Particle and aerosol research (한국입자에어로졸학회지)

Korean Association for Particle and Aerosol Research (한국입자에어로졸학회)
권호 표지

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

서울시 초미세먼지 질량농도 저감을 위한 입자 내 이온성분 최적감축방법 예측

  • 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)
  • Received : 2010.09.15
  • Accepted : 2010.10.11
  • Published : 2010.12.30
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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

Acknowledgement

Supported by : 한국연구재단

References

  1. Choi, E.K. and Kim, Y.P. (2004). Major factors affecting PM2.5 water content in Seoul and Gosan, J. Korean Society for Atmospheric Environment, 20, 803-810.
  2. Choi, E.K. and Kim, Y.P. (2010). Effect of aerosol hygroscopicity on fine particle mass concentration and light extinction coefficient at Seoul and Gosan in Korea, Asian J. Atmospheric Environment, 4, 55-61. https://doi.org/10.5572/ajae.2010.4.1.055
  3. Kim, J.Y. and Kim, Y.P. (2007). PM2.5 inorganic ions in Seoul measured at 2004-2005, Particle and Aerosol Research, 3, 57-66.
  4. Kim, J.Y., Kim, Y.P., Shim, S.G., Moon, K.-C., Chun, M.Y., and Kim, H.K. (1995) Estimation of water content and strong acidity of ambient particles in Seoul, J. Korea Air Pollution Research Association, 11, 69-76.
  5. Kim, Y.P. (2007). Trend and characteristics of ambient particles in Seoul, Asian J. Atmospheric Environment, 1, 9-13. https://doi.org/10.5572/ajae.2007.1.1.009
  6. Kim, Y.P., Seinfeld, J.H. & Saxena, P. (1993). Atmospheric gas-aerosol equilibrium: I . Thermodynamic model, Aerosol Science Technology, 19, 157-181. https://doi.org/10.1080/02786829308959628
  7. McMurry, P.H. (2000). A review of atmospheric aerosol measurements, Atmospheric Environment, 34, 1959-1999. https://doi.org/10.1016/S1352-2310(99)00455-0
  8. Meng, Z., Seinfeld, J.H (1995). Contribution of Water to Particulate Mass in the South Cost Air Basin, Aerosol Science Technology, 20, 414-423.
  9. Meng, Z., Dabdub, D. and Seinfeld, J.H. (1998). Size-resolved and chemically resolved model of atmospheric aerosol dynamics, J. Geophysical Research, 103, 3419-3435.
  10. Park, M.H., Kim, Y.P., and Kang, C.H. (2004). Aerosol composition change due to dust storm: measurements between 1992 and 1999 at Gosan, Korea, J. Geophysical Research, 109, D19S13, doi:10.1029/2003JD004110.
  11. Peng, C., Chan, C.K. (2000). The water cycles of water-soluble organic salts of atmospheric importance, Atmospheric Environment, 35, 1183-1192.
  12. Ueda H., Taroh T., Kim Y.P., and Sha W., (2000). Behaviors of volatile inorganic components in urban aerosols, Atmospheric Environment, 34, 353-361. https://doi.org/10.1016/S1352-2310(99)00383-0
  13. Wexler, A.S. and Seinfeld J.H. (1991). Second generation inorganic aerosol model, Atmospheric Environment, 25A, 2731-2748.
  14. Zhang, Y., Seigneur, C., Seinfeld, J.H., Jacobson, M.Z., Clegg, S.L., Binkowski, F.S. (2000). A comparative review of inorganic aerosol thermodynamic equilibrium modules: similarities, differences, and their likely causes, Atmospheric Environment, 34, 117-137. https://doi.org/10.1016/S1352-2310(99)00236-8
  15. Zhang, X.Q., McMurry, P.H. (1993). Evaporative losses of fine particulate nitrates during sampling, Atmospheric Environment, 26A, 3305-3312.