988299 - Harmful and Potentially Harmful Compounds Produced by Heat-Not-Burn Tobacco Products (Student Poster 16)

Nowadays, there are various types of heat-not-burn tobacco products (HnBs) such as IQOS, Glo, etc. Due to the sensuous design and advertising targeting young people, users are rapidly increasing despite of the recommendations of smoking cessation from WHO (World Health Organization) and many countries. Manufacturers advertise that HnBs are safer than conventional cigarettes. Therefore, users of HnB think it is safe and can freely use it indoors. But several studies have shown that, unlike the manufacturer’s claim, HnBs emit particular matter (PM) and toxic substances such as heavy metals, VOCs, and carbonyls. These compounds are fatal not only for smokers but also for those who are with them, especially in children and respiratory diseases. There are conflicting opinions on the safety of HnBs. Therefore, we assessed the characteristics of these compounds emitted by heat-not burn tobacco products. In this study, an office-sized second-hand smoking chamber was installed to measure harmful and potentially harmful compounds generated by HnBs. When a smoker enters the chamber and vapors a HnB product, the PM generated from a HnB product was measured by SMPS (Scanning Mobility Particle Sizer, Model 3936, TSI, USA) and Aerocet 531S (Met One Instrument, USA). On the other hand, VOCs and aldehydes was collected by a VOCs trap (110 mg Tenax TA, 60/80 mesh, Supleco, USA) and Lp DNPH S10 Cartridge (60/100 mesh, Supleco, USA). After then, the collected VOCs and aldehydes were analyzed by a thermal desorber (TD, Model: Unity2, Makes International, UK)- Gas chromatography (GC, Model 6890N, Agilent, USA)/Mass Spectrometer Detector (MS, Model 5975, Agilent, USA) and a HPLC (High Performance Liquid Chromatography, Model YL9100 Plus HPLC System, Young in Chromass, Korea). In this study, the levels of aldehyde generated from HnBs were 130-150 times less than conventional cigarettes and that of nano particles showed similar tendency.