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http://dx.doi.org/10.7837/kosomes.2020.26.4.392

Pollution Status of Surface Sediment in Jinju Bay, a Spraying Shellfish Farming Area, Korea  

Lee, Garam (Marine Environment Research Division, National Institute of Fisheries Science)
Hwang, Hyunjin (Marine Environment Research Division, National Institute of Fisheries Science)
Kim, Jeong Bae (Marine Environment Research Division, National Institute of Fisheries Science)
Hwang, Dong-Woon (Marine Environment Research Division, National Institute of Fisheries Science)
Publication Information
Journal of the Korean Society of Marine Environment & Safety / v.26, no.4, 2020 , pp. 392-402 More about this Journal
Abstract
We investigated the concentrations of acid volatile sulfide (AVS), ignition loss (IL), total organic carbon (TOC), total nitrogen (TN), and metallic elements (As, Cd, Cr, Cu, Fe, Hg, Mn, Pb, and Zn), in August 2015, to determine the spatial distribution and pollution status of organic matter and metals in the surface sediment of Jinju Bay, a spraying shellfish farming area, Korea. The concentrations of organic matter and metallic elements were significantly higher in the southern part of the bay than in the mouth and center of the bay. The C/N ratio (5.7~8.0) in the sediment represents the dominance of organic matter of oceanic origin in the surface sediment of the study area. The concentrations of AVS, TOC, and metals (As, Cd, Cr, Cu, Hg, Pb, and Zn) were much lower than the values of the sediment quality guidelines applied in Korea. Based on the results of the pollution load index (PLI) and ecological risk index (ERI), the metal concentrations in the surface sediment of Jinju Bay have a weakly negative ecological effect on benthic organisms although the sediments with high metal pollution status are distributed in the southern parts of the bay, with high dense shellfish farming areas. Thus, the surface sediments in Jinju Bay are not polluted with organic matter and are slightly polluted with metallic elements.
Keywords
Sediment; Organic matter; Metallic element; Pollution; Jinju Bay;
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