This paper summarizes parts of the results from a sampling campaign conducted along a mining region recipient, the Vormbäcken River, in northern Sweden during 1999 and 2000. Surface water from seven stations along the river, and the effluent water from an active mine, were sampled on six occasions. On two of these occasions, additional samples were collected both from the river and its major tributaries. Applying a catchment perspective, special emphasis was given to identify sources and potential sinks to different metals (Zn, Cu, Cd, Ca, and As) encountered in the river water. Base parameters such as pH, total organic carbon (TOC), and SO42- were also investigated. The aim of the selected approach was both to quantify the importance of natural immobilization processes occurring in wetlands and a lake along the river, as a basis for a further development within the field of passive treatment of acid rock drainage (ARD), and to point at issues within the catchment area that can be dealt with to improve the overall water quality.
2001. 777-786 p.