查干湖沉积物水界面钨的空间分布及污染特征

Spatial Distribution and Pollution Characteristics of Tungsten at the Sediment Water Interface in the Chagan Lake

选取松嫩平原第四纪冰川堆积区内查干湖为研究对象,利用薄膜扩散梯度技术获取不同点位沉积物-水界面钨的原位高分辨信息,探讨了钨的空间分布及污染特征。结果表明:查干湖各点位钨在上覆水的含量大于在沉积物中含量;采用地累积指数评价法对查干湖各点位钨的污染程度进行分析,发现查干湖沉积物各点位目前未受到钨污染。

The Chagan Lake in the Quaternary glacial deposit area of the Songnen Plain was selected as the research object,and the in-situ high-resolution information of Tungsten at the sediment water interface at different points was obtained by using the diffusive gradients in thin films technique,and the spatial distribution and pollution characteristics of Tungsten were discussed.The results show that the content of Tungsten in the overlying water was higher than that in the sediment at each site of the Chagan Lake.The pollution index of Tungsten in the Chagan Lake was analyzed by using the geo accumulation index evaluation model.It was found that the pollution index of each site in the Chagan Lake sediment was not polluted by Tungsten at present.