This is the first study investigating the effect of cationic surfactants on the mobility of polycyclic aromatic hydrocarbons (PAHs) in aged contaminated soils and on PAH bioaccumulation in tuberous vegetables. In an aerobic soil incubation experiment, 150 mg/kg cetyltrimethyl ammonium bromide (CTMAB) decreased the bioavailability of PAHs primarily via immobilization (by 13%). In a carrot pot experiment, the effectiveness of CTMAB to reduce PAH uptake by carrots decreased with time. Accordingly, the bioavailability of PAHs in the soil decreased in the first 90 days and then increased and remained stable until harvest. In the leaching test, the leaching loss of CTMAB (15%) was lower in soils treated with small amounts of CTMAB in several applications than it was in soils (24%) treated once with CTMAB. Therefore, CTMAB, when applied in appropriate doses via addition methods, can effectively reduce the environmental risk of PAH entering humans and livestock through the food chain.

这是第一个研究阳离子表面活性剂对老化的污染土壤中多环芳烃（PAHs）迁移率以及块茎类蔬菜中PAH生物积累的影响的研究。在需氧土壤培养实验中，150 mg / kg的十六烷基三甲基溴化十六烷基溴化铵（CTMAB）主要通过固定化降低了PAHs的生物利用度（降低了13％）。在胡萝卜罐实验中，CTMAB减少胡萝卜对PAH吸收的有效性随时间降低。因此，土壤中PAHs的生物利用度在开始的90天内下降，然后增加并保持稳定直至收获。在浸出试验中，在几次施用中用少量CTMAB处理过的土壤中，CTMAB的浸出损失较低（15％），比用CTMAB处理过的土壤中（24％）要低。因此，CTMAB