重要有机氯杀虫杀菌剂的生物降解

The biodegradation of several organochlorine pesticides

高毒、高残留、难降解的有机氯农药严重威胁到人类健康。修复由它们造成的环境问题已迫在眉睫。目前,滴滴涕(1,1,1-trichloro-2,2-bis(p-chloro-phenyl)ethane,DDT)微生物降解方面的研究集中在降解菌株分离及代谢途径研究,六六六(hexachlorocyclohexane,HCH)微生物降解的分子基础已研究得比较清楚,以此为依据,本文概述了五氯硝基苯(pentachloronitrobenzene,PCNB)的生物降解的国内外研究进展,并提出在分子水平研究其生物降解的重要性。

Because of the properties of higher toxicity, higher residue and harder biodegradation, the OCP is harmful for the health of the human beings. Therefore, it is necessary to repair the polluted environment resulted in by OCP. Nowadays, there are many researches on the isolation strains and biodegradation pathway of 1,1,1-trichloro-2,2-bis（p-chloro-phenyl）ethane （DDT）; it has been made more clearly that the molecular basis of microbial degradation on hexachlorocyclohexane （HCH）. We reviewed the development of PCNB pollution and biodegradation. Furthermore, the importance of PCNB biodegradation by molecular biological technologies was emphasized in the paper.