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Spatial Variability and Contents of Metals in the Surficial Sediments of Youngil Bay, East Coast of Korea  

Um, I.K. (Polar Research Lab. korea Ocean Research and Development Institute)
Lee, M.K. (Global Environment Research Lab. Korea Ocean Research and Development Institute)
Jeon, S.K. (Global Environment Research Lab. Korea Ocean Research and Development Institute)
Jung, H.S (Global Environment Research Lab. Korea Ocean Research and Development Institute)
Lim, D.I. (Global Environment Research Lab. Korea Ocean Research and Development Institute)
Publication Information
Journal of the Korean earth science society / v.24, no.5, 2003 , pp. 477-490 More about this Journal
Abstract
Bottom sediments from Youngil Bay, East Coast of Korea, were analyzed for grain composition as well as elemental compositions and total organic carbon (TOC) content in order to investigate the spatial variability and content of metal elements. Grain size distribution of the sediments seems to be controlled by anticlockwise current pattern with bottom topography of the study area. Spatial variability of TOC and all elemental contents reflects those of grain size, but an exception was found in the harbor area (Old-Port): their contents are high in the central part of the bay with the muddy sediment and decrease toward the sand-dominated coastal zone. However, contents of Ca, Sr, K are high in the sand-dominated coastal zone and contents of some heavy metals (Cd, Cu, Zn) are high in the Old-Port area and the mouth of Hyeongsan River. The correlation matrix and R-mode factor analyses reveal that four important factors controlling the distribution of metals in the bay are sediment grain size (or quartz dilution effect), the formation of sulfide minerals associated with decomposition of organic matters under anoxic geochemical environment, calcium carbonate (mainly shell fragments) and coarse-grained feldspar mineral. According to the metal content of labile fraction an CER (concentration enrichment ratio) value, high accumulation of some heavy metals in the harbor area seems to result not formed by early diagenetic processes under anoxic environment.
Keywords
Elemental compositions; R-mode factor analysis; CER; sulfide minerals; Youngil Bay;
Citations & Related Records
Times Cited By KSCI : 2  (Citation Analysis)
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