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被动吸烟与肺癌危险度之间存在怎样的关系,目前尚无定论。有人由被动吸烟者体内的可的宁含量推断被动吸烟者的死亡人数,也有人反对这种“外推法”。本实验证明被动吸烟时摄入的气相组分的量与粒相组分的量之间关系很小,实验如下: 选5名吸烟者与5名不吸烟者,控制饮食并在实验前一天不接触烟草烟雾。实验第一天为模拟实验条件日(假曝露),10名对象在实验室内同处8小时(8∶30～4∶30),在此期间不接触烟草烟雾。第二天与第一天相同。第三天是气相组分曝露日(GP),5名不吸烟者戴上可滤除99%吸入气中颗粒物质的过滤器,8小时
What is the relationship between passive smoking and the risk of lung cancer? It is inconclusive. Some people from passive smokers body cotinine levels inferred passive smoker death toll, some people object to this “extrapolation law.” The experiment proves that the passive cigarette smoke intake of the amount of gas phase component and the relationship between the amount of particulate components is very small, the experiment is as follows: Select 5 smokers and 5 non-smokers to control the diet and the day before the experiment Exposure to tobacco smoke. The first day of the experiment was a day of simulated experiment conditions (false exposure), and 10 subjects were in the laboratory for 8 hours (8:30 to 4:30) with no exposure to tobacco smoke during this period. The next day is the same as the first day. The third day was the gas phase Exposure Date (GP). Five non-smokers wore filters that filtered 99% of the inhaled air. Eight hours