The State of Marine Pollution in the Waters adjacent to Shipyards in Korea - 2. Assessment of the Pollution of Heavy Metals in Seawater around Major Shipyards in Summer 2010

서지정보

· 발행기관 : 해양환경안전학회
· 수록지 정보 : 해양환경안전학회지 / 21권 / 1호 / 9 ~ 17페이지
· 저자명 : 김광수

초록

In order to elucidate the current state of marine pollution of heavy metals around major shipyards in Korea, seawater samples were collected at eleven sampling stations and four control stations around 4 major shipyards located in the southeastern coast of Korea in summer 2010, and 6 kinds of metals such as copper(Cu), zinc(Zn), iron(Fe), cadmium(Cd), lead(Pb) and mercury(Hg) in seawater samples were analyzed. The analyses of heavy metals in seawater showed that the mean Cu concentrations in seawater around 4 major shipyards were in the range of 0.817～1.638㎍/L which were lower than Korean environmental standards of 20㎍/L for the protection of human health(PHH) and of 3㎍/L for short-term protection of marine ecosystem(SPME) but higher than Cu concentration at control station by a factor of up to 2.75. The mean Zn concentrations were in the range of 0.228～0.567㎍/L which were lower than Korean environmental standards of 100㎍/L for PHH and 34㎍/L for SPME but higher than Zn concentration at control station by a factor of up to 5.91. The mean Fe concentrations were in the range of 3.332～7.410㎍/L which were higher than Fe concentration at control station by a factor of up to 6.75. The mean Cd concentrations were in the range of 0.013～0.028㎍/L which were lower than Korean environmental standards of 10㎍/L for PHH and 19㎍/L for SPME but higher than Cd concentration at control station by a factor of up to 2.33. The mean Pb concentrations were in the range of 0.007～0.126㎍/L which were lower than Korean environmental standards of 50㎍/L for PHH and 7.6㎍/L for SPME. The mean Hg concentrations were in the range of 0.002～0.004㎍/L which were lower than Korean environmental standards of 0.5㎍/L for PHH and 1.8㎍/L for SPME. Although the concentrations of metals such as Cu, Zn and Fe which were used in shipbuilding works were lower than Korean environmental standards for PHH and SPME, the fact that the concentrations of Cu, Zn and Fe at sampling stations around major shipyards were higher than those at control stations implies that the works in shipyards had some effects on marine water quality around shipyards. Therefore, marine environment management such as the prevention and control of the discharge of various pollutants from shipyards is required on national level.

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