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2.6-16.0ng/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17-αE2,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.
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 17u-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.
出处
《环境科学》
EI
CAS
CSCD
北大核心
2009年第12期3590-3595,共6页
Environmental Science
基金
国家自然科学基金重大国际合作项目(20721140019)
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
estrogenicity
sewage
endocrine-disrupting compound
chemical analysis
environmental risk
作者简介
周海东（1971-），男，博士后，主要研究方向为水污染控制，E-mail：zhouhaidongpku@gmail．com
通讯联系人，E-mail：xhuang@tsinghua．edu．cn
