香烟的焦油和尼古丁含量有变化吗？
Have tar and nicotine yields of cigarettes changed?
作者信息
Kozlowski L T, Rickert W S, Robinson J C, Grunberg N E
出版信息
Science. 1980 Sep 26;209(4464):1550-1. doi: 10.1126/science.7433979.
PMID:7433979
Abstract
In official assays of the tar and nicotine yields of 12 popular brands of cigarettes, smoking machines took fewer puffs, on the average, in 1974 than in 1969. The decline in puffs appears to have been a major cause of the reported reductions in tar and nicotine yields during this period.
摘要
在对12个畅销香烟品牌的焦油和尼古丁产量进行的官方检测中，1974年吸烟机平均抽吸的口数比1969年减少。抽吸口数的下降似乎是这一时期报告的焦油和尼古丁产量降低的主要原因。
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