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烟草对土壤中所含的放射性元素有浓集作用,所以烟叶中放射性元素的含量,要比在同样土壤里种植的一般农作物高100倍以上。其中有针-210、铅-210和镭-226等放射性元素。据报导,我国某地产的烟叶每公斤含针-210约2.5-8.1×10~(-10)居里,铅-210约10.3×10~(-9)居里,镭-226约4.8-8.7×10~(-11)居里。当香烟点燃以后,这些放射性物质就随着烟雾进入人的呼吸器官和消化
Tobacco has a concentration effect on the radioactive elements contained in the soil, so the content of radioactive elements in the tobacco leaves is more than 100 times higher than that of ordinary crops grown in the same soil. Among them needle -210, lead -210 and radium -226 and other radioactive elements. According to the report, the yield of tobacco in a real estate in China is about 2.5-8.1 × 10 -10 (-10) per kilogram of tobacco, about 10.3 × 10 -9 in lead-210, about 4.8-8.7 in radium-226 × 10 ~ (-11) Curie. When cigarettes light up, these radioactive substances follow the smoke into the human respiratory organs and digestion