8Chlopecka A, Adriano D C. 1997. Influence of zeolite, apatite and Feoxide on Cd and Pb uptake by crops [ J ]. The science of the Total Environment, 207 : 195-206.
9Chen G C, He Z L, Stoffella P J, et al. 2006. Leaching potential of heavy metals (Cd, Ni, Pb, Cu and Zn) from acidic sandy soil amended with dolomite phosphate rock ( DPR ) fertilizers [J]. Journal of Trace Elements in Medicine and Biology, 20 : 127-133.