# 경상북도(慶尙北道) 지역(地域)의 강수성분(降水成分) 조사(調査)

• Suh, Myung-Soon (Dept. of Environmental Science, Graduate School of Environmental Studies, Yeungnam University) ;
• Kim, Yeung-Seok (Dept. of Agronomy, College of Agriculture and Animal Science, Yeungnam University) ;
• Kim, Bok-Jin (Dept. of Agronomy, College of Agriculture and Animal Science, Yeungnam University)
• 서명순 (영남대학교환경과학대학원 환경과학과) ;
• 김영석 (영남대학교 농축산대학 농학과) ;
• 김복진 (영남대학교 농축산대학 농학과)
• Published : 1991.06.30

#### Abstract

This study was carried out to investigate the chemical characteristics of the rain water in rural, urban and industrial areas which are located in Kyongbuk province, namely. Songju, Kumi, Kimchon, Yongdok and Teagu. The experiments were sampled the rain by amount of rain water from July to August in 1989, and analyzed the pH. EC, $SO_4\;^{2-}$, $NO_3^-$ and $Cl^-$ contents in the rain water. The results are summarized as follows : 1. The acid rain showed at the begining rain water of all surveyed sites, but there were difference by sites, and particulary severe in Kumi. 2. The content of $SO_4\;^{2-}$ in rain water was high in urban and industrial area, such as Teagu, Kumi and Kimchon. 3. According to the increasing rain water amount, the pH in rain water was high, and the contents of other components were low. This phenomenon remarkably presented at higher concentration of components and earlier rain water. 4. The electric conductivity was high significantly positive correlation with contents of $SO_4\;^{2-}$, $NO_3\;^-$ and $Cl^-$ in rain water, and pH was high significantly negative correlation with contents of $SO_4^{2-}$ and $NO_3\;^-$ in rain water, respectively.