The contents of volatile phenol, petroleum hydrocarbons and benzo (a) pyrene in the polluted soil have remarkable linearity relationships with their contents in A. chinensis grown on the soil.

• 污染羊草中的挥发酚、石油烃和苯并[a]花3种污染物的残留量与土壤中的质量分数之间有着显著的线性关系。