Combustion-related activities dominate atmospheric ammonia in the Pearl River Delta region, China
文献类型：期刊论文
| 作者 | He, Mengzhi5; Liu, Junwen5; Pei, Chenglei1; Jiang, Fan5; Chen, Zixi5; Zheng, Xueqin5; Yang, Xiaoxiao5; Li, Guanghui5; Zong, Zheng2; Cao, Fang3 |
| 刊名 | FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING
 |
| 出版日期 | 2025-06-01 |
| 卷号 | 19期号:6页码:12 |
| 关键词 | Ammonia Stable nitrogen isotope Source apportionment Canton Tower PRD region |
| ISSN号 | 2095-2201 |
| DOI | 10.1007/s11783-025-1997-4 |
| 通讯作者 | Liu, Junwen(liu.junwen@jnu.edu.cn) |
| 英文摘要 | Ammonia (NH3) is a key precursor of fine particulate matter (PM2.5) in the air; however, its emission sources at different heights remain poorly understood in the Pearl River Delta (PRD) region of China. In this study, we simultaneously collected PM2.5 samples at three atmospheric heights (ground, 118 m, and 488 m) based on the atmospheric observatories of Canton Tower, the tallest structure in the PRD region. Our results showed that the average NH4+ concentrations were 2.7 +/- 1.4, 3.0 +/- 1.8, and 2.6 +/- 1.7 mu g/m(3) at the ground site, 118 m, and 488 m during the sampling campaign, with no significant difference (p > 0.05) among the three heights. However, the stable nitrogen isotope composition values in NH4+ (delta N-15-NH4+) displayed a significant correlation with height (p < 0.05). We further calculated the initial delta N-15-NH3 values and performed source apportionments using the Bayesian Isotope Mixture Model. The results indicated that the mean contributions of agriculture, waste, vehicle, biomass burning, NH3 slip, and coal combustion were 9.9% +/- 4.4%, 8.3% +/- 5.5%, 29% +/- 8.0%, 16% +/- 2.2%, 25% +/- 6.0%, and 12% +/- 3.4%, respectively, at the ground site during the sampling campaign. By contrast, the contributions of sources at 488 m remained relatively stable due to the limited influence of local activities. Overall, our study highlights the dominant role of combustion sources in NH3 emissions in the PRD region, with their contribution being highly dependent on atmospheric height. |
| WOS关键词 | ISOTOPIC COMPOSITION ; NITROGEN ; URBAN ; EMISSIONS ; FRACTIONATIONS ; VARIABILITY ; INSIGHTS ; RATIOS ; CARBON ; RAIN |
| WOS研究方向 | Engineering ; Environmental Sciences & Ecology |
| 语种 | 英语 |
| WOS记录号 | WOS:001472121600001 |
| 资助机构 | National Natural Science Foundation of China ; National Key Research and Development Program of China ; Guang Dong Basic and Applied Basic Research Foundation (China) |
| 源URL | [http://ir.yic.ac.cn/handle/133337/40864]  |
| 专题 | 烟台海岸带研究所_中科院海岸带环境过程与生态修复重点实验室 |
| 通讯作者 | Liu, Junwen |
| 作者单位 | 1.Guangdong Ecol & Environm Monitoring Ctr, Guangzhou Sub Branch, Guangzhou 510006, Peoples R China 2.Shandong Univ, Environm Res Inst, Qingdao 266237, Peoples R China 3.Nanjing Univ Informat Sci & Technol, Sch Ecol & Appl Meteorol, Nanjing 210044, Peoples R China 4.Chinese Acad Sci, Yantai Inst Coastal Zone Res YIC, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 5.Jinan Univ, Inst Environm & Climate Res, Coll Environm & Climate, Guangzhou 511443, Peoples R China |
| 推荐引用方式 GB/T 7714 | He, Mengzhi,Liu, Junwen,Pei, Chenglei,et al. Combustion-related activities dominate atmospheric ammonia in the Pearl River Delta region, China[J]. FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,2025,19(6):12. |
| APA | He, Mengzhi.,Liu, Junwen.,Pei, Chenglei.,Jiang, Fan.,Chen, Zixi.,...&Tian, Chongguo.(2025).Combustion-related activities dominate atmospheric ammonia in the Pearl River Delta region, China.FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING,19(6),12. |
| MLA | He, Mengzhi,et al."Combustion-related activities dominate atmospheric ammonia in the Pearl River Delta region, China".FRONTIERS OF ENVIRONMENTAL SCIENCE & ENGINEERING 19.6(2025):12. |
入库方式： OAI收割
来源：烟台海岸带研究所
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