50 citations as recorded by crossref.

1. First direct measurements of the nitrogen isotopic composition of vehicle tailpipe-emitted NH3 and implications for the source apportionment of NH3 in urban atmosphere Y. Feng et al. 10.1016/j.scitotenv.2024.177415
2. Long-Term Source Apportionment of Ammonium in PM2.5 at a Suburban and a Rural Site Using Stable Nitrogen Isotopes H. Kawashima et al. 10.1021/acs.est.2c06311
3. Systematic low bias of passive samplers in characterizing nitrogen isotopic composition of atmospheric ammonia Y. Pan et al. 10.1016/j.atmosres.2020.105018
4. Stable isotopic characterization and sources of ammonium in wet deposition at the Danjiangkou Reservoir X. Chen et al. 10.1016/j.apr.2024.102272
5. Sources and processes affecting the abundances of atmospheric NHx using δ15N over northwestern Indo-Gangetic plain C. Shaw et al. 10.1016/j.chemosphere.2024.142356
6. Long-term trends in inorganic aerosol chemical composition and chemistry at an urban and rural site in the northeastern US H. Kim et al. 10.1016/j.scitotenv.2023.166848
7. Nitrogen isotopic characteristics of aerosol ammonium in a Chinese megacity indicate the reduction from vehicle emissions during the lockdown period Z. Li et al. 10.1016/j.scitotenv.2024.171265
8. Isotopic imprints of aerosol ammonium over the north China plain A. Mgelwa et al. 10.1016/j.envpol.2022.120376
9. Roadside air pollution and secondary organic aerosol seasonal trends from an oxidation flow reactor in Seoul G. Park et al. 10.1016/j.atmosenv.2023.120051
10. δ15N-stable isotope analysis of NHx: An overview on analytical measurements, source sampling and its source apportionment N. Bhattarai et al. 10.1007/s11783-021-1414-6
11. The value of alien roadside trees for epiphytic lichen species along an urban pollution gradient T. Möller et al. 10.1093/jue/juab025
12. Persistent Nitrate in Alpine Waters with Changing Atmospheric Deposition and Warming Trends S. Clark et al. 10.1021/acs.est.1c02515
13. High atmospheric wet nitrogen deposition and major sources in two cities of Yangtze River Delta: Combustion-related NH3 and non-fossil fuel NOx Z. Chen et al. 10.1016/j.scitotenv.2021.150502
14. Isotopic Variability of Ammonia (δ15N-NH3) Slipped from Heavy-Duty Vehicles under Real-World Conditions Y. Chang et al. 10.1021/acs.estlett.2c00526
15. Significant contributions of combustion-related sources to ammonia emissions Z. Chen et al. 10.1038/s41467-022-35381-4
16. Quantifying the importance of vehicle ammonia emissions in an urban area of northeastern USA utilizing nitrogen isotopes W. Walters et al. 10.5194/acp-22-13431-2022
17. Ammonia emissions from fertilizer application as a dominant controller of nitrogenous aerosols in the urban atmosphere of Kunming, Southwest China Y. Zhou et al. 10.1016/j.apr.2024.102392
18. High contribution of anthropogenic combustion sources to atmospheric inorganic reactive nitrogen in South China evidenced by isotopes T. Li et al. 10.5194/acp-23-6395-2023
19. Regional Sources and Seasonal Variability of Rainwater Dissolved Organic and Inorganic Nitrogen at a Mid‐Atlantic, USA Coastal Site J. Czarnecki et al. 10.1029/2022JG007056
20. Large Seasonal Variation in Nitrogen Isotopic Abundances of Ammonia Volatilized from a Cropland Ecosystem and Implications for Regional NH3 Source Partitioning L. Song et al. 10.1021/acs.est.3c08800
21. Combustion related ammonia promotes PM2.5 accumulation in autumn in Tianjin, China H. Xiao et al. 10.1016/j.atmosres.2022.106225
22. Combustion-driven inorganic nitrogen in PM2.5 from a city in central China has the potential to enhance the nitrogen load of North China H. Xiao et al. 10.1016/j.jhazmat.2024.136620
23. Apportionment of NOx and NH3 emission sources in an urban coastal airshed: Insights from stable isotopes and a novel approach to intermittent sources Y. Qiu et al. 10.1016/j.atmosenv.2024.120533
24. Control of combustion related ammonia emissions can be effective in mitigating PM2.5 pollution in two megacities in Sichuan Basin, Southwest China H. Xiao et al. 10.1016/j.atmosres.2025.108059
25. Overlooked Nonagricultural and Wintertime Agricultural NH3 Emissions in Quzhou County, North China Plain: Evidence from 15N-Stable Isotopes S. Feng et al. 10.1021/acs.estlett.1c00935
