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Estimation of Optimum PM2.5 Ionic Concentration Control Strategy for Reducing Fine Particle Mass Concentrations in Seoul  

Kim, Jung Youn (ERM Korea)
Lee, Ji Won (Department of Environmental Science and Engineering, Ewha Womans University)
Kim, Yong Pyo (Department of Environmental Science and Engineering, Ewha Womans University)
Publication Information
Particle and aerosol research / v.6, no.4, 2010 , pp. 151-164 More about this Journal
Abstract
Inorganic ions and water are major components of ambient fine particles. Water content in fine particles is mainly determined by ambient meteorological conditions and the concentrations of hygroscopic species such as inorganic ions. Thus, to reduce fine particle mass concentration, it is important to accurately estimate the relationship between water content and the concentration of ions in fine particles. Water content in fine particles in Seoul are estimated by using a gas/particle equilibrium model to understand the characteristics of fine particle mass concentration. In addition, sensitivity of fine particle mass concentration to the changes of particulate ionic species (sulfate, nitrate, and ammonium) is estimated. It was found that water content in Seoul is mostly determined by the concentrations of the hygroscopic ionic species, especially, sulfate and ammonium, and ambient relative humidity.
Keywords
Aerosol water content; Relative humidity; Mass concentration; Gas/particle equilibrium;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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