The low-molecular-weight organic acids secreted by plant roots boost the mobility of heavy metals through formation of soluble complexes in the soil rhizosphere.In this paper,the influence of organic and amino acids including citric,tartic,oxalic,succinic acids,which are present in the soil rhizosphere,on the solibility of Pb,Zn,Cd,Cu from soils polluted by lead-zinc mine tailing and drainage was investigated. It was observed that the activated impact of organic and amino acids with the concerntration of 16 mmol/L on Pb,Zn,Cd,Cu in contaminated soils was strong and citric,tartic,oxalic acids w...
