HR: 1330h
AN: A52C-0820    [PDF]
TI: Seasonal Variability of 34S in Precipitation from two Urban Sites of Korea
AU: * Jang, J
EM: peter_korea@hotmail.com
AF: School of Earth and Environmental Sciences, Seoul National University, Shinlim-dong San 56-1, Seoul, 151-742 Korea, Republic of
AU: Lee, I
EM: insung@snu.ac.kr
AF: School of Earth and Environmental Sciences, Seoul National University, Shinlim-dong San 56-1, Seoul, 151-742 Korea, Republic of
AU: Kim, G
EM: gkim@snu.ac.kr
AF: School of Earth and Environmental Sciences, Seoul National University, Shinlim-dong San 56-1, Seoul, 151-742 Korea, Republic of
AB: We measured the seasonal variations of 34S, together with major ions and naturally occurring 210Pb, 210Po, and 7Be in snow and rainwater samples from urban areas. Precipitation samples were collected from metropolitan city, Seoul and large port city, Busan, Korea, for one year from June 2002 to June 2003. The ��34S values of sulfate in precipitation ranged from -4.3� to +6.6� (mean: 3.72�) and +1.0� to +18.6� (mean: 5.55�) in Seoul and Busan, respectively. These ��34S values suggest that sulfate in Seoul precipitation originates more from anthropogenic sources relative to that in Busan. The elevated anthropogenic sources in Seoul might be influenced by industrial activities from surrounding industrial cities, while the scatter of ��34S values in Busan may be influenced by marine air. As such, Seoul and Busan showed significant differences in chemical compositions and naturally occurring radionuclides, such as 210Pb, 210Bi, and 7Be. In both areas, ��34S values are high in fall and low in spring, which indicates that ��34S values of spring time are affected by biogenic sources compared to those of other seasons.
DE: 0345 Pollution--urban and regional (0305)
SC: Atmospheric Sciences [A]
MN: 2003 Fall Meeting