单词	benzopyrene
释义	benzopyrene /ˌbɛnzə(ʊ)ˈpʌɪriːn / noun [mass noun] Chemistry A compound which is the major carcinogen present in cigarette smoke, and also occurs in coal tar. A polycyclic aromatic hydrocarbon; chemical formula: C20H12. Wood fires can also release benzopyrene, a carcinogen that can irritate your eyes, nose, throat, and lungs.... Researchers estimated that every day the average infant under the age of two in urban America ingested 110 nanograms of benzopyrene, equivalent to smoking three cigarettes a day. NER is the main mechanism used to remove pyrimidine dimers induced by UV cross-linking or chemical damage such as those caused by benzopyrene, aflatoxin, and cisplatin.
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