摘要
距今50年左右,天然气迫使美国绝大多数人工煤气厂倒闭,而将一桶桶焦油和其它污染物就地埋存。据悉焦油中有许多化合物为致癌物。如今,隐藏于地下已数十年之久的有毒物质引发了一场耗资巨大且十分复杂的清除工作。
Some chemicals in coal tar that are found nowadays to be carcinogens and had been buried under the surface by MGPs in US for decades are triggering costly and complicated cleanups.
出处
《城市公用事业》
2002年第2期41-44,共4页
Public Utilities
