Impacts of exhaled aerosol from the usage of the tobacco heating system to indoor air quality: A chamber study

Autor: Karolina Keraitytė, Tadas Prasauskas, Violeta Kaunelienė, Darius Čiužas, Dainius Martuzevicius, Edvinas Krugly, Marija Meišutovič-Akhtarieva
Přispěvatelé: „Elsevier Science' grupė
Rok vydání: 2019
Předmět:
Environmental Engineering
Particle number
Air changes per hour
Health
Toxicology and Mutagenesis
0208 environmental biotechnology
carbonyls
02 engineering and technology
010501 environmental sciences
01 natural sciences
environmental tobacco aerosol
law.invention
Heating
chemistry.chemical_compound
Indoor air quality
law
Tobacco
Humans
Environmental Chemistry
tobacco heating system
Air quality index
0105 earth and related environmental sciences
particulate matter
Aerosols
Pollutant
Air Pollutants
Public Health
Environmental and Occupational Health
Acetaldehyde
Tobacco Products
General Medicine
General Chemistry
Pollution
020801 environmental engineering
Aerosol
chemistry
Air Pollution
Indoor
Environmental chemistry
Ventilation (architecture)
Environmental science
Tobacco Smoke Pollution
indoor air quality
nicotine
Zdroj: Chemosphere. 223:474-482
ISSN: 0045-6535
DOI: 10.1016/j.chemosphere.2019.02.095
Popis: Aerosol particle, carbonyl, and nicotine concentrations were analysed as pollutants affecting indoor air quality during the usage of electrically-heated tobacco product - the Tobacco Heating System (THS). Quantitative experimental variables included THS use intensity as number of parallel users (1, 3, or 5), distance to the bystander (0.5, 1, or 2 m), as well as environmental conditions in a chamber: ventilation intensity as air changes per hour (0.2, 0.5, or 1 h−1), and relative humidity (RH, 30, 50 or 70%). The real-time particle number (PNC), CO and CO2 concentration, as well as off-line acetaldehyde, formaldehyde, nicotine, and 3-ethenylpyridine concentration was measured during and after the active usage. Use of THS resulted in a statistically significant increase of several analytes including nicotine, acetaldehyde, PM2.5, and PNC as compared to the background. The obtained levels were significantly lower (approximately 16, 8, 8 and 28 times for nicotine, acetaldehyde, PNC and PM2.5, respectively) compared to the levels resulting from conventional cigarette (CC) smoking under identical conditions. The maximum 30 min concentration of PNC (4.8 × 105 #/cm3), as well as maximum concentration of PNC (9.3 × 106 #/cm3) suggest that the intensive use of THS in a confined space with limited ventilation might cause substantially elevated aerosol concentrations, although these particles appeared as highly volatile ones and evaporated within seconds. Generally, the usage intensity (number of simultaneous users) prevailed as the most important factor positively affecting pollutant variations; another important factor was the distance to bystander.
Databáze: OpenAIRE
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