摘要:
对太湖典型湖区水体中的胶体态痕量金属进行了定量分析.结果表明,太湖春季水体中胶体态Cu,Zn,Pb,Fe,Mn和Cd的浓度分别为0.46-0.86μg·l-1,2.06-8.24μg·l-1,2.62-3.70μg·l-1,3.48-24.79μg·l-1,0.31-1.62μg·l-1和6.71-17.94ng·l-1,平均分别占各自总溶解态(<1μm)的22.3%,26.3%,20·7%,58.9%,40.4%和59.2%,而胶体态Cu,Pb,Fe,Mn和Cd平均分别占各自总量的17.4%,19.1%,55.1%,1.98%和52.8%.
Abstract:
Colloidal trace metals in the waters of lake Taihu were analyzed quantitatively. Results showed that contents of colloidal trace metals in lake Taihu were 0.46-0.86μg·l-1(22.3%)of the totally dissolved partition for Cu, 2.06-8.24μg·l-1(26.3%)for Zn, 2.62-3.70μg·l-1(20.7%)for Pb, 3.48-24.79μg·l-1(58.9%)for Fe, 0.31-1.62μg·l-1(40.4%)for Mn and 6.71-17.94ng·l-1(59.2%)for Cd. And averagely, the colloidal Cu, Pb, Fe, Mn, and Cd occupied 17.4%, 19.1%, 55.1%, 1.98% and 52.8% of their total contents in lake water respectively.