湖南浏阳是盛产烟花、鞭炮之乡,有悠久的历史。但生产方式比较落后,主要是手工和半机械化生产,在生产过程中有大量的粉尘产生,工人的劳动条件很差。经常吸入大量烟灰粉尘。为了排除肺内的粉尘,工人中流传着喝生茶油祛除肺内粉尘的传统习惯。这种做法是没学科学根据的。事实上,进人呼吸道的粉尘是通过呼吸系统的防御功能和吞噬细胞的吞噬作用来清除的。我们知道,鼻腔里长着纤毛,当含有粉尘的空气进人鼻腔后,大于10微米的粉尘颗粒便被鼻纤毛阻挡,不能进人气管。在一般情况下,空气经过鼻腔,能滤除空气中30～50%的粉尘。进人气管和支气管的粉尘还会被气管壁上的粘液粘附和被管壁上的纤毛过滤和推赶,随着肺部的呼吸运动,从流出的鼻涕和咳出的痰液被排出 Hunan Liuyang is rich in fireworks, firecrackers town, has a long history. However, the mode of production is relatively backward, mainly by hand and semi-mechanized production. In the production process, there is a lot of dust generated, and workers’ working conditions are very poor. Often inhaled a lot of soot dust. In order to rule out the dust in the lungs, the traditional practice of drinking raw tea oil to get rid of dust in the lungs is circulated among workers. This practice is not based on science. In fact, dust entering the respiratory tract is cleared by the respiratory defense and the phagocytosis of phagocytes. We know that the cilia in the nasal cavity, when the air containing dust into the nasal cavity, more than 10 microns of dust particles will be blocked by nasal cilia, can not enter the trachea. Under normal circumstances, the air through the nasal cavity, can filter out 30% to 50% of the dust in the air. Dust entering the trachea and bronchi is also filtered and pushed by mucus on the tracheal wall and cilia on the wall of the trachea to be expelled from the runny nose and coughing sputum as the lungs breathe