Evaluation of Heavy Metals in Waters Influenced by Mining in the Poopó and Antequera River Basins, Oruro – Bolivia
A study of heavy metals in surface and groundwater was conducted in Poopó and Antequera River basins in Bolivia. Problems with high levels of heavy metals in waters on the Bolivian high plateau have been known for many years and are to a great extent the cause of the mining industry in the region. In this study, ten sampling sites of surface waters and twelve observation wells monitoring the groun