污染水体重金属化学稳定性的研究

Study on Chemical Stability of Heavy Metals in the Xiangjiang River.

本文采用湘江霞湾重金属污染江段沉积物及其相应体系,模拟实验研究了在静态和动态条件下沉积物中重金属的释放量及释放规律,获得了在50—150d的模拟实验期间沉积物中重金属的释放速率及相关系数,同时讨论了不同水环境条件对污染沉积物中重金属化学稳定性的影响。

In order to evaluate the chemical stability of heavy metals in the polluted river, a series of static and dvnamic simulated experiments under different conditions has been performed with the sediment samples collected at S1-S5 sections in the Xiangjiang River. The content of metals and their releasing rates from sediments were obtained in the model experiment, and then the process of chemical transformation and transfer between sediment and water were discussed. The results showed that heavy metals in the River revealed higher chemical stability and their releasing contents in the polluted sediments were very limited.