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http://dx.doi.org/10.33768/ksue.2018.18.4.455

Distribution Characteristics of Organic Matters and Nutrients in Surface Sediments of Yeongsan River Basin  

Bong, Kimoon (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Kang, Taewoo (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Yang, Haejong (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Han, Jonghak (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Yang, Wonjun (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Jeong, Hyojin (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Jung, Heejung (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Hwang, Soonhong (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Kim, Kyunghyun (Yeongsan River Environment Research Center, National Institute of Environmental Research)
Publication Information
Journal of the Korean Society of Urban Environment / v.18, no.4, 2018 , pp. 455-463 More about this Journal
Abstract
This study was carried out to assess the distribution and pollution level of organic matters and nutrients in surface sediments of the Yeongsan River Basin. The surface sediments were collected from the mainstream (12) and tributaries sites (4) for two years from 2015 to 2016, and the particle sizes, organic matters (Ignition Loss, COD, TOC) and nutrients (TN, TP, SRP) were analyzed. The distribution of particle sizes was dominated by sand in the upstream sites (MS1-MS7) and by silt loam in the downstream sites (MS8-MS12), but MS3 and MS6, located slightly upstream of the two weirs, were found to be mostly loamy sand and silt loam, respectively. As a results of the correlation assessment, the organic matters (IL, COD, TOC) were strongly correlated with particle sizes, while the nutrients (TP, SRP) were weak except for TN. The concentrations of organic matter and nutrient were higher at the downstream and the sites nearby the two weirs (MS3, MS6). In particular, the TP concentration at the MS3 site sampled in the second half period of the years was higher than that in the first half periods. Comparing of sediments criteria, the organic matters and nutrients were evaluated to have almost no toxic effects at all sites.
Keywords
Yeongsan River; Sediments; Organic matters; TN; TP;
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