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Geochemical Behaviors and Environmental Changes of Bottom Sediments in Streams of Gwangju Metropolitan City  

Shin, Sang-Eun (Dept. of Earth systems and Environmental Science, Chonnam National University)
Oh, Kang-Ho (Dept. of Earth Science Education, Chonnam National University)
Publication Information
Journal of Environmental Impact Assessment / v.19, no.5, 2010 , pp. 497-510 More about this Journal
Abstract
Considering to the geochemical behaviors and environmental changes of bottom sediments in streams, Gwangju metropolitan city, this study focuses to analyses on grain sizes, metal elements and organic carbons in sediment samples from Yeongsan and Hwangryong rivers, and Gwangju stream. In the sediments, contents of Cu, Zn, Pb, P and TOC were highly variable, in the case of Gwangju stream particularly. Yenogsan and Hwangryong rivers are influenced by grain sizes and surrounding geological settings and Gwangju stream is connected to organic matters related to life fouls and so forth, with respect to the geochemical behaviorof bottom sediments. Li, Zn, Pb and Cu were enriched in Yeongsan and Hwangryong rivers and Li, Cu, Zn, Pb and P enriched in Gwangju stream, respectively. In the heavy metal contamination of above drainages, the site mutually connected Seobang(GJ 4) with Donggye(GJ 7) streams shows the highest values, in peculiar. It is inferred that those contamination values are mainly related with urban foul waters in the city.
Keywords
bottom sediment; Gwangju metropolitan city; geochemical behaviors; environmental changes; heavy metal contamination;
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Times Cited By KSCI : 2  (Citation Analysis)
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