제주지역 강우의 분석 및 분석 데이타의 신뢰도 조사 = Analysis of Rainwater in Cheju Island and Confidence Investigation for Analytical Data

다국어 초록 (Multilingual Abstract)

The rainwater samples were collected from the 1100 Site of Mt. Halla and Cheju city during the period of March in 1997 to August in 1998, and the major soluble ions were analyzed and their analytical confidence has been investigated. The volume weighted mean values of pH in 1100 Site and Cheju city were 487 and 4.82, respectively, and those of electrical conductivity were 16.0 and 23.3 μS/cm. The mean concentrations of ions in 1100 Site were in the order of Cl^(-)>Na^(+)>SO₄^(2-)>NH₄^(+)>H^(+)>NO₃^(-)>Mg^(2+)>Ca^(2+)>K^(2+)>HCOO^(-)>CH₃COO^(-)>F^(-)>HCO₃^(-)>CH₃SO₃^(-), and those in Cheju city were the same order except that NO₃^(-) was higher than H^(+). The comparison between several correlation coefficients has been applied for the investigation of analytical confidence, such as equivalent concentrations sum, the measured and calculated conductivity, and the acid fraction. The correlation coefficients between cation and anion equivalent concentrations sum were 0.981 and 0.960, respectively, in 1100 Site and Cheju city, and those of the calculated and measured electric conductivity in two regions were 0.989 and 0.993, respectively, so that the analytical data has been shown to be in good reliabilities. Also, the correlation coefficients between the acid fractions from the equivalent concentrations of ions and those from the measured pH and electric conductivity were 0.966 and 0.936, respectively, in two areas, so that these results also have shown a quite satisfactory analytical confidence.