Wei Chen, Morrison Gregory M
a Department of Sanitary Engineering , Chalmers University of Technology , S-412 96 , Göteborg , Sweden.
Environ Technol. 1993 Nov;14(11):1057-1064. doi: 10.1080/09593339309385382.
Metals were analysed in the interstitial waters and sediments of an urban river, receiving stormwater and combined sewer overflow, over a two month period and interpreted in terms of rain events. Depth profiles for metal concentrations showed the highest interstitial water concentrations in samples with low sedimentary organic material. Storm events can both resuspend sediments and associated metal-rich interstitial waters and alter the metal distribution between interstitial water and sediment. Metal profiles downstream of a combined sewer overflow showed elevated interstitial water concentrations compared to an upstream site. Downstream sites also reveal evidence of metal burial and resuspension processes during and between wet periods.
在两个月的时间里，对一条接收雨水和混合下水道溢流的城市河流的间隙水和沉积物中的金属进行了分析，并根据降雨事件进行了解释。金属浓度的深度剖面显示，沉积有机物质含量低的样品中间隙水浓度最高。暴雨事件既能使沉积物和富含金属的间隙水重新悬浮，又能改变间隙水和沉积物之间的金属分布。与上游站点相比，混合下水道溢流下游的金属剖面显示间隙水浓度升高。下游站点还揭示了湿润期期间和之间金属埋藏和重新悬浮过程的证据。
