电子烟抽吸过程中释放的超细颗粒物对室内环境影响研究

Impact of ultrafine particles released by electroniccigarettes on indoor environment

目的评估电子烟释放的烟雾对室内环境的影响。方法测量室内电子烟抽吸过程中释放的颗粒物及挥发性有机物(VOCs)的浓度变化,利用数值模型评估不同粒径的超细颗粒物在人体呼吸道中的沉积情况。结果电子烟抽吸过程中会产生大量的超细颗粒物,其最高浓度可达1.52×10^(11)个/m^(3),是室内背景值浓度的21.6倍。抽吸结束半小时后,PM_(0.1)的浓度仍高出室内背景值8倍。人体呼吸道沉积模型计算结果表明,超细颗粒物可大量沉积于人体肺泡中。结论室内电子烟抽吸会明显增加空气中超细颗粒物的浓度,应加强对电子烟使用的管理,特别是在室内公共环境中。

Objective To understand the impact of smoke released by electronic cigarettes on indoor environment.Methods The concentrations of particulate matter and volatile organic compounds(VOCs)released during indoor electronic cigarette smoking were determined,and used numerical models to evaluate the deposition of ultrafine particles(PM_(0.1))of different sizes in the human respiratory tract.Results The experimental results showed that a large amount of PM0.1was generated during the electronic cigarette smoking process,with a maximum concentration of 1.52×10^(11)units/m^(3),which was 21.6 times of the indoor background concentration.Half an hour after the suction was completed,the concentration of PM_(0.1)remained 8 times higher than the indoor background value.The calculation results of the human respiratory sedimentation model indicated that these ultrafine particles could deposit in large quantities in the human alveoli.Conclusion Indoor electronic cigarette smoking may significantly increase the concentration of PM_(0.1)in indoor air.It is necessary to strengthen the management of electronic cigarette use,especially in public indoor environments.