Fig. 1

The bioavailability of Pb (a) and Cd (b) in soil after remediation with different species and doses of nonmetallic minerals (AT: Attapulgite, SP: Sepiolite, AP: Apatite, LS: Limestone; the control group (CK) was not treated with any mineral materials). The different letters indicate significant differences at p < 0.05 (Duncan’s test).