Phytoremediation of Gold Mine Tailings Amended with Iron-Coated and Uncoated Rice Husk Ash by Vetiver Grass (Vetiveria zizanioides (Linn.) Nash)

Figure 6

The uptake of As, Cd, Cr, Cu, Mn, Zn, and Pb (μg plant⁻¹) in shoot of vetiver grass grown in gold mine amended with Fe-RHA and RHA (mean , ±SD). Different letters correspond to significant differences between rates of the same ash (). Pb was not detected.

(a)

(b)