After 90d mixing with soil, with treatment of Pb(NO3)2 and PbO, the proportion occupied by Pb2+ could be high reaching 75.23%, and related with lowering of pH value and DOC content of the soil solution.

• 与土壤混合90d后；Pb(NO3)2和PbO处理下Pb2+所占比例可高达75.；23%25；这可能与土壤溶液pH值和DOC含量降低有关