锦州湾沉积物芯样中重金属污染及变化动态

研究了锦州湾海域底质沉积物中重金属（Zn，Pb，Cd，Fe，Mn）的含量分布，并以一个代表性的水平剖面和一个垂直剖面（J06号芯样）分析了重金属含量变化动态。通过回归计算得出几种金属在水平距离上的变化方程；在分析该湾沉积理化环境基础上，探讨了重金属地球化学相的垂向含量变化，Fe、Mn二元素的垂直剖面的成岩演变。认为沉积物中金属元素释放出来而污染上覆海水，最后得出该湾金属的污染程度及环境现状的结论。

VARIATION IN HEAVY METAL POLLUTION OF OFFSHORE SEDIMENTARY CORES IN JINZHOU BAY

The distributive regularity of heavy metal(Zn,Pb,Cd,Fe and Mn) contents in sediments from Jinzhou Bay and its polluted date have been studied using Tessisr's procedure in the paper.The Variation in the metal contents of sediments along a veritical profile and a horizontal profile from tidal flat to bay mouth was investigated.The horizontal variable equations of the metal contents with distance(L) for sediments were established by regression compute.In addition,based on the sedimentary cirumstances of the characteristics of physicol-chemical factors,the vertical changes of heavy metal geochemical phases,the vertical evolution for mineralization of Fe and Mn elements and the potentiality of poiluting overlying seawater by heavy metals from sedimentary cores were described.Finally,the pollution level and environmental situation in the sedimentary cores of Jinzhou Bay was discussed.