上海市原水及地表水中SEs调查及风险评估

Survey and Risk Assessment of Steroid Estrogens in Source Water and Surface Water in Shanghai

利用SPE—HPLC法调查了上海市原水及地表水中甾体雌激素（SEs）的含量分布情况，同时，将雌二醇当量（EEQcal）转换为壬基酚当量，采用德国建议的环境质量标准和美国的水质标准对水体中SEs的污染状况进行了风险评估。结果表明，上海市原水及地表水中的SEs含量为0～0．10μg／L，雌激素活性（以EEQcal计）为0—0．50μg/L。其中，上海市境内原水与地表水中的SEs雌激素活性水平较高，目前亟需展开控制与去除SEs的技术研究，以保障饮用水的安全。

The distribution of steroid estrogens （SEs） in source water and surface water in Shang- hai was investigated using solid phase extraction-high performance liquid chromatograph. Estradiol equiv- alent quantity （EEQcal） was converted to nonylphenol equivalent quantity （NEQ）, and risk assessment of water samples was performed based on German environmental quality standard and USEPA＇ s water cri- teria for SEs. The results showed that the SEs contents in Shanghai＇ s source water and surface water were 0 to 0.10 μLg/L, and the estrogenic activity （ calculated as EEQcal ） was 0 to 0.50 μg/L. Due to high level of the estrogenic activity, studies on SEs control technology should be urgently carried out to ensure drinking water safety.