摘要
利用1984年夏季的现场调查,作者研究了黄河口及邻近海域表层沉积物中铜的地球化学形式。含量及其分布,分析了铜和有机质、铁、锰、锌及中值粒径之间关系,并指出总铜平均含量为20.4mg/kg.其中残渣部分占55％,有机结合铜为19.4％、Fe-Mn氧化物结合铜为12.1％、碳酸盐结合铜为13.1％,可交换铜的含量小于1％。此外讨论了沉积物中各种形式铜含量与铁、锰、有机质及中值粒径关系。
The content and distribution of copper in the surface sediments at 35 stations in the Huanghe River Estuary and its neighbouring sea areas were investigated in July 1984. Higher content of copper in sediment occurs in the northwest and southwest of the investigated areas.There are positive correlations between the content of Cu and the contents of organic matter, Fe, Mn, Zn and Mdφ in the sediments. The single correlation coefficients are:The atom ratio of Cu and Fe, Mn, Zn elements is:The geochemical forms and distributions of Cu in the sediments were also studied. It was divided into five forms: exchangeable (Cu(E)), Carbonate-bound (Cu)), Fe-Mn oxide-bound (Cu(H)),Orgaic-bouud (Cu(O)) and residual fractions (Cu(R)).of the total copper, the exchangeable copper is lesst then 1% the . carbonate-bound copper is 13 .1 %, the Fe-Mn oxide-bound copper is 12 .1 % , the organicbound copper is 19.4% and the residual fractions coppe is 55 .01 %, respectively, the average value of total Cu is 20 .4 mg/kg.The partial correlations of Cu and Fe, Mn, Organic matter, Mdφ in the four geochemical forms of sediments are as follows: Form Partial correlation coefficient
