CAJ | 학술논문

沉积物重金属污染对水生生态系统具有潜在危害。对取自三门湾的10个表层沉积物中的重金属（Cu、Ph、zn、cd、Hg、cr、As）元素进行了分析，探讨了其空间分布，运用Hakanson潜在生态危害指数法，评价了表层沉积物中重金属的富集程度和潜在生态风险。结果表明：三门湾表层沉积物中Cu、Pb、zn、Cd、№、cr、As等重金属含量分布无明显规律；7种重金属中，以cr的污染程度最高，平均污染系数为1．30，重金属污染程度由高到低依次是：Cr〉zn〉cu〉Pb〉As〉Hg〉Cd；潜在生态危害评价显示，重金属元素的潜在生态危害均属轻微，潜在生态危害程度顺序是Hg〉Cd〉As〉Cu〉Pb〉Cr〉Zn，对三门湾生态环境具有潜在影响的重金属元素主要是Hg。
침적물중금속오염대수생생태계통구유잠재위해。대취자삼문만적10개표층침적물중적중금속（Cu、Ph、zn、cd、Hg、cr、As）원소진행료분석，탐토료기공간분포，운용Hakanson잠재생태위해지수법，평개료표층침적물중중금속적부집정도화잠재생태풍험。결과표명：삼문만표층침적물중Cu、Pb、zn、Cd、№、cr、As등중금속함량분포무명현규률；7충중금속중，이cr적오염정도최고，평균오염계수위1．30，중금속오염정도유고도저의차시：Cr〉zn〉cu〉Pb〉As〉Hg〉Cd；잠재생태위해평개현시，중금속원소적잠재생태위해균속경미，잠재생태위해정도순서시Hg〉Cd〉As〉Cu〉Pb〉Cr〉Zn，대삼문만생태배경구유잠재영향적중금속원소주요시Hg。
Heavy metal contamination in surface sediment is harmful to the aquatic ecosystem. In this study, 10 surface sediment samples from Sanmen Bay were collected and analyzed for heavy metals such as Cu, Pb, Zn, Cd, Hg, Cr and As, on an attempt to illustrate their distribution in the fishing harbor, and to assess their accu- mulation levels and potential ecological risks, using Potential Ecological Index（RI） methods. The result showed that the contents of all these heavy metals appear no apparent rule. Among all these heavy metals, the pollution of Cr was most serious with the pollution index 1.30. The pollution degree of these heavy metals in surface sediments followed the order： Cr〉Zn〉Cu〉Pb〉As〉Hg〉Cd. The potential ecological risk of the heavy metals in this area belonged to light. The potential ecological risk of these heavy metals in surface sediments of Sanmen Bay was Hg〉Cd〉As〉Cu〉Pb〉Cr〉 Zn. Hg was the potential impact element for the ecological environment of Sanmen Bay.