Abstract
The concentrations of Mn in water and sediments of different functional areas in Lake Baiyangdian were monitored in representative months from 2009 to 2010. The results showed that the concentration of Mn had spatial-temporal distribution characteristics. Mn in the overlying water ranged from 0.05 to 2.39 mgL-1, and was higher in May and October than that in August and March. Sites in the fish-rearing zone had the highest Mn concentration, while natural site had the lowest Mn concentration. The concentration of Mn in the surface of sediments ranged from 144.95 to 1317.04 mgkg-1. The concentration of Mn was higher in March than in other months. Sites in the duck-rearing zone had the highest Mn concentration, while garbage dumping site had the lowest Mn concentration. Human activity such as aquaculture had an obvious effect on the concentration of Mn in Lake Baiyangdian.
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