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在许多受污染的地下水中,主要污染物是有机物,特别是石油类物质。石油是一种复杂的多组份混合物,其中的许多组份被美、日、德等国列为环境中应优先控制的潜在危险性大的有毒污染物,即优先污染物(Priority Pollutants)。
In many contaminated groundwater, the main pollutants are organic matter, especially petroleum. Petroleum is a complex multi-component mixture, many of which are listed in the United States, Japan, Germany and other countries as priority should be given priority to control the potentially hazardous toxic pollutants, namely Priority Pollutants.