Articles | Volume 18, issue 16
Atmos. Chem. Phys., 18, 12241–12256, 2018
https://doi.org/10.5194/acp-18-12241-2018
Atmos. Chem. Phys., 18, 12241–12256, 2018
https://doi.org/10.5194/acp-18-12241-2018
Research article
24 Aug 2018
Research article | 24 Aug 2018

Effectiveness of ammonia reduction on control of fine particle nitrate

Hongyu Guo et al.

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Short summary
Reduction in ammonia has been proposed as a way to lower fine particle mass and improve air quality, but gas-phase ammonia is linked to agricultural productivity. We assess the feasibility of ammonia control at a variety of locations through an aerosol thermodynamic analysis. We show that aerosol response to ammonia control is highly nonlinear and only becomes effective when ambient particle pH drops below approximately 3. Particle pH is a relevant aerosol air quality parameter.
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