大沽河潮坪沉积的金属元素地球化学特征及环境意义  

THE GEOCHEMICAL CHARACTERISTICS AND ENVIRONMENTAL SIGNIFICANCE OF METAL ELEMENTS IN CORE SEDIMENT OF TIDAL FLAT OF DAGU RIVER

作　　者：韩宗珠[1] 邹昊[1] 李安龙[1] 王磊[1] 

机构地区：[1]中国海洋大学,山东青岛266100

出　　处：《海洋湖沼通报》2010年第4期117-123,共7页Transactions of Oceanology and Limnology

摘　　要：研究了大沽河潮坪沉积(柱状样)金属元素含量的垂向变化,表明沉积物环境质量总体变化不大,但大多数元素都反映出了向上富集的特征。采用因子分析方法对柱状样金属元素进行分析,提取了4个主因子占据样本信息量的81.46%,以此定量判别了金属元素的来源。应用地质累积指数法对柱状样沉积物进行污染评价,结果显示柱样沉积物主要受Cu、Zn和As的污染,但污染程度很低,沉积物环境质量较好。The vertical distribution of metal elements in core sediment of tidal flat of Dagu River shows that the overall changes of the quality of the environment are not dramatic,but most of the metal elements reflect the characteristics of upward enrichment.Factor analysis is used to analyze the metal elements in the core.Four factors are extracted with the occupation of 81.46% of the total information.It helps to quantitatively analyze the sources of metal elements.Contamination assessment of the core sediment is made with the help of Index of Geo-accumulation and the result shows that the core sediment is slightly contaminated by Cu,Zn,and As and the environmental quality of the sediment is pretty good.

关 键 词：大沽河 潮坪沉积 金属元素 污染评价 

分 类 号：P595[天文地球—地球化学] P736.4[天文地球—地质学]