Study on the influence factors of the release characteristics of IQOS cigarette smoke

Tong, Yuxing; Xiong, Zhe; Gao, Song; Yan, Qunshan; Liu, Zhichang; Wang, Ziwei; Le, Xi; Hao, Shu; Tang, Xiangbin; Li, Pengfei; Xiong, Yimin; Wang, Yi

doi:10.1088/1755-1315/514/5/052034

Cited by 3 publications

(1 citation statement)

References 2 publications

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“…Gas Chromatography-Mass Spectrometer (GC-MS). The pyrolytic oil solution was characterized and analyzed by gas chromatography-mass spectrometry (Thermo Scientific, Trace 1300/ISQ) [7,8]. The capillary column was HP-Innowax (30 m×0.25 mm×0.25 mm).…”

Section: Product Analysismentioning

confidence: 99%

Effect of oxygen and temperature on pyrolytic oil production from tobacco stem waste

Yan

Tong

Gao

et al. 2022

International Conference on Sustainable Technology and Management (ICSTM 2022)

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To reveal the characteristics of pyrolytic oil production from the thermal cracking of tobacco stem waste at different temperatures and oxygen concentrations, experimental studies of tobacco stem thermal cracking at 300-800°C and oxygen concentrations of 0-8% were carried out using a fixed-bed reactor, and the pyrolytic oil composition was analyzed by the gas chromatography-mass spectrometry (GC-MS) and the ultraviolet fluorescence spectroscopy (UV-F). The results showed that: 1.Thermal cracking of tobacco stem could produce about 23.25-39.50 wt% of pyrolytic oil, and the oil yield reached the highest at 500°C; 2.Increasing oxygen concentration could promote the oxidative consumption of volatiles, leading to the decrease of pyrolytic oil yield; 3.Nicotine yield reached the highest value at 500°C when oxygen concentration was 0% and 4%, 7.0 mg and 9.5 mg (per g of tobacco), respectively. When the oxygen concentration was 8%, the nicotine yield reached the highest value of 7.8 mg (per g of tobacco) at 400°C. 4.Under an inert atmosphere, high temperature inhibited the production of acids, ketones, aldehydes, alcohols, and heterocyclic substances and promoted the production of phenols, while oxidizing atmosphere helped to produce phenols, heterocyclic substances, and aromatic substances. 5.High temperature and oxidizing atmosphere significantly promoted the production of macrocyclic aromatic compounds. The results of this paper clarify the effects of reaction temperature and oxygen concentration on the generation characteristics of pyrolytic oil in the thermal cracking process of tobacco stem and provide theoretical guidance for the pyrolysis utilization of tobacco stem waste.

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Section: Product Analysismentioning

confidence: 99%

Effect of oxygen and temperature on pyrolytic oil production from tobacco stem waste

Yan

Tong

Gao

et al. 2022

International Conference on Sustainable Technology and Management (ICSTM 2022)

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Effects of Glycerol and Propylene Glycol on Smoke Release of Heat-not-burn Tobacco Products

Tong

Xiong

Yan

et al. 2021

J. Phys.: Conf. Ser.

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Glycerin and propylene glycol are the main components of the atomizing agent in heat-not-burn tobacco products (HnB), which affect the smoke release of HnB significantly. In this study, the roles of the glycerin and propylene glycol as the atomizing agent on smoke release of HnB were studied by using a fixed-bed reactor system. The effects of glycerin to propylene glycol ratio in the atomizing agent, and the content of atomizing agent in the HnB were investigated. Gas chromatography-mass spectrometer (GC-MS) was used to analyze the condensable components in the released smoke, and gas chromatography (GC) was used to analyze the gaseous products. The results showed that glycerol could promote the thermal cracking of tobacco and smoke release during pyrolysis. The amount of smoke was the largest when the glycerol ratio was 60%, meanwhile the nicotine content in the smoke was also the highest. When using the glycerin and propylene glycol mixture as the atomizing agent, the amount of smoke and concentration of nicotine and CO in the smoke were increased when the content of atomizing agent decreased in the HnB. The results indicated that the interactions between glycerin and propylene glycol, and the interactions between the atomizing agent and the tobacco were both existed during smoking, which could change the characteristics of the atomizing agent and the smoke release property of HnB.

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Fluorescent property of carbon dots extracted from cigarette smoke and the application in bio-imaging

Li¹,

Bai

Zhang

et al. 2022

Opt. Express

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Cigarette smoke is one of the six major pollution sources in the room air. It contains large number of particles with size less than 10 nm. There exist carbon dots (CDs) in cigarette smoke which have strong fluorescence and with good bio-compatibility and low toxicity. CDs in cigarette smoke can be applied in bio-imaging which has great potential applications in the integration of cancer diagnosis and treatment. In this paper, CDs were extracted from cigarette smoke. Then, sodium borohydride was added to CDs aqueous solution for reduction and the reduced CDs (R-CDs) were used for biological cell imaging. The results indicate that the CDs with the particle size <10 nm in cigarette smoke are self-assembled by the polymerizated polycyclic aromatic hydrocarbons (PAHs) and ammonium nitrite which are disk nano-structure composed of sp2/sp3 carbon and oxygen/nitrogen groups or polymers. Sodium borohydride can reduce the carbonyl group on the surface of CDs to hydