非法棄置成份複雜，其可能同時含有機污染物及重金屬，本研究以生物泥漿法評估重金屬對多環芳香烴fluoranthene 之生物降解影響，並以線蟲、Microtox 、Ames test 測試污染土壤前後之生物毒生。土壤添加400mg/kg 銅或20mg/kg 鎘，不會抑制fluoranthene生物降解，fluoranthene 降解情形與fluoranthene 分解菌及總菌數密度無關。Ames test 結果指出，處理後之土壤對TA98 之突變量增加，但對TA100 之致突變量減少。處理前後之受重金屬及fluoranthene 污染土壤對線蟲Caenorhabditis Elegans 24 小時毒性測試，皆不具急毒性。
Illegal dumping sites contained a variety of contaminants including organic compounds and heavy metals. Bioslurry reactor was used to assess effects of heavy metals on the biodegradation of fluoranthene. Furthermore, a battery of bioassay, including nematode, Microtox test, and Ames test were used to evaluate the toxicity of soil before and after treatment. Soil containing 400 mg/kg of copper or 20mg of cadmium did not inhibit the biodegradation of fluoranthene. The biodegradation rate was not related to either the density of fluoranthene degrader or the total bacterium density. The results of Ames test indicated that mutagenicity of treated soil was higher than untreated soil when TA98 was used to evaluate the mutagenicity. However, the results of TA100 showed that bioslurry treatment lowered the mutagenicity of fluoranthene-contaminated soil. The 24 hour toxicity tests indicated that the contaminated soil were not acute toxic to the nematode, Caenorhabditis Elegans.
