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KMID : 0615219780040010015
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Journal of Kwangju Health
1978 Volume.4 No. 1 p.15 ~ p.29
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Studies on the Environmental pollution in Gwangju Area (Ⅱ) -A Study on Water Pollution of Gwangju River
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남현근
류일광/이치영/강영식
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Abstract
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Water pollution of Gwangju river was examined for seven months from June 15, 1977 to December 15, 1977. For checking the water pollution, 11 sampling positions were selected; 5 from main river and 6 from branch channels. We assumed that the water pollution of Gwangju river was due to the Organic materials, which came from the domestic sewage. The apparatus for this test were; PH meter (Orion Model 301), Dissolved-Oxigen & Temperatur Meter (Delta Model 1010), Spectrophotometer (Hitachi 181), and Atomic absorption spectropbotometer (Perkin Elmer Model 403). The results we obtained. are as follows.
1. The average range for mid-stream (sampling position 3.5 and 6 of Gwangju river) was 1.3-2.4 ppm of Dissolved oxygen (DO), 71.0-96.4 ppm of Biochemical oxygen. demand (BOD), 173.4 -196.9 ppm of Chemical oxygen demand (COD), 132.1 -189.3 ppm of Suspended Solid (SS), 6.0-9.1 ppm of NH₄-N, and 3.2-3.6 ppm of Alkyl benzene-sulfonate (ABS).
2. The mean value for heavy metals for the lower stream of Gwangju river (sampling position 10) was 0.057ppm of Cu, 4.040ppm of Mn, 1.624ppm of Fe, 0.038ppm of Pb, and 0.0007ppm of Hg, but Cd was not detected.
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