Characterization of the nitrogen stable isotope composition (δ15N) of ship-emitted NOx

doi:10.5194/acp-23-12851-2023

	Characterization of the nitrogen stable isotope composition (δ¹⁵N) of ship-emitted NO_x
	Sun, Zeyu 1,2,9; Zong, Zheng 1,3; Tan, Yang 1; Tian, Chongguo 1,2,8; Liu, Zeyu 4; Zhang, Fan 5; Sun, Rong 1,2; Chen, Yingjun 4; Li, Jun 6,7; Zhang, Gan 6,7
刊名	ATMOSPHERIC CHEMISTRY AND PHYSICS
	2023-10-13
卷号	23 期号:19 页码:12851-12865
ISSN号	1680-7316
DOI	10.5194/acp-23-12851-2023
通讯作者	Tian, Chongguo(cgtian@yic.ac.cn)
英文摘要	The nitrogen stable isotope composition (delta N-15) of nitrogen oxides (NOx) is a powerful indicator of source apportionment of atmospheric NOx; however, delta N-15-NOx values emitted from ships have not been reported, affecting the accuracy of source partitioning of atmospheric NOx in coastal zones with a lot of vessel activity. In addition, delta N-15-NOx values from ship emissions could also be important for source apportionment of atmospheric nitrogen deposition in remote ocean regions. This study systemically analysed the delta N-15-NOx variability and main influencing factors of ship emissions. The results showed that delta N-15-NOx values from ships, which were calculated by weighting the emission values from the main engine and auxiliary engine of the vessel, ranged from -35.8 parts per thousand to 2.04 parts per thousand with a mean +/- standard deviation of -18.5 +/- 10.9 parts per thousand. The delta N-15-NOx values increased monotonically with the ongoing tightening of emission regulations, presenting a significantly negative logarithmic relationship with NOx concentrations (p<0.01). The selective catalytic reduction (SCR) system was the most important factor affecting changes in delta N-15-NOx values, followed by the ship category, fuel types, and operation states of ships. Based on the relationship between delta N-15-NOx values and emission regulations observed in this investigation, a mass-weighted model to compute accurate assessments over time was developed, and the temporal variation in delta N-15-NOx values from ship emissions in the international merchant fleet was evaluated. These simulated delta N-15-NOx values can be used to select suitable delta N-15-NOx values for a more accurate assessment, including the contribution of ship-emitted exhaust to atmospheric NOx and its influence on atmospheric nitrate (NO air quality and nitrogen deposition studies.
WOS关键词	EXHAUST EMISSIONS ; AIS DATA ; NITRATE ; FUEL ; COMBUSTION ; VEHICLE ; OXIDES ; SOIL ; VARIABILITY ; PREDICTION
WOS研究方向	Environmental Sciences & Ecology ; Meteorology & Atmospheric Sciences
语种	英语
WOS记录号	WOS:001162371700001
资助机构	National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.yic.ac.cn/handle/133337/34877]
专题	中国科学院烟台海岸带研究所
通讯作者	Tian, Chongguo
作者单位	1.Chinese Acad Sci, Yantai Inst Coastal Zone Res, CAS Key Lab Coastal Environm Proc & Ecol Remediat, Yantai 264003, Peoples R China 2.Shandong Key Lab Coastal Environm Proc, Yantai 264003, Peoples R China 3.Hong Kong Polytech Univ, Dept Civil & Environm Engn, Hong Kong 999077, Peoples R China 4.Fudan Univ, Dept Environm Sci & Engn, Shanghai Key Lab Atmospher Particle Pollut & Prev, Shanghai 200438, Peoples R China 5.East China Normal Univ, Sch Geog Sci, Key Lab Geog Informat Sci, Minist Educ, Shanghai 200241, 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 Key Lab Environm Protect & Resources Ut, Guangzhou 510640, Peoples R China 8.Chinese Acad Sci, Ctr Ocean Mega Sci, Qingdao 266071, Peoples R China 9.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Sun, Zeyu,Zong, Zheng,Tan, Yang,et al. Characterization of the nitrogen stable isotope composition (δ¹⁵N) of ship-emitted NO_x[J]. ATMOSPHERIC CHEMISTRY AND PHYSICS,2023,23(19):12851-12865.
APA	Sun, Zeyu.,Zong, Zheng.,Tan, Yang.,Tian, Chongguo.,Liu, Zeyu.,...&Zhang, Gan.(2023).Characterization of the nitrogen stable isotope composition (δ¹⁵N) of ship-emitted NO_x.ATMOSPHERIC CHEMISTRY AND PHYSICS,23(19),12851-12865.
MLA	Sun, Zeyu,et al."Characterization of the nitrogen stable isotope composition (δ¹⁵N) of ship-emitted NO_x".ATMOSPHERIC CHEMISTRY AND PHYSICS 23.19(2023):12851-12865.