尼古丁本身通常并非有意添加,而是存在于精制或混制的烟叶当中,但氨水是一种大范围使用的添加物──每年的使用量多达数百万磅──目的是让尼古丁分子从“束缚态变为“自由态,形成一种类似毒品效果的尼古叮添加乙口丙酸的目的也差不多,是为了增强尼古丁控制脑部的效率。添加可可不但能够增香,而且也有扩张支气管的作用:可可含有可可硷,有助于扩张肺部,“接收香烟的烟雾。
Of course, whenever you smoke a cigarette you are also smoking cigarette paper, which contains bleaches and glues and sometimes burn accelerants (typically sodium or potassium citrates). Chemicals are added to adjust the color of the ash or the optical qualities of the smoke.
当然,你在抽烟时,同时也在吸入烟纸的成分,其含有漂白剂和胶水,有时还含有促进剂(一般为钠或柠檬酸钾)。此外,还有一些加入的化合物是用于调整烟灰的颜色或烟雾的视觉效果的。
The archives are also full of complaints from ordinary smokers finding oddities in their cigarettes: A 1994 Philip Morris document records contamination from rubber bands, machine belts and lubricants, ink and tax stamp solvents, glass fibers and plastics, and color stains 'consistent with blood.' Smokers also complain about finding bugs or worms, sometimes dead, sometimes alive.
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