学国家重点实验室
Corresponding Author	Liu, Junwen
Affiliation	1.Jinan Univ, Inst Environm & Climate Res, Guangzhou 511443, Peoples R China 2.Lhasa Meteorol Adm, Lhasa 850010, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Sch Ecol & Appl Meteorol, Nanjing 210044, Peoples R China 4.Meteorol Adm, Guangzhou Inst Trop & Marine Meteorol, Guangzhou 510640, Peoples R China 5.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Guangzhou 510640, Peoples R China 7.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Dept Environm Sci & Engn, Xian 710049, Peoples R China
Recommended Citation GB/T 7714	Zheng, Xueqin,Liu, Junwen,Zhong, Bingqian,et al. Insights into anthropogenic impact on atmospheric inorganic aerosols in the largest city of the Tibetan Plateau through multidimensional isotope analysis[J]. SCIENCE OF THE TOTAL ENVIRONMENT,2024,929:9.
APA	Zheng, Xueqin.,Liu, Junwen.,Zhong, Bingqian.,Wang, Yujing.,Wu, Zeyan.,...&Zhang, Gan.(2024).Insights into anthropogenic impact on atmospheric inorganic aerosols in the largest city of the Tibetan Plateau through multidimensional isotope analysis.SCIENCE OF THE TOTAL ENVIRONMENT,929,9.
MLA	Zheng, Xueqin,et al."Insights into anthropogenic impact on atmospheric inorganic aerosols in the largest city of the Tibetan Plateau through multidimensional isotope analysis".SCIENCE OF THE TOTAL ENVIRONMENT 929(2024):9.

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