Environmental, ecological and human health risk assessment for Ba, Cr, Zn and V in minesoil after 20 years of restoration in southern Brazil

Heavy metals are a persistent threat in soils formed after mining (minesoils). This study was conducted in a 20-year randomized complete block design experiment installed within an active coal mine in Candiota, southern Brazil. Thus, this work provides a unique opportunity to assess long-term environmental and human health risks as affected by consistent and well-documented minesoil restoration practices. We aimed to assess the concentration of heavy metals (Zn, V, Ba, and Cr) in topsoil layers