Insights into anthropogenic impact on atmospheric inorganic aerosols in the largest city of the Tibetan Plateau through multidimensional isotope analysis
文献类型：期刊论文
| 作者 | Zheng, Xueqin5; Liu, Junwen5; Zhong, Bingqian5; Wang, Yujing1,5; Wu, Zeyan5; Chuduo, Nima2; Ba, Bian2; Yuan, Xin5; Fan, Meiyi3; Cao, Fang3 |
| 刊名 | SCIENCE OF THE TOTAL ENVIRONMENT
 |
| 出版日期 | 2024-06-15 |
| 卷号 | 929页码:9 |
| 关键词 | Lhasa Inorganic aerosol Isotope Anthropogenic activity Diurnal variation |
| ISSN号 | 0048-9697 |
| DOI | 10.1016/j.scitotenv.2024.172643 |
| 英文摘要 | 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. |
| WOS研究方向 | Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001233391500002 |
| 源URL | [http://ir.gig.ac.cn/handle/344008/78558]  |
| 专题 | 有机地球化学国家重点实验室 |
| 通讯作者 | Liu, Junwen |
| 作者单位 | 1.Xi An Jiao Tong Univ, Sch Energy & Power Engn, Dept Environm Sci & Engn, Xian 710049, 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.Jinan Univ, Inst Environm & Climate Res, Guangzhou 511443, Peoples R China 6.Chinese Acad Sci, Guangzhou Inst Geochem, State Key Lab Organ Geochem, Guangzhou 510640, Peoples R China 7.Chinese Acad Sci, Guangzhou Inst Geochem, Guangdong Hong Kong Macao Joint Lab Environm Pollu, Guangzhou 510640, Peoples R China |
| 推荐引用方式 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. |
入库方式： OAI收割
来源：广州地球化学研究所
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