地表水和自来水中环境雌激素活性物质的检测

Determination of Environmental Estrogens in Surface Water and Tap Water

目的了解我国地表水和自来水的环境雌激素污染情况。方法应用本实验室构建的基因重组酵母检测系统,对用H103大孔吸附树脂吸附的水样富集物进行环境雌激素活性检测。结果本次所检测的50%的地表水样和25%的自来水样检出环境雌激素活性物质,一些水源水活性较高,其水样富集物有显著的剂量-效应关系,仅100ml水样富集物即呈现阳性反应。结论我国的一些地表水中已受到环境雌激素类物质的污染,而现行的城市自来水处理系统不能有效地去除水源水中环境雌激素活性物质,致使城市自来水中也含有环境雌激素活性物质。

Objective To understand the environmental estrogens contamination of tap water and source water. Methods Environmental estrogens in the water samples were concentrated by macroporous adsorption resin H103. The effect of environmental estrogens in concentrated samples was assessed by the recombinant yeast system. Results The results showed that some source water and tap water really contained environmental estrogens. The activity of environmental estrogens in concentrated samples of some source water increased as the volume of concentrated sample increased. The concentrate of 100 ml water sample could show the estrogenic effect. Conclusion Some source waters and tap waters in China have been contaminated by environmental estrogens. Environmental estrogens in source water can not be removed completely by drinking water treatment system of city.