Based on the results of the study, the concentrations
of As, Cd and Pb in shoots of giant reed grown on amended soil were significantly increased. Positive effects of middle level of AA on enhancing concentrations of As and Cd and high level on Pb in giant reed shoots were shown (Fig. 2). CA addition treatment with low and high level could significantly increase As and Cd concentration in giant reed. Similarly, the concentrations of As, Cd and Pb with low level of sepiolite were significantly increased by 2.18, 3.31 and 8.37 times as compared with that in the controls, respectively, while they were not increased with increasing addition level of sepiolite. The reason might be contributed to the large surface area as well as the strong adsorptive capacity of sepiolite [27]. Accumulations of As and Cd were significantly enhanced by 0.603.31 times and 1.423.42 times when treated