| 北京市城市污水雌激素活性的研究 |
| 摘要点击 4597 全文点击 5553 投稿时间：2009-01-04 修订日期：2009-03-30 |
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| 中文关键词 雌激素活性 城市污水 内分泌干扰物 化学分析法 环境风险 |
| 英文关键词 estrogenicity sewage endocrine-disrupting compound chemical analysis environmental risk |
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| 中文摘要 |
| 采用重组酵母雌激素筛检法(YES法)对北京市3个城市污水处理厂工艺流程污水样品的雌激素活性进行了评价，并采用GC/MS分析了样品中8种内分泌干扰物(EDCs)，以进一步阐明城市污水雌激素活性的变化.结果表明，污水处理厂能较好地降低污水雌激素活性，降低率为82.2%～97.0%，但出水仍具有一定的雌激素活性，雌二醇(E2)当量浓度(EEQ)为2.6～16.0 ng/L.GC/MS检测显示，污水处理厂并不能完全去除目标化合物，出水中平均浓度最低的是17α-E2，为13.5 ng/L，最高的是BPA，为106.4 ng/L；出水的雌激素活性主要来自类固醇雌激素.污水厂的出水排放具有潜在的环境风险，在污水处理过程中，应特别关注对类固醇雌激素的去除. |
| 英文摘要 |
| The recombinant yeast estrogen screen (YES) was used to evaluate the estrogenic activities of sewage samples from every step of three sewage treatment plants (STPs) in Beijing，China. Meanwhile，eight target endocrine-disrupting compounds (EDCs) in corresponding sewage samples were simultaneously analyzed by GC/MS system to further elucidate the variations of their estrogenic activities. The results indicated that estrogenic activities could be considerably reduced by STPs with the rate of 82.2%-97.0%. However，they were still detected in the effluent samples with the values of EEQs (expressed as E2 equivalents) 2.6-16.0 ng/L. In addition，STPs could not completely remove the target EDCs according to GC/MS analysis. The average concentration of 17α-E2 in the effluent was the lowest with the value of 13.5 ng/L，and the concentration of BPA (106.4 ng/L) was the largest. The estrogenic activities of effluent samples were mainly composed of steroid estrogens. Consequently，potential environmental risk can be caused by the discharge of effluents from STPs. How to effectively remove steroid estrogens during sewage treatment is，therefore，of a major concern. |
