Rickert W S, Robinson J C, Bray D F, Rogers B, Collishaw N E
Prev Med. 1985 Mar;14(2):226-33. doi: 10.1016/0091-7435(85)90038-6.
Yields of tar, nicotine, and carbon monoxide were compared in selected Canadian brands of manufactured and hand-rolled cigarettes, and small and large cigars. To control for varying volumes of smoke delivery per cigarette or cigar, standardized comparisons in milligrams of toxic substance per liter of smoke were made. The mean deliveries per liter of smoke and tar, nicotine, and carbon monoxide were highest for small cigars, followed by hand-rolled and manufactured cigarettes; large cigars had the lowest deliveries. Five out of six brands of cigarettes handmade from fine-cut tobacco delivered significantly more tar, nicotine, and carbon monoxide per cigarette or per liter than did the identically named manufactured brand.
对加拿大选定品牌的机制卷烟、手卷烟以及小雪茄和大雪茄的焦油、尼古丁和一氧化碳产量进行了比较。为了控制每支香烟或雪茄烟雾输送量的差异，对每升烟雾中有毒物质毫克数进行了标准化比较。每升烟雾中焦油、尼古丁和一氧化碳的平均输送量，小雪茄最高，其次是手卷烟和机制卷烟；大雪茄最低。六个用精细切割烟草手工制作的香烟品牌中，有五个品牌每支香烟或每升烟雾输送的焦油、尼古丁和一氧化碳比同名机制品牌多得多。
