Karst groundwater in the Niangziguan spring fields is main source to supply domestic and industrial water demands Yangquan City, China. However, safety of this region has recently suffered from deteriorating quality levels. Therefore, identifying pollution sources causes crucial for maintaining a reliable supply. In study, systematic sample collection karst was implemented identify hydrochemica...

Illegal gold mining is on the rise in tropical Andes. The Santiago-Cayapas watershed located north of Pacific basin Ecuador, Chocó biogeographical region. It recognized for its high biodiversity, as 62 fish species have been described area, and because it contains two largest protected areas coast Ecuador: mangroves Cayapas Mataje Rivers Cotacachi-Cayapas Ecological Reserve. Open-pit has area s...

Abandoned mines have a double nature consisting of resources and assets, their rational redevelopment is one the most important practices recycling economy. To direct layout regional abandoned mine redevelopment, this paper constructs comprehensive assessment framework for potential based on driving force–state–response (DSR) model. It quantitatively evaluated by three-dimensional cloud models,...

Abandoned mines are sources of potentially toxic chemical elements, although the development these objects was completed. The Lupikko I mine area (Karelia Republic, Russia) is an excellent example such technogenic objects. It one largest in Pitkäranta area, which abandoned more than hundred years ago. dump rocks here characterized by significant mineral diversity. Disseminated ore mineralizatio...

Concentrations of total mercury (Hg(T)), methylmercury (MeHg), and its speciation in water samples as well as fish collected from abandoned Hg mines in Wanshan, Guizhou province, China, were measured to show regional dispersion of Hg contaminations that are not well known. High Hg(T) and MeHg(T) (total methylmercury) concentrations obtained in waters from mining areas, ranged from 15 to 9300 ng...