【摘要】 对鸭绿江口不同地区表层沉积物的生源要素和重金属元素分布特征进行了分析;评价了河口地区生源要素与重金属的污染情况。结果表明,鸭绿江河口地区表层沉积物中生源要素污染情况比较严重。相比之下,重金属污染程度较轻,重金属中Cu的污染状况相对较重;最大混浊带的细颗粒物对生源要素和重金属都有较强的吸附作用。生源要素和重金属元素的分布特征和评价结果表明,河流断面的污染程度大于潮滩断面和毗邻浅海断面,河口地区的生源要素主要来源于河流输送和近岸生活、生产活动,重金属元素主要来源于鸭绿江的径流输送。更多还原

【Abstract】 The distribution characteristics of biogenic elements and heavy metals in different areas of Yalu River estuary were analyzed in this paper,base on which,the contaminative conditions of biogenic elements and heavy metals in estuary was evaluated.The results indicated that the pollution of biogenic elements was heavier in the surface sediment of Yalu River estuary.In contrast,the pollution of heavy metals was lighter,the contaminative condition of Cu was relatively serious among heavy metals;The fine particles of maximum turbidity zone had strong adsorption to biogenic elements and heavy metals;The evaluation results of biogenic elements and heavy metals showed that the contaminative degree of river segments was bigger than that of tidal flat segments and adjacent shallow sea segments, the biogenic elements mainly came from the river transport and offshore life,production activities,the heavy metals mainly came from runoff delivery of Yalu River.更多还原