【摘要】 污泥引起的环境污染问题已经引起了广泛关注.本研究应用SOS/Umu生物毒性测试方法评价了北京市18个污水处理厂的生污泥样品以及经过不同处理工艺处理后的11个污泥样品的遗传毒性效应.结果表明,生污泥在最高暴露浓度相当于2.5mg干土·孔-1时,均未检出直接遗传毒性效应,加入S9代谢活化后,样品S1疑似间接遗传毒性效应;处理后的污泥样品在最高暴露浓度相当于20mg干土·孔-1时,G10有疑似直接遗传毒性效应,且经S9代谢活化后表现出间接遗传毒性效应;G11表现出间接遗传毒性效应.SOS/Umu生物毒性测试方法能够快速、准确地对污泥遗传毒性以及处理工艺的处理效果进行评价.更多还原

【Abstract】 Environmental contamination caused by sewage sludge has aroused great concern.This study adopted sewage sludge samples from 18 sewage treatment plants in Beijing and 11 sewage sludge samples disposed by different treatment to assess genotoxicity by SOS/Umu test.After exposing to a given amount of extract(corresponding to 2.5 mg·well-1),none of them showed positive response.The sample S1 showed suspected indirect genotoxicity;After exposing to a given amount of extract(corresponding to 20 mg·well-1),The sample G10 showed suspected direct genotoxicity and positive indirect genotoxicity;The sample G11showed positive indirect genotoxicity.SOS /Umu test can be used for evaluating genotoxicity of sludge and the efficiency of different treatment quickly and accurately.更多还原