珠江口海域悬浮物中非晶格金属元素

NON LATTICE METAL ELEMENTS IN SUSPENDED MATTER IN PEARL RIVER ESTUARINE AREA

珠江口海域悬浮物样品经原子吸收分光光度计分析其中Fe,Al,Mn,Zn,Cu,Pb,Co,Ni和Cr九种元素,用数理统计处理,探讨局部区域金属元素分布的异常。悬浮物中各种金属元素在河口的分布和迁移过程主要有絮凝、吸附、解吸和沉淀等。悬浮物的成分差异很大程度影响着金属元素的浓度,当悬浮物的有机成分增加,金属元素的含量也随之增加。

102 suspended particulate matter sampl s were taken from Pearl River Es-tuarine area during the flood and low water periods of 1986. The dried and weighed SPM samples were leached with 0.5mol/L HCl, and Fc, Al, Mn, Zn, Cu, Pb, Co, Ni and Cr Were determined by AAS. In this paper the distribution anomaly of metal elements in a part of the area was studied by statistical method. The results demonstrate that the distributions and transport of metal elements of SPM in the estuarine area are mainly flocculation, adsorption, desorption and precipitation, etc. The composition of SPM has a great effect on the concentration of metal elements. The concentration of metal elements increases as organic constituent of SPM increases.