This study was carried out to investigate the characteristics of chemical components and precipitation at Kimhae area from March, 1992 to June, 1994. The pH values, concentration of soluble ions(Cl^-, NO_2^-, NO_3^-, SO_4^2-, PO_4^3-, F^-, Mg^2+, Ca^2+, Mn^2+, K^+) and nonsoluble metals(Cr, Si, Zn, Pb, Cu, Fe, Mn, Mg, Al, V, Ca) were measured by pH meter, IC(Ion Chromatography) and ICP(Inductively Coupled Plasma). The data were analyzed by the daily, hourly distribution characteristics of acidity and chemical components, as well as the correlation between them.
The results are as follows.
1. The pH range of precipitation was from 3.45 to 6.80 in Kimhae area, and average value was pH 4.62 and main chemical components were SO_4^2-, Cl^-, NO_3^-. The highest pH value and concentration appeared in initial rain, which might result from urbanization and industrialization in this area and long term transportation from China.
2. The hourly correction distribution of main anions related to pH value in the rainwater showed SO_4^2- > NO_3^- > Cl^-. Hourly concentration of heavy metal and each ion was highly correlated with pH in the precipitation.

• 박종길(인제대학교 환경학과) | Jong-KiI Park (Dept. of Environmental Scíences, Inje Uníversity)
• 황용식(인제대학교 환경학과) | Yong-Shik Hwang (Dept. of Environmental Scíences, Inje Uníversity)