Long-term trend of the mass and chemical species’ concentrations in PM2.5 at Seoul

Sanghee Han1, Yong Pyo Kim1, Ho-Jin Lim2, Hye Jung Shin3, Kwang Joo Moon3, You-Deog Hong4 and Seungmyeong Park3, (1)Ewha Womans University, Seoul, Korea, Republic of (South), (2)Kyungpook National University, Daegu, Korea, Republic of (South), (3)NIER National Institute of Environmental Research, Incheon, Korea, Republic of (South), (4)NIER National Institute of Environmental Research, Transportation Pollution Research Center, Incheon, South Korea