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以表面活性剂ＴＷ８０为供试物，进行了为期１５０ｄ的实验研究，并分别在３０、６０和１５０ｄ间隔采样监测ＰＡＨｓ降解率．结果表明，３０ｄ后，土壤中ＰＡＨｓ的降解率达９０％，比对照提高约３０％．６０ｄ后，浓度为１００００ｍｇ·ｋｇ－１表面活性剂的土壤和对照中，ＰＡＨｓ降解率从６５．１％和６０％迅速提高到９３．８％和７９．２％．其它处理中，ＰＡＨｓ的平均降解率仅比３０ｄ的结果提高４％．１５０ｄ后，所有处理中ＰＡＨｓ的降解率均达到９０％以上．可以认为，表面活性剂能提高ＰＡＨｓ的生物可利用性，加快ＰＡＨｓ的降解速率，从而减少污染暴露时间．但表面活性剂浓度过高可抑制微生物活性．研究还发现，ＴＷ８０土壤中含有优势真菌．经鉴定为常见青霉、蠕形青霉、淡紫青霉和顶孢头孢霉．它们是土壤ＰＡＨｓ迅速降解的动因
TW80 with surfactant as the test substance, conducted a 150d experimental study, respectively, and 30,60 and 150d sampling interval monitoring PAHs degradation rate. The results showed that after 30 days, the degradation rate of PAHs in soil reached 90%, which was about 30% higher than the control. After 60 days, the degradation rate of PAHs increased rapidly from 65.1% and 60% to 93.8% and 79.2% in soil and control with the concentration of 10000mg · kg-1 surfactant. In other treatments, the average degradation rate of PAHs was only 4% higher than that of 30 days. After 150 days, the degradation rate of PAHs in all treatments reached more than 90%. It is believed that surfactants can increase the bioavailability of PAHs and accelerate the degradation rate of PAHs, thus reducing the exposure time of pollution. However, the high surfactant concentration can inhibit the activity of microorganisms. The study also found that TW 80 soil contains the dominant fungi. Identified as a common Penicillium, Penicillium funiculosum, Penicillium and Acremonium. They are the cause of rapid degradation of soil PAHs