CAJ | 학술논문

研究了三沙湾沉积物重金属的分布和污染情况，分别使用了主成分分析（PCA）、富集因子分析和潜在生态风险指数法对研究区域沉积物中重金属的来源、富集水平和生态风险这3个方面进行了探讨。主成分分析的分析将调查海域沉积物中金属元素分为自然来源和人为来源2类。其中Cu、Pb、Zn、Cd、Cr、Hg、As 和 Ni 均为人为来源，该来源可能与沿岸的人类活动有关。富集因子法的分析结果表明，研究区域 As、Ni、Cd、Cr、Pb、Cu、Zn、Hg 处于低富集状态。这说明该地区由工业活动所导致重金属污染还处于初级阶段，其污染状况的发展需要及时关注。潜在生态风险指数法分析结果表明，研究区域80％站位（1、2、3、4、5、6、7、9、10、11、12和14）处于中等污染的生态风险水平，沉积物中 Hg、Cd、As 和 Ni 为主要生态危害的重金属元素。
연구료삼사만침적물중금속적분포화오염정황，분별사용료주성분분석（PCA）、부집인자분석화잠재생태풍험지수법대연구구역침적물중중금속적래원、부집수평화생태풍험저3개방면진행료탐토。주성분분석적분석장조사해역침적물중금속원소분위자연래원화인위래원2류。기중Cu、Pb、Zn、Cd、Cr、Hg、As 화 Ni 균위인위래원，해래원가능여연안적인류활동유관。부집인자법적분석결과표명，연구구역 As、Ni、Cd、Cr、Pb、Cu、Zn、Hg 처우저부집상태。저설명해지구유공업활동소도치중금속오염환처우초급계단，기오염상황적발전수요급시관주。잠재생태풍험지수법분석결과표명，연구구역80％참위（1、2、3、4、5、6、7、9、10、11、12화14）처우중등오염적생태풍험수평，침적물중 Hg、Cd、As 화 Ni 위주요생태위해적중금속원소。
The distribution and contamination of heavy metals were analyzed in the surface sediments of Sansha Bay. Principal component analysis (PCA),enrichment factor (EF)and ecological risk index (RI)were used to study the sources,enrichment levels and ecological risk of heavy metals.The results of PCA analysis divided the sources of heavy metals into natural factor and anthropogenic factors.Cu,Pb,Zn,Cd,Cr,Hg,As and Ni belonged to the anthropogenic factor,which could be mainly due to the human activities along the coastal areas.The analysis of EF revealed that Ar,Ni,Cd,Cr,Pb,Cu,Zn and Hg were minor enrichment.It showed that the contamination of heavy metals in surface sediments were rather low and its developments should be monitored.The results of RI showed that 80% of sites (1,2,3,4,5,6,7,9,10,11,12 and 14)were in the state of moderate risk ecologi-cally.Hg,Cd,As and Ni were the most important heavy metals by their RI values.