Impact of Redox Condition on Fractionation and Bioaccessibility of Arsenic in Arsenic-Contaminated Soils Remediated by Iron Amendments: A Long-Term Experiment

Figure 1

The fractions of As in iron grit amended and unamended soils at different time under the anoxic condition ((a) , (b) ; —water soluble fraction, —exchangeable fraction, —loosely adsorbed fraction, —strongly adsorbed and organically bound fraction, —Fe and Mn/Al oxides bound fraction, and —residual fraction).

(a)

(b)