CAJ | 학술논문

测定了燕尾港近岸海域表层沉积物中重金属的含量，运用地累积指数就其污染程度进行了分析与评价。结果表明Cu、Zn、Pb、Cd、Cr、As、Ni、Mn的平均含量分别为20．2，264，54．0，1．52，69．8，38．8，35．7，684 mg/kg。Cu、Zn、Pb、Cr、As的平均含量低于国家海洋沉积物质量标准的二级标准值，重金属Cd的平均值高于国家海洋沉积物质量标准的二级标准值；地累积指数评价结果表明，Cd在调查海域污染程度重，7种重金属的污染程度依次为Cd＞ As＞ Pb＞Zn＞Cr＞Ni＞Cu。对结果进行主成分分析和聚类分析后发现，前2个主成分的贡献率分别为62．41％、12．52％，表明此海域表层沉积物中重金属的主要来源是工业废水和农业灌溉水的排放及大气沉降。
측정료연미항근안해역표층침적물중중금속적함량，운용지루적지수취기오염정도진행료분석여평개。결과표명Cu、Zn、Pb、Cd、Cr、As、Ni、Mn적평균함량분별위20．2，264，54．0，1．52，69．8，38．8，35．7，684 mg/kg。Cu、Zn、Pb、Cr、As적평균함량저우국가해양침적물질량표준적이급표준치，중금속Cd적평균치고우국가해양침적물질량표준적이급표준치；지루적지수평개결과표명，Cd재조사해역오염정도중，7충중금속적오염정도의차위Cd＞ As＞ Pb＞Zn＞Cr＞Ni＞Cu。대결과진행주성분분석화취류분석후발현，전2개주성분적공헌솔분별위62．41％、12．52％，표명차해역표층침적물중중금속적주요래원시공업폐수화농업관개수적배방급대기침강。
Heavy metal (Cu ,Zn ,Pb ,Cd ,Cr ,As ,Ni ,and Mn) concentrations and geo-accumulation index (Igeo) were determined in surface sediments in Yanwei harbor to understand the pollution status of the study area based on the background values .Results showed that the average concentrations (mg/kg) in the surface sediments were found to be 20 .2 for Cu ,264 for Zn ,54 .0 for Pb ,1 .52 for Cd ,69 .8 for Cr , 38 .8 for As ,35 .7 for Ni ,and 684 for Mn ,the contents of Cu ,Zn ,Pb ,Cr ,and As being within the relevant national standard in terms of heavy metal contamination ,and Cd being beyond the standard .The gIgeo revealed that there was Cd contamination in the entire study area ,with a descending order as Cd>As>Pb>Zn> Cr> Ni> Cu .Principal component analysis (PCA ) and cluster analysis showed that the heavy metal contamination was derived from industrial effluent ,agricultural wastewater and atmospheric sedimentation ,the former two accounting for 62 .41% ,and 12 .52% ,of the total variance .