摘要
本文报告了 16种国产香烟和 4种外烟中的2 10 Po含量 ,同时还报告了吸烟过程中2 10 Po在烟蒂、烟灰和吸入烟雾等部分的分配情况。本实验采用的是2 10 Po自沉积法 ,使用了低温灰化装置和标准模拟吸烟装置。本文给出了我国整支香烟中2 10 Po含量范围 ,其值为 13 .7～ 43 .4mBq/支或 18.0～ 67.3mBq/克。平均值为 2 6.5mBq/支或 3 3 .7mBq/克。国产香烟2 10 Po含量一般高于国外水平。香烟焦油含量和烟型对2 10 Po含量没有影响 ,有的高档香烟中2 10 Po含量较高。本文还给出了香烟中各部分2 10 Po含量范围。其中过滤嘴香烟的烟蒂与烟灰中2 10 Po含量为整支香烟2 10 Po含量的 40 % ;非过滤嘴香烟为 60 %。过滤嘴与非过滤嘴的吸入烟雾中2 10 Po占整支烟总量的百分率没有什么差别 ,约为 15 %。根据香烟中2 10 Po含量还估算了吸烟者从香烟烟雾中摄入的2 10 Po量为 80mBq/天 ,由此估算了其对人体肺组织所致年剂量当量为 0 .46mSv。
The contents of Poionium-210 in 16 brands of cigarettes from China and 4 brands of cigarettes from abroad were reported.The method we used for separating Polonium-210 was electrochemical deposition method.The 210 Po contents were analyzed in whole cigarettes from freshly opened packs.The 210 Po contents of the China-made cigarettes ranged from 13.7 to 43.4 mBq/cig,from 18.0 to 67.3 mBq/g respectivily,the mean values were 26.5 mBq/cig and 33.7 mBq/g respectively.The content of 210 Po in cigarettes from China is higher than that from abroad. The polonium contents of the ash,butt and main stream smoke were reported.The cigarettes were smoked with the eight-channel smoking machine for determining the concentration of the radionuclides in main stream smoke.('Main Stream' means smoke taken into the mouth).About 15% of 210 Po contained in a cigarette was transferred into the main stream smoke,40% of the whole 210 Po content remained in the ash and butt for filter cigarette,60% for nonfilter. The daily intake of the 210 Po from cigarette was 80mBq,the annual dose equivalent to the lung tissue of human body was 0.46 mSv.In view of present knowledge,it is improbable that this dose is significant for the higher incidence of lung cancer in smokers.
出处
《中国辐射卫生》
2000年第3期129-133,共5页
Chinese Journal of Radiological Health
关键词
钋-210
香烟
摄入量
肺组织剂量当量
Polonium-210
cigarette
intake
dose equivalent to the lung tissue
