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http://dx.doi.org/10.5657/kfas.2006.39.2.106

Distribution of Organic Matters and Metallic Elements in the Surface Sediments of Masan Harbor, Korea  

Hwang Dong-Woon (Marine Environmental Management Team, Headquarter for Marine Environment Department, NFRDI)
Jin Hyun-Gook (Marine Environmental Management Team, Headquarter for Marine Environment Department, NFRDI)
Kim Seong-Soo (Marine Environmental Management Team, Headquarter for Marine Environment Department, NFRDI)
Kim Jung-Dae (Marine Environmental Management Team, Headquarter for Marine Environment Department, NFRDI)
Park Jong-Soo (Marine Environmental Management Team, Headquarter for Marine Environment Department, NFRDI)
Kim Seong-Gil (Marine Environmental Management Team, Headquarter for Marine Environment Department, NFRDI)
Publication Information
Korean Journal of Fisheries and Aquatic Sciences / v.39, no.2, 2006 , pp. 106-117 More about this Journal
Abstract
We measured the concentrations of organic matter and metallic elements (Al, Fe, Cr, Mn, Ni, Cu, Zn, As, Cd, Pb and Hg) in the surface sediments of Masan Harbor (in the southern sea, Korea) to evaluate the geochemical characters of sediment and the pollutions by organic matter and metallic elements. The mean grain size of the surface sediments in the study area ranged from $5.6{\phi}$ to $7.8{\phi}$, indicating silt sediment. The water content of the surface sediments exceeded 60% except at some stations. The contents of ignition loss (IL), total organic carbon (TOC) and total nitrogen (TN) ranged from 7.2-14.3%, 1.2-3.2%, and 0.10-0.28%, respectively. Based on the C/N ratios, the organic matter in the surface sediments of Masan Harbor may originate from terrigenous sources including fluvial inputs (mainly sewage in urban areas). The chemical oxygen demand (COD) and acid volatile sulfide (AVS) ranged from $11.3-29.9\;mgO_2/g\;dry$ and 0.20-4.47 mgS/g dry, respectively, and low concentrations were observed near a shipping route. In addition, the concentrations of metallic elements showed large spatial variations in Masan Harbor and the distributions of metallic elements were also comparable to those of organic matter. This implies that the distributions of organic matter and metallic elements in the surface sediments of Masan Harbor are mainly controlled by biogenic matter and artificial action (mainly dredging). In addition, we calculated the enrichment facto. (EF) and geoaccumulation index (Igeo) in order to evaluate pollution by metallic elements. The enrichment of metallic elements relative to Al was three to eighteen times higher at the study sites, compared to levels in the Earth's crust except for Fe, Ni and Mn. In addition, the Igeo class indicated that the surface sediments in the study area were moderately to strongly polluted in terms of metallic elements.
Keywords
Masan Harbor; Sediment; Metal; Enrichment factor; Geoaccumulation index;
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