甲醛是吸烟等氧化过程中的重要产物之一。近年来关于甲醛在主烟流、次烟流及吸烟环境中的浓度,曾有9次不同的报道。本文对这些报道结果进行了回顾和综合分析。在各次报道中,由于所采用的测定方法不同,得到的甲醛浓度结果不尽一致。即使采用相同的测定方法,由于烟草种类及香烟商标不同,所测得的甲醛水平也有很大差异,其中以吸无滤嘴烟时产生的甲醛浓度为最高(见表)。表中数据以每支烟产生10个烟团,每个烟团35ml计算。经过浓度单位换算,室内吸烟环境中甲醛平均浓度为0.012～0.085ppm,这样的甲醛浓度不足构成对被动吸烟者人体的危害。吸烟者暴露于主烟流中的甲醛浓度较高,平均为1.5～19.5ppm。每天吸烟量为20支者,累积甲醛暴露量为188～3282μg,相当 Formaldehyde is one of the important products in the oxidation process such as smoking. In recent years, there have been nine different reports on the concentrations of formaldehyde in the main smoke stream, sub-smoke stream and smoking environment. In this paper, the results of these reports were reviewed and analyzed. In each report, due to the different measurement methods used, the concentration of formaldehyde obtained results are not consistent. Even with the same assay, the level of formaldehyde measured varies widely depending on the type of tobacco and the brand name of the cigarette, with the highest concentration of formaldehyde being drawn without filter smoke (see table). The data in the table produces 10 cigarettes per cigarette and 35 ml for each cigarette. After the concentration unit conversion, the indoor average concentration of formaldehyde in the smoking environment is 0.012 ~ 0.085ppm, such a concentration of formaldehyde pose a passive body of the dangers of smokers. Formaldehyde concentrations in smokers exposed to the main smoke were high, averaging 1.5 to 19.5 ppm. 20 cigarettes a day, cumulative formaldehyde exposure 188 ~ 3282μg, quite