Effect of Ammonia on Atmospheric Ion Hydration
Author Information
Author(s): Nadykto Alexey B., Yu Fangqun, Herb Jason
Primary Institution: Atmospheric Sciences Research Center, State University of New York at Albany
Hypothesis
The study investigates the role of ammonia in the formation of hydrogen bonded complexes of the common atmospheric hydrogensulfate ion with water.
Conclusion
Ammonia does not enhance the thermochemical stability of the HSO4− ion in gas-phase hydration under atmospheric conditions.
Supporting Evidence
- The presence of ammonia does not lead to a noticeable enhancement in the hydration strength of atmospheric clusters.
- The total free energy change for charged clusters is less favorable than for neutral clusters.
- Ammonia's affinity for negatively charged clusters is extremely low.
Takeaway
The study found that ammonia doesn't help stabilize certain atmospheric ions, which is important for understanding how clouds and aerosols form.
Methodology
The study used Density Functional Theory (DFT) to analyze the thermochemical stability of gas-phase hydrate clusters.
Limitations
The study primarily focuses on theoretical models and may not fully capture all atmospheric conditions.
Digital Object Identifier (DOI)
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