Effects of inhalation frequency on inhalation/exposure dose of hazardous nanoparticles and toxic gases during cigarette smoking

In this study, we measured the pollutants generations during cigarette smoking under various inhalation frequency experiment scenarios by a self-developed smoking machine. Some concepts, the effective inhaled amount and exposure amount were proposed to quantitatively estimate emission rates. Importa...

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Bibliographic Details
Published in:Ecotoxicology and environmental safety 2022-07, Vol.240, p.113709, Article 113709
Main Authors: Deng, Banglin, Wang, Yiwen, Huang, Haiyan, Duan, Xiongbo, Liu, Aodong
Format: Article
Language:English
Subjects:
Cigarette Smoking
Effective inhalation amount
Environmental Pollutants
Exposure amount
Gases
Hazardous nanoparticles
Inhalation Exposure - adverse effects
Inhalation frequency
Nanoparticles
Nicotiana
Toxic gases
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Summary:In this study, we measured the pollutants generations during cigarette smoking under various inhalation frequency experiment scenarios by a self-developed smoking machine. Some concepts, the effective inhaled amount and exposure amount were proposed to quantitatively estimate emission rates. Important findings include: For interval 1 s, 2 s, 3 s, 4 s and 9 s (called from 1 s to 9 s herein), effective inhaled nano-scale PN (particle number) per cigarette was 8.43E+09 #, 7.24E+09 #, 5.74E+ 09 #, 3.82E+09 # and 1.15E+09 #, it decreased linearly with interval time; exposure amount of PN in side stream smoke was 1.06E+10 #, 1.2E+10 #, 1.48E+10 #, 1.84E+10 # and 8.74E+10 #, it increased with interval time. For toxic gases, all pollutants decreased with interval time in main stream smoke. In side stream smoke, NOx and CO firstly increased with interval time and then decreased (with the highest value at 3 s interval time), while HC always increased with interval time. So, this study is useful to understand the relationship between pollution and smoking habit. •A self-developed smoking machine was used to smoke cigarette during experiment.•Nanoparticles and toxic gases were measured at various interval times.•Inhaled amounts decreased with interval time, but exposure amounts of CO and NOx did not change monotonously.•Common smoking habits are not the best trade-off between inhaled and exposure amounts.
ISSN:0147-6513
1090-2414
DOI:10.1016/j.ecoenv.2022.113709