The concentration of three heavy metals (Cd, Pb, and Mn) had been known in TPA ponds sediment Muara Fajar Pekanbaru. Pond sediment samples were taken of four TPA ponds in pre-monsoon season (June 7, 2013) and brought to ...

The illegal gold mining at the district of Kuantan Singingi resulted the presence of dangerous heavymetalsin liquid waste in the riverof Kuantan Singingi. The aim of this study was to determine the contamination level of ...