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http://dx.doi.org/10.15681/KSWE.2017.33.2.203

Correlation between TOC and Water Pollution Index in Major Streams of Gwangju  

Yang, Yoon-Cheol (Gwangju Metropolitan Health & Environment Research Institute)
Lee, Dae-Haeng (Gwangju Metropolitan Health & Environment Research Institute)
Lee, Kyung-Seog (Gwangju Metropolitan Health & Environment Research Institute)
An, Sang-Su (Gwangju Metropolitan Health & Environment Research Institute)
Song, Hyeong-Myeong (Gwangju Metropolitan Health & Environment Research Institute)
Lee, Se-Haeng (Gwangju Metropolitan Health & Environment Research Institute)
Yoon, Sang-Hoon (Gwangju Metropolitan Health & Environment Research Institute)
Kim, Sun-Jung (Gwangju Metropolitan Health & Environment Research Institute)
Jeon, Hong-Dae (Gwangju Metropolitan Health & Environment Research Institute)
Cho, Young-Gwan (Gwangju Metropolitan Health & Environment Research Institute)
Seo, Gwang-Yeob (Gwangju Metropolitan Health & Environment Research Institute)
Publication Information
Journal of Korean Society on Water Environment / v.33, no.2, 2017 , pp. 203-210 More about this Journal
Abstract
This study was performed to verify the replacement of COD to TOC, which is more accurate and reliable in analysis, as the water quality pollution index and to investigate the characteristics of water quality and the correlations for organic matter, suspended solids and nutrient materials during 2012 to 2015. The oxidation rates were compared by calculating the values of BOD-C/TOC & COD-C/TOC. The average value of TOC was 3.4(1.1 ~ 8.0) mg/L at 14 sites during the period. The ratios of BOD-C/TOC and COD-C/TOC, that mean the resolvability amounts among all carbon materials, were 28.8% and 62.7%, respectively. The correlation coefficient of TOC to COD at all sites was 0.718 (p<0.01), the highest value in comparing all items. The correlation coefficient of TOC to COD at Gwangju stream was 0.753 (p<0.01), the highest compare to the values at other rivers. The correlation coefficient of TOC to COD was 0.757 (p<0.01) at all sites in the range of TP-III ($0.1{\leq}TP$) and the value was 0.762 (p<0.01) in the range of TN-II ($2.0{\leq}TN$<3.0). As a result, TOC could be used as a water pollution index of organic matter instead of COD.
Keywords
$COD_{Mn}$; Correlation Coefficient; Oxidation Rate; TOC; Water Pollution Index;
Citations & Related Records
Times Cited By KSCI : 9  (Citation Analysis)
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