生物降解三氯乙烯的研究及其进展

三氯乙烯（ＴＣＥ）的大规模使用，已使其成为地表水、地下水中分布最广泛的污染物之一。ＴＣＥ在环境中具有持久性，对生物的毒作用很强并具有致癌性，引起各国的普遍重视。该文综述了近年来生物降解转化ＴＣＥ的研究及其进展，由于ＴＣＥ生物降解过程中共代谢物的竞争性抑制和ＴＣＥ代谢毒性，使ＴＣＥ的降解受到很大限制，但通过创造和保持适当的环境条件，可ＴＣＥ降解取得很好的效果。

Study and Progress of Trichloroethylene Biodegradation

Large scale usage of trichloroethylene (TCE) has become one of the pollutants which most extensively distributed in surface and ground waters. Because of its persistency, high toxicity and carcinogenesis, a great attention is being paid all over the world. A review on study and progress of biodegradation and biotransformation of TCE was presented. Owing to the competitive inhibition of co-substrates and the metabolic toxicity in the process of biodegradation, biodegradation of TCE is greatly restricted, but it will be well degradated and transformed under the optimum environmental conditions.