완도 지역 전복 양식장 주변 표층퇴적물을 대상으로 퇴적물의 입도, 총유기탄소(TOC), 중금속(Fe, Li, Cu, Zn, Pb, Cd, Cr, As, Ni, Hg) 분포와 조절요인을 분석하고, 생태학적 위험성을 평가하였다. 퇴적물은 주로 실트와 점토로 구성되었으며 일부 지역에서는 모래와 자갈이 혼합된 퇴적물이 확인되었다. TOC 함량은 평균입도와 높은 상관성을 보였으며, 평균값은 0.76%로 나타나 양식 과정에서 발생한 유기물과의 연관성을 제시하였다. 퇴적물 내 Ni, Cd, Zn, Cu는 양식장 활동 및 유기물 축적의 영향을 받으며, Cd는 가장 높은 농축을 보임 으로써 주요 오염원으로 확인되었다. 특히, Cd의 축적은 잔류 해조류 침전과 CaCO3 침전 과정에서 치환작용과 연관이 있는 것으로 해석 되었다. 생태학적 위해도 평가에서는 연구지역 대부분이 중간 위험 수준으로 나타났으며, Cd는 주요 생태학적 위해 요인으로 확인되었다.

Abalone (Haliotis discus hannai) is a shellfish that feeds on kelp and, as a product, it can often achieve a high market value. However, the dissolved oxygen (DO) levels in coastal waters in Korea have been negatively impacted by pollution from many anthropogenic sources. Herein, a computational fluid dynamics (CFD) software package was used to analyze the distribution of the DO concentration within an abalone containment structure. A finite volume approach was used to solve the Reynolds-averaged Navier–Stokes equations combined with a k–ε turbulence model to describe the flow. The distribution of DO was determined within the control volume domain, and the transport equations of the pollutants were interpreted using a CFD model. The CFD analysis revealed that more than 60% and 30% of the relative oxygen concentration in one and two containers, respectively, was maintained when the flow acts along the six sheets of polyethylene plates. Therefore, it is clear that the abalone plate shelters should be placed parallel to the flow.

We measured the grain size and metallics elements (Li, V, Cr, Mn, Fe, Co, Ni, Cu, Zn, Cd, Hg, Pb, Fe and As) of surface sediments collected from 27 sampling sites in the Abalone aquaculture. The concentration range and average value of metallics elements were also below the sediment quality guidelines (TEL). As the pollution level was estimated by using enrichment factor (Ef) and index of geoaccumulation (Igeo), the enrichment factor (Ef) was about 1 for most of metallic elements were smaller than 1. However Arsenic (As) had highest value of 2.35. Index of geoaccumulation (Igeo) for the metallic elements (As, Pb and Mn) were ranged Igeo-class 0 (practically unpolluted) and most metallics elements (Li, V, Cr, Fe, Co, Ni, Cu, Zn, Cd, Hg and Fe) were ranged Igeo-class 0~2, indicating that the pollution levels of metallic elements should not be significant. It is necessary to keep monitoring pollution level in Abalone aquaculture to conserve the blue belt.