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吸烟与肺癌等病有关是由于吸入了烟草烟雾中所存在的一氧化碳、尼古丁、焦油、苯酚和氰化物等有害物质。人们暴露于这些有害物质的水平随各人吸烟习惯及吸烟的类型而不同。硫氢酸盐(SCN)是烟草烟雾中氰化物在体内的主要代谢产物,有较长的生物半衰期(约7天)。在大部份有关吸烟的
Smoking is related to diseases such as lung cancer due to the inhalation of harmful substances such as carbon monoxide, nicotine, tar, phenol and cyanide that are present in tobacco smoke. The level of exposure to these harmful substances varies according to each person’s smoking habits and the type of smoking. Sulfuric acid salt (SCN) is the main metabolite of cyanide in tobacco smoke and has a long biological half-life (about 7 days). Most of the smoking related