26. Ammonium and nitrate in ice accretions and snow at two Central European montane locations: δ15N and δ18OH2O isotope ratios, fluxes and sources M. Novak et al. 10.1016/j.scitotenv.2024.178203
27. Developing Nitrogen Isotopic Source Profiles of Atmospheric Ammonia for Source Apportionment of Ammonia in Urban Beijing C. Wang et al. 10.3389/fenvs.2022.903013
28. Isotopic comparison of ammonium between two summertime field campaigns in 2013 and 2021 at a background site of North China Z. Zong et al. 10.1016/j.scitotenv.2023.167304
29. Enhanced Nonagricultural Emissions of Ammonia Influence Aerosol Ammonium in an Urban Atmosphere: Evidence from Kinetic Versus Equilibrium Isotope Fractionation Controls on Nitrogen M. Gu et al. 10.1021/acs.est.4c09103
30. Investigation of coastal ammonium aerosol sources in the Northwest Pacific Ocean A. MacFarland et al. 10.1016/j.atmosenv.2023.120034
31. Characteristics and sources of atmospheric ammonia at the SORPES station in the western Yangtze river delta of China R. Liu et al. 10.1016/j.atmosenv.2023.120234
32. Laboratory-based validation of a passive sampler for determination of the nitrogen stable isotope ratio of ammonia gas H. Kawashima et al. 10.1016/j.atmosenv.2020.118009
33. Investigating the effects of animal-specific δ15N-NH3 values volatilized from livestock waste on regional NH3 source partitioning D. Liu et al. 10.1016/j.aeaoa.2025.100314
34. Nitrogen isotopes indicate vehicle emissions and biomass burning dominate ambient ammonia across Colorado's Front Range urban corridor J. Felix et al. 10.1016/j.envpol.2022.120537
35. Nitrogen isotopes suggest agricultural and non-agricultural sources contribute equally to NH3 and NH4+ in urban Beijing during December 2018 N. Bhattarai et al. 10.1016/j.envpol.2023.121455
36. Sources of ammonium in seasonal wet deposition at a coastal New England city E. Le Roy et al. 10.1016/j.atmosenv.2021.118557
37. Active vs. passive isotopic analysis: Insights from urban Beijing field measurements and ammonia source signatures N. Bhattarai & S. Wang 10.1016/j.atmosenv.2023.120079
38. Is fertilization the dominant source of ammonia in the urban atmosphere? M. Gu et al. 10.1016/j.scitotenv.2022.155890
39. Vehicular Emissions Enhanced Ammonia Concentrations in Winter Mornings: Insights from Diurnal Nitrogen Isotopic Signatures M. Gu et al. 10.1021/acs.est.1c05884
40. An extraction method for nitrogen isotope measurement of ammonium in a low-concentration environment A. Lamothe et al. 10.5194/amt-16-4015-2023
41. Diversity of ammonia sources in Tianjin: nitrogen isotope analyses and simulations of aerosol ammonium L. Wu et al. 10.1071/EN24030
42. Biomass Burning Is a Non‐Negligible Source for Ammonium During Winter Haze Episodes in Rural North China: Evidence From High Time Resolution 15N‐Stable Isotope X. Feng et al. 10.1029/2022JD038012
43. Robust Evidence of 14C, 13C, and 15N Analyses Indicating Fossil Fuel Sources for Total Carbon and Ammonium in Fine Aerosols in Seoul Megacity S. Lim et al. 10.1021/acs.est.1c03903
44. Local vehicles add nitrogen to moss biomonitors in a low-traffic protected wilderness area as revealed by a long-term isotope study M. Donovan et al. 10.1016/j.jnc.2022.126292
45. 15N natural abundance of vehicular exhaust ammonia, quantified by active sampling techniques L. Song et al. 10.1016/j.atmosenv.2021.118430
46. Sources identification of ammonium in PM2.5 during monsoon season in Dhaka, Bangladesh H. Kawashima et al. 10.1016/j.scitotenv.2022.156433
47. Solid Phase Extraction Methodology for Robust Isotope Analysis of Atmospheric Ammonium A. MacFarland et al. 10.1021/acsearthspacechem.3c00375
48. Revisiting the Concentration Observations and Source Apportionment of Atmospheric Ammonia Y. Pan et al. 10.1007/s00376-020-2111-2
49. Characterizing the spatiotemporal nitrogen stable isotopic composition of ammonia in vehicle plumes W. Walters et al. 10.5194/acp-20-11551-2020
50. Atmospheric Ammonia in Beijing during the COVID-19 Outbreak: Concentrations, Sources, and Implications Y. Zhang et al. 10.1021/acs.estlett.0c00756