吸烟对室内空气细颗粒物浓度的影响研究

Influence of Smoking on Indoor AirFine Particle Concentration

为了解吸烟对室内大气颗粒物浓度的影响,使用激光尘埃粒子计数器对整个吸烟过程(吸烟前,吸烟中,吸烟后)的粒子数浓度进行了测定。结果表明:吸烟过程中会产生大量粒径小于1μm的细颗粒物(PM1)。通过数据分析,单根香烟的颗粒物排放速率为2.74×109个·min-1,所产生的PM1约为1.36×1010个。吸烟结束后,这些细颗粒物会长时间悬浮在室内大气中,难以在短时间内实现自身沉降,而开窗通风后,PM1数浓度会迅速下降。故在室内吸烟时应及时通风,以减少烟草烟雾环境对人体的伤害。

To understand the effect of smoking on indoor airfine particle concentration,this study used a laser dust particle counter to measure the particle concentration of the entire smoking process (before smoking,smoking,and smoking). The results show that a large number of fine particles (PM1) with a particle size of less than 1μm are produced during smoking. Through data analysis,the particulate matter emission rate of a single cigarette was 2.74×10^9·min^-1,and the produced PM1 was about 1.36×10^10. After the end of smoking,these fine particles will be suspended in the indoor atmosphere for a long time,and it is difficult to achieve self-settling in a short time. After the window is ventilated,the concentration of PM1 will decrease rapidly. Therefore,when indoor smoking,it should be ventilated in time to reduce the harm of smoking to the human body.