Fig. 3From: Bioaccumulation of potentially toxic elements by indigenous and exotic trees growing around a copper leaching plant in Mufulira, ZambiaConcentration of PTEs in tree bark and leaves, n = 10. The different letters indicate mean significant differences at 5% of significance between species. B.L: B. longifolia, E.C: E. camaldulensis and E.G: E. grandis. The error bars represent the standard error of the meanBack to article page