Abstract
The character of ultraviolet absorbance spectrum of various surface water is statistically investigated.
In all districts, there is high degree of correlation between absorbance at 260mμ and COD, BOD, NH4-N, DO. Absorbande at 240mμ is correlated with electric conductivity.
From the principal components analysis, applicated to the ultraviolet absorbance spectrum, absorbances at 350mμ 260280mμ and 200mμ are usefull to classify the water quality.
Single and or multiple regression curves are examined to estimate some standard water quality index.
