전자저널 > 전자저널 > Geochemical Characteristics and Heavy Metal Pollutions in the Surface Sediments of Oyster Farms in Goseong Bay, Korea

Geochemical Characteristics and Heavy Metal Pollutions in the Surface Sediments of Oyster Farms in Goseong Bay, Korea

Ju-Hyun Kang, Sang-Jun Lee, Woo-Geon Jeong1 and Sang-Man Cho

Department of Marine biology and Aquaculture & Institute of Marine Industrial Science, Gyeongsang National University, 445 Inpyeong, Tongyoeng, Gyeongnam 650-160, Korea Department of Aquaculture and Aquatic Science, Kunsan National University, 558 Deahak

Goseong bay, located in southeast sea of Korea with an area of 2,100 ha, is a semi-enclosed bay well-known for oyster farming cultured in an extended range of 148 ha. The objective of this study is to provide the fundamental data in order to manage the effective sea area. A total 26 of surface sediment were collected from Goseong bay to evaluate their sedimentary environment and heavy metals. The loss on Ignition (LOI), C/N ratio, acid volatile sulfide (AVS) and heavy metals were analyzed. loss on ignition (LOI) of surface sediment range from 1.00% to 3.03% (average 2.00%). The carbonate content ranges from 0.52% to 4.29% (average 2.37%). C/N ratio of organic matter showed that most part of organic matter comes from neighboring continent. Acid volatile sulfide (AVS) value of surface sediment from 0.02 mg/g to 1.43 mg/g (average 0.24 mg/g). A ten element of surface sediments (Al, As, Cd, Cr, Cu, Hg, Ni, Pb, V, Zn) were calculated by enrichment factor (Ef) and the results show that some areas are highly polluted with respect Cu and Hg. The correlation matrix displays the existence of remarkable levels of correlation with both positive and negative values among different variable pairs. LOI and AVS showed both positive values. LOI and AVS values falls under 2% and 1%. Therefore, Goseong bay showed good in quality of sediment.

v28_3_233-244.pdf (716.2K), Down : 145, 2012-12-07 11:55:21