Figure 5
From: Nanoremediation of As and metals polluted soils by means of graphene oxide nanoparticles

Influence of nZVI (A) and nGOx (B) on the available concentrations of As in the As-polluted soil (A). For each column, different letters in different samples indicate significant differences (n = 3, ANOVA; P < 0.05). Error bars represent standard deviation.