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http://dx.doi.org/10.5322/JESI.2021.30.6.487

Geochemical Characteristics and Pollution Assessment of Surface Sediments in the Nakdong River Estuary  

Jeon, Hye-Lyn (Nakdong River Environment Research Center, National Institute of Environmental Research)
Lee, Hye-Yun (Nakdong River Environment Research Center, National Institute of Environmental Research)
Yang, Deuk-Seok (Nakdong River Environment Research Center, National Institute of Environmental Research)
Kim, Shin (Nakdong River Environment Research Center, National Institute of Environmental Research)
Publication Information
Journal of Environmental Science International / v.30, no.6, 2021 , pp. 487-500 More about this Journal
Abstract
To evaluate the geochemical characteristics and assess the pollution in surface sediments of the Nakdong River estuary, two sites adjacent to the estuary bank (Hh1 and Hh2) and one site at the upper part of the estuary bank (Hh3) were investigated. The surface sediments were analyzed for their contents of metals (Cu, Pb, Ni, Cr, Zn, and Al), organic matter (IL, COD, TOC, and TN), and grain size from 2018 to 2020. As a result of the pollution assessment, there was little anthropogenic contamination by most of the metals. The surface sediments in Hh2 had comparatively abundant silt and clay, whereas the other sites were mainly composed of sand. The organic index and contents of organic matter were highest at Hh2. Multivariate statistical analyses (cluster analysis and Pearson correlation analysis) showed that the contents of organic matter and pollution were associated with fine sediment. These results suggest that the geochemical characteristics were changed by the estuary bank built in the research area and that the increase in fine sediment attributable to the low-energy environment resulted in an increase in organic matter pollution.
Keywords
Nakdong River estuary; Surface sediments; Pollution assessment; Metals; Grain size; Organic matter;
Citations & Related Records
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