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http://dx.doi.org/10.4491/KSEE.2011.33.7.501

Evaluation of Water Quality for the Han River Tributaries Using Multivariate Analysis  

Kim, Yo-Yong (Gyeonggi-do Institute of Health & Environment)
Lee, Si-Jin (Department of Environmental Energy System Engineering, Kyonggi University)
Publication Information
Journal of Korean Society of Environmental Engineers / v.33, no.7, 2011 , pp. 501-510 More about this Journal
Abstract
In this study, water pollution sources of 14 major tributaries of Han river and characteristics of water quality for each target streams were evaluated based on water quality data in 2007.1-2009.12 (14 data sets) using a statistical package, SPSS-17.0. Cluster analysis over time and space for each stream resulted in 4 groups for the spatial variations in which type and density of pollution sources in the basins showed the greatest impact on grouping. Moreover, cluster analysis for the time variation in which rainfall, temperature and eutrophication were shown to contribute to the clustering, produced 2 groups, from summer to fall (July-Oct.) and from winter to early summer (Nov.-June). Four factors were found as responsible for the data structure explaining 71-90% of the total variance of the data set depending on the streams and they were organic matter, nutrients, bacterial contamination. Factor analysis showed main factors (water pollutants) changed according to the season with different pattern for each stream. This study demonstrated that water quality of each stream could produce useful outcomes when factor and pollution source of basin were evaluated together.
Keywords
Cluster Analysis; Factor Analysis; Pollution Source; Water Quality;
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Times Cited By KSCI : 5  (Citation Analysis)
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