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利用固相萃取/酵母双杂交法调查了哈尔滨市饮用水及周边松花江水的雌激素活性.结果表明,松花江哈尔滨段江水在夏秋两季的雌激素活性[以雌二醇当量(EEQs)计]为528~965 pg.L-1,其中上游水源地水雌激素活性水平较高.自来水厂对雌激素活性的去除率为34.6%~50.5%,整个水处理工艺并不能有效去除源水中的雌激素类物质,致使出厂水仍具有298~718pg.L-1的雌激素活性;自来水厂所采用的3种净水工艺中以混凝沉淀工艺对雌激素活性的去除最为稳定,去除率为11.4%~26.1%,占总去除的32.9%~69.0%,而砂滤与氯消毒工艺出水不稳定,雌激素活性有时较进水有升高现象发生.此外,由于管网配送过程中产生了二次污染,致使管网水雌激素活性较出厂水最高可升高44.9%.7次取样测得哈尔滨市管网水的雌激素活性为347~1 362 pg.L-1,均值为738 pg.L-1.
The estrogenic activities of Harbin drinking water and the surrounding Songhua River water were investigated by solid-phase extraction / yeast two-hybrid method.The results showed that the estrogenic activity of the Songjiang River water in the summer and autumn in Songhuajiang River [EEQs] ] Of 528-965 pg.L-1, of which, the level of water estrogen activity in the upstream water source was higher.The removal rate of estrogen activity in waterworks was 34.6% -50.5%, and the whole water treatment process could not effectively remove the source water Of estrogenic substances, resulting in ex-factory water still has estrogenic activity of 298 ~ 718pg.L-1; tap water plant using three kinds of water purification process to coagulation sedimentation process to remove the most stable estrogen activity, removal rate 11.4% ~ 26.1%, accounting for 32.9% ~ 69.0% of the total removal, while the sand filtration and chlorine disinfection process effluent instability, estrogen activity sometimes higher than water into the phenomenon occurs.In addition, due to the pipeline distribution process Secondary pollution, resulting in water pipe network water estrogen activity up to 44.9% higher than the factory water .7 sampling times measured in Harbin pipe water estrogen activity of 347 ~ 1 362 pg.L-1, an average of 738 pg.L-1.