【摘要】 <正> 黄河口输出的泥沙对渤海沉积物。特别是对渤海西南部沉积作用产生极大影响。为了判断近期沉积物中某些重金属含量有无异常,或是否受到污染,有必要对该区表层沉积物中重金属的地球化学过程进行研究。本文讨论了该区表层沉积物中铜、锌、铁、锰有机质等含量及分布变化规律。更多还原

【Abstract】 The contents of Zn, Fe, Mn, Cu, Organic matter and Mdφ of surface sediments of the Yellow River Estuary and its neighbouring sea areas were measured in July 1984 at 35 stations. The contents of Zn range from 46--128 mg/kg, Cu range from 10. 7--34. 5mg/kg, Fe range from 1. 8--3. 3% and Mn range from 252--620 mg/kg. The higher contents of Zn, Cu, Mn, and organic matter in sediments occur in the estuarine and coastal areas. The Cu, Fe, Mn, Zn and organic matter in sedi- ments had clear similar distribution. There are positive correlations between their contents, The correlation coefficients are as follows: r_Zn--Org=0. 704 r_Cu--Org=0. 720 r_Zn--Fe=0. 858 r_Cu--Fe=0. 849 r_Zn--Mn=0. 802 r_Cu--Mn=0. 711 r_Zn--Cu=0. 945 The Cu, Zn, Fe, Mn contents and Mdφ in surface sediments were clearly corre- lated, the correlation coefficients are as follows: r_Cu--Mdφ=0. 929 r_Zn--Mdφ=0. 906 r_Fe--Mdφ=0. 734 r_Mn--Mdφ=0. 821更多还原