Articles | Volume 17, issue 8
https://doi.org/10.5194/acp-17-5107-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
https://doi.org/10.5194/acp-17-5107-2017
© Author(s) 2017. This work is distributed under
the Creative Commons Attribution 3.0 License.
the Creative Commons Attribution 3.0 License.
Research article
| 
19 Apr 2017
Research article |
| 19 Apr 2017
Inconsistency of ammonium–sulfate aerosol ratios with thermodynamic models in the eastern US: a possible role of organic aerosol
Department of Earth and Planetary Sciences, Harvard University,
Cambridge, MA, USA
Daniel J. Jacob
Department of Earth and Planetary Sciences, Harvard University,
Cambridge, MA, USA
John A. Paulson School of Engineering and Applied Sciences, Harvard
University, Cambridge, MA, USA
Patrick S. Kim
Department of Earth and Planetary Sciences, Harvard University,
Cambridge, MA, USA
Eloise A. Marais
John A. Paulson School of Engineering and Applied Sciences, Harvard
University, Cambridge, MA, USA
now at: School of Geography, Earth and Environmental Sciences,
University of Birmingham, Edgbaston, UK
Jay R. Turner
Department of Energy, Environmental and Chemical Engineering,
Washington University, St. Louis, MO, USA
Pedro Campuzano-Jost
Cooperative Institute for Research in Environmental Sciences,
University of Colorado Boulder, Boulder, CO, USA
Department of Chemistry and Biochemistry, University of Colorado
Boulder, Boulder, CO, USA
Jose L. Jimenez
Cooperative Institute for Research in Environmental Sciences,
University of Colorado Boulder, Boulder, CO, USA
Department of Chemistry and Biochemistry, University of Colorado
Boulder, Boulder, CO, USA
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51 citations as recorded by crossref.
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- Coupling of organic and inorganic aerosol systems and the effect on gas–particle partitioning in the southeastern US H. Pye et al. 10.5194/acp-18-357-2018
- Performance of a Thermodynamic Model for Predicting Inorganic Aerosols in the Southeastern U.S. B. Cheng et al. 10.3390/atmos13121977
- Impact of nylon and teflon filter media on the sampling of inorganic aerosols over a high altitude site L. Yang et al. 10.1016/j.envadv.2023.100373
- Effects of Phase State and Phase Separation on Dimethylamine Uptake of Ammonium Sulfate and Ammonium Sulfate–Sucrose Mixed Particles W. DeRieux et al. 10.1021/acsearthspacechem.9b00142
- Investigation of global particulate nitrate from the AeroCom phase III experiment H. Bian et al. 10.5194/acp-17-12911-2017
- Ammonia Cycling and Emerging Secondary Aerosols from Arable Agriculture: A European and Irish Perspective V. Pohl et al. 10.3390/air1010003
- Atmospheric reduced nitrogen: Sources, transformations, effects, and management C. Driscoll et al. 10.1080/10962247.2024.2342765
- Evaluating the impact of control measures on sulfate-nitrate-ammonium aerosol variations and their formation mechanism in northern China during 2022 Winter Olympic Games Z. Gui et al. 10.1016/j.atmosres.2024.107579
- Importance of gas-particle partitioning of ammonia in haze formation in the rural agricultural environment J. Xu et al. 10.5194/acp-20-7259-2020
- Seasonal variations in size distribution, water-soluble ions, and carbon content of size-segregated aerosols over New Delhi P. Kumar et al. 10.1007/s11356-017-0954-6
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- Global Sources of Fine Particulate Matter: Interpretation of PM2.5 Chemical Composition Observed by SPARTAN using a Global Chemical Transport Model C. Weagle et al. 10.1021/acs.est.8b01658
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- Constraining East Asia ammonia emissions through satellite observations and iterative Finite Difference Mass Balance (iFDMB) and investigating its impact on inorganic fine particulate matter M. Momeni et al. 10.1016/j.envint.2024.108473
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- Chemical characterization of water-soluble ions in highly time-resolved atmospheric fine particles in Istanbul megacity E. Mertoglu et al. 10.1007/s11356-022-21300-z
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3 citations as recorded by crossref.
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- Atmospheric Aerosols: Clouds, Chemistry, and Climate V. McNeill 10.1146/annurev-chembioeng-060816-101538
- Evidence of 1991–2013 decrease of biogenic secondary organic aerosol in response to SO 2 emission controls E. Marais et al. 10.1088/1748-9326/aa69c8
Saved (preprint)
Latest update: 29 May 2025
Short summary
We identify a fundamental discrepancy between thermodynamic equilibrium theory and observations of inorganic aerosol composition in the eastern US in summer that shows low ammonium sulfate aerosol ratios. In addition, from 2003 to 2013, while SO2 emissions have declined due to US emission controls, aerosols have become more acidic in the southeastern US. To explain these observations, we suggest that the large and increasing source of organic aerosol may be affecting thermodynamic equilibrium.
We identify a fundamental discrepancy between thermodynamic equilibrium theory and observations...
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