摘要
通过室内模拟实验，建立了无风及有风条件下砷等五种大气重金属在湖水表面微层的迁移模型，由五种大气重金属的沉降速率，可以预测这些重金属在湖泊表面微层中的平均停留时间和浓度．其平均停留时间为３．０～８．５ｈ；预测浓度的顺序为Ｚｎ＞Ｃｕ＞Ｐｂ＞Ａｓ＞Ｃｄ，各值与现场实测值吻合良好．观测了微层中生物对五种重金属浓度的影响．
A model is derived from laboratory experiment studies. It can be used to predict mean residence times and concentrations of the heavy metals in the lake water surface microlayer from deposition rates of five atmospheric heavy metals. The mean residence time is 3.0￣8.5h. Predicted concentrations are Zn>Cu>Pb>As>Cd. These predicted concentrations agree well with the corresponding concentrations measured in the field. Influence of organisms in the microlayer on the concentrations are observed.
出处
《南开大学学报（自然科学版）》
CAS
CSCD
北大核心
1999年第1期119-123,共5页
Acta Scientiarum Naturalium Universitatis Nankaiensis
