目的了解黄河兰州段及其一级支流水体中环境激素的分布，追溯环境激素的来源和污染途径。
Objective to assess the level of environmental hormone (EH) in Lanzhou reach of the Yellow River and to find the pollutant sources and pollution routes.
强化一级处理，可以提高城市污水中污染物的去除率。
The intensified first level treatment will enhance the removal rate of the pollutants in urban sewage water.
豆类、瓜类、茄果类、食用菌类样品中硝酸盐没有超过一级标准的，污染较轻。
Nitrate in leguminous, melon and nightshade vegetable was below the level I, which indicated that these vegetable were slightly polluted.
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