Comparison of the impact of the Tobacco Heating System 2.2 and a cigarette on indoor air quality

Abstract

The impact of the Tobacco Heating System 2.2 (THS 2.2) on indoor air quality was evaluated in an environmentally controlled room using ventilation conditions recommended for simulating "Office", "Residential" and "Hospitality" environments and was compared with smoking a lit-end cigarette (Marlboro Gold) under identical experimental conditions. The concentrations of eighteen indoor air constituents (respirable suspended particles (RSP) < 2.5 μm in diameter), ultraviolet particulate matter (UVPM), fluorescent particulate matter (FPM), solanesol, 3-ethenylpyridine, nicotine, 1,3-butadiene, acrylonitrile, benzene, isoprene, toluene, acetaldehyde, acrolein, crotonaldehyde, formaldehyde, carbon monoxide, nitrogen oxide, and combined oxides of nitrogen) were measured. In simulations evaluating THS 2.2, the concentrations of most studied analytes did not exceed the background concentrations determined when non-smoking panelists were present in the environmentally controlled room under equivalent conditions. Only acetaldehyde and nicotine concentrations were increased above background concentrations in the "Office" (3.65 and 1.10 μg/m(3)), "Residential" (5.09 and 1.81 μg/m(3)) and "Hospitality" (1.40 and 0.66 μg/m(3)) simulations, respectively. Smoking Marlboro Gold resulted in greater increases in the concentrations of acetaldehyde (58.8, 83.8 and 33.1 μg/m(3)) and nicotine (34.7, 29.1 and 34.6 μg/m(3)) as well as all other measured indoor air constituents in the "Office", "Residential" and "Hospitality" simulations, respectively.

Comparison of Chemicals in Mainstream Smoke in Heat-not-burn Tobacco and Combustion Cigarettes

“…Although it is low concentration, toxic compounds are definitely included in the mainstream Table 1 [16], so adverse effects of these compounds may easily spread to an unspecified population in the public and in crowded indoor places, such as restaurants via secondhand smoking. Various other hazardous compounds, such as volatile organic compounds (VOCs), are also included in both the particle and gas phases of mainstream smoke of iQOS [10,17].…”

New ideas, old problems? Heated tobacco products – a systematic review

“…selected indoor air constituents were measured -the concentrations of respirable suspended particles, ultraviolet particulate matter, fluorescent particulate matter, solanesol, 3-ethenylpyridine, formaldehyde, acrolein, crotonaldehyde, acrylonitrile, benzene, 1,3-butadiene, isoprene, toluene, CO, NO and NO x after the use of THS2.2 under 3 environmental conditions were equivalent to the concentrations found in background indoor air -THS2.2 use resulted in increased acetaldehyde and nicotine concentrations in indoor air, but these concentrations were considerably lower than those found in conventional cigarettes The tobacco industry claims that the aerosol formed during the heating process has around 90-95% lower levels of toxicants than conventional cigarette smoke [13][14][15]23,24]. This was partially confirmed by independent studies [27,28].…”

“…The tobacco industry claims that during HTP use, emissions of toxic chemicals are reduced due to the lower working temperature of the devices [13][14][15]23,24]. The results of independent studies suggest that toxic compounds are not completely removed from the HTP aerosol and these products are still not risk-free (Table 1) [7,19,[25][26][27][28][29][30][31][32][33][34][35].…”

“…the most abundant chemical compounds generated during HTP use were glycerol, menthol, nicotine, propylene glycol, and acetol [34,35] to compare the environmental pollution generated by e-cigarettes, IQOS, and traditional cigarettes, in a standard indoor environment the characterization of black carbon, metal particles, organic compounds, and the size-segregated particle mass, and the concentrations emitted from IQOS; a room 48 m 2 ; 13 smoking/ vaping sessions: an e-cigarette (16 mg/ml nicotine, 1 puff every min for 7 min, followed by 3 min pause), IQOS (with 10 menthol and 14 without menthol IQOS sticks, 3-h smoking session, average smoking time -7 min, followed by a short 3-min pause), conventional cigarette (9 cigarette per each session, average smoking time -7 min, followed by a short 3-min pause) -the IQOS side-stream smoke indicated that the particulate emission of organic matter from these devices is significantly different, depending on the organic compound -IQOS smoke was mostly free from aromatic hydrocarbons (PAHs) -IQOS use still emitted substantial levels (up to 2-6 mg/h during a regular smoking regimen) of certain n-alkanes, organic acids (such as suberic acid, azelaic acid, and n-alkanoic acids with carbon numbers [10][11][12][13][14][15][16][17][18][19] and levoglucosan compared to both e-cigarettes and conventional cigarettes, metal emissions were reduced in IQOS smoke, and these emissions were mostly similar to the background levels [14] PMI to assess the impact of THS2.2 use on indoor air quality THS2.2 and a widely available tobacco cigarette, an environmentally controlled room, 3 scenarios: "Office," "Residential" and "Hospitality;"…”

“…IJOMEH 2019;32(5) 596 taining propylene glycol or glycerol) which passes through a capsule made of granulated tobacco leaves [12,13]. Tobacco companies claim that HTPs are less harmful than traditional cigarettes [14][15][16][17][18]. However, the potential impact of HTP use on human health has not been fully investigated yet.…”