焦化作业接触多种有害物质,如煤粉、烟灰、SO2、CO及氮氧化物。焦炉逸散物中烟灰重量约占25%～40%,其中焦油成份中含有苯并(a)芘等多环芳烃化合物,大量流调资料证实,后者与焦炉工人肺癌高发率有关,焦炉工肺癌在我国已列为职业肿瘤。近年膜毒理学理论认为许多化学毒物都可加剧体 Coking operations expose to a variety of hazardous materials such as coal dust, soot, SO2, CO and nitrogen oxides. Coke oven fly ash in the weight of about 25% to 40%, of which tar components contain benzene (a) pyrene and other polycyclic aromatic compounds, a large number of flow control data confirmed that the latter with the high incidence of lung cancer in coke oven workers, Coke oven workers lung cancer in our country has been classified as occupation. In recent years, the theory of membrane toxicology that many chemical poisons can exacerbate the body