Evolution in time of soil heavy metals contamination in Zlatna region, Romania

摘要

Soil pollution with heavy metals is a current problem with serious consequences on health. Heavy metals in small quantities are needed for all vital forms. In the organism cells, metals are presented as cations, but their inclusion is strictly regulated because, in large quantities, they are toxic. This paper aims to determine the soil pollution with heavy metals in eleven points of Zlatna area, in two different periods of time: 2004 and 2012. The results show a heavy metals content (lead, copper and cadmium) exceeding the limits set by European legislation. In the mean time, the need of a strategic rehabilitation of Ampoi Valley Basin was highlighted, given the fact that in 2004 the activity of copper smelter plant had been stopped.