First Measurements of the Nitrogen Stable Isotope Composition (δ 15 N) of Ship-emitted NO x Article Swipe
Zeyu Sun
,
Zheng Zong
,
Yang Tan
,
Chongguo Tian
,
Zeyu Liu
,
Fan Zhang
,
Rong Sun
,
Yingjun Chen
,
Jun Li
,
Gan Zhang
·
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.5194/egusphere-2023-500
YOU?
·
· 2023
· Open Access
·
· DOI: https://doi.org/10.5194/egusphere-2023-500
The nitrogen stable isotope composition (δ15N) of nitrogen oxides (NOx) is a powerful indicator for source apportionment of atmospheric NOx; however, δ15N–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 ocean vessel activity. This study systemically analyzed the δ15N–NOx variability and main influencing factors of ship emissions. Results showed that δ15N–NOx values from ships ranged from −35.8 ‰ to 2.04 ‰ with a mean ± standard deviation of −18.5 ± 10.9 ‰. The δ15N–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 δ15N–NOx values, compared with fuel types and operation states of ships. Based on the relationship between δ15N–NOx values and emission regulations observed in this investigation, the temporal variation in δ15N–NOx values from ship emissions in the international merchant fleet was evaluated by developing a mass-weighted model. These simulated δ15N–NOx values can be used to select suitable δ15N–NOx values for a more accurate assessment of the contribution of ship-emitted exhaust to atmospheric NOx.
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Metadata
- Type
- preprint
- Language
- en
- Landing Page
- https://doi.org/10.5194/egusphere-2023-500
- OA Status
- gold
- References
- 38
- Related Works
- 10
- OpenAlex ID
- https://openalex.org/W4365516064
All OpenAlex metadata
Raw OpenAlex JSON
- OpenAlex ID
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https://openalex.org/W4365516064Canonical identifier for this work in OpenAlex
- DOI
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https://doi.org/10.5194/egusphere-2023-500Digital Object Identifier
- Title
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First Measurements of the Nitrogen Stable Isotope Composition (δ 15 N) of Ship-emitted NO xWork title
- Type
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preprintOpenAlex work type
- Language
-
enPrimary language
- Publication year
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2023Year of publication
- Publication date
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2023-04-14Full publication date if available
- Authors
-
Zeyu Sun, Zheng Zong, Yang Tan, Chongguo Tian, Zeyu Liu, Fan Zhang, Rong Sun, Yingjun Chen, Jun Li, Gan ZhangList of authors in order
- Landing page
-
https://doi.org/10.5194/egusphere-2023-500Publisher landing page
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YesWhether a free full text is available
- OA status
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goldOpen access status per OpenAlex
- OA URL
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https://doi.org/10.5194/egusphere-2023-500Direct OA link when available
- Concepts
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NOx, δ15N, Nitrogen, Nitrogen oxides, Atmospheric sciences, Emission inventory, Environmental science, Environmental chemistry, Chemistry, Isotopes of nitrogen, Stable isotope ratio, Combustion, Air pollution, δ13C, Waste management, Geology, Engineering, Physics, Quantum mechanics, Organic chemistryTop concepts (fields/topics) attached by OpenAlex
- Cited by
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0Total citation count in OpenAlex
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38Number of works referenced by this work
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10Other works algorithmically related by OpenAlex
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