Citric acid was effective at removing Pb, Cd and Mn in the contaminated soil, the maximal removal reached 66.70% of Pb, 53.85% of Cd and 52.23% of Mn, and could apply in remedying Xiangtan manganese mine contaminated tailing soils for its low price.

• 柠檬酸对土壤中的Pb、Cd、Mn的萃取能力强，对3种重金属的最大去除率分别达到：66.；70%25Pb、53