在人口密集的城市,尤其在烟囱林立的工厂区,空气中飘浮着大量的粉尘,对人类健康显然是不利的。空气里所含的粉尘,种类繁多,但可分为有机和无机物两大类。有机粉尘中的植物性粉尘如棉、麻、茶、术屑、米粉、炭末、中药材和萎、藕、山芋、豆类制成的淀粉等;动物性粉尘如兽皮、兽毛、角质、羽绒、毛 In densely populated cities, especially in factory areas with chimneys, large amounts of dust floating in the air are obviously unfavorable to human health. Dust contained in the air, a wide range, but can be divided into two categories of organic and inorganic. Organic dust in plant dust such as cotton, hemp, tea, surgery debris, rice noodles, charcoal, Chinese herbal medicine and wilting, lotus root, potato, beans made of starch; animal dust such as animal skins, animal hair, , Down, hair