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http://dx.doi.org/10.7846/JKOSMEE.2017.20.2.76

Regional Variation and Discharge Characteristics of Stream Water Quality and Heavy Metals Around the Shihwa Lake Basin  

Jeong, Hyeryeong (Marine Chemistry & Geochemistry Research Center, Korea Institute of Ocean Science and Technology (KIOST))
Kim, Kyung-Tae (Marine Chemistry & Geochemistry Research Center, Korea Institute of Ocean Science and Technology (KIOST))
Kim, Eun-Soo (Marine Chemistry & Geochemistry Research Center, Korea Institute of Ocean Science and Technology (KIOST))
Lee, Seung-Yong (Marine Chemistry & Geochemistry Research Center, Korea Institute of Ocean Science and Technology (KIOST))
Ra, Kongtae (Marine Chemistry & Geochemistry Research Center, Korea Institute of Ocean Science and Technology (KIOST))
Publication Information
Journal of the Korean Society for Marine Environment & Energy / v.20, no.2, 2017 , pp. 76-83 More about this Journal
Abstract
In order to investigate the characteristics of water quality and heavy metals in Shihwa Lake, concentration comparisons according to land use types and mass discharge through streams were carried out. Based on classification for streams according to land use types, the concentration of DO, SS, POC, $NO_3$ and Chl-a showed higher concentrations in agricultural areas than in industrial and urban areas. However, COD, DIN, DIP, TN, TP, DOC, TOC and heavy metal concentrations showed relatively high values in industrial areas. The concentrations of water qualities and heavy metals were relatively high in March to May and the concentration decreased in summer seasons (July-August). The averages of stream discharges of water qualities were 1,172 kg/d for SS, 151 kg/d for TN, 11.1 kg/d for TP and 389 kg/d for TOC, respectively. The agricultural area, Jangjunbo(S8), accounted for 47.5%(TP)~75.1%(SS) in the total stream discharges. Cu, Zn and Cd in stream waters were found to be more than 92% of the total discharges in industrial area, showing descending order of Zn>Cu>Ni>Pb>Co>Cd.
Keywords
Shihwa Lake; Stream water; Water quality; Heavy metal; stream discharge;
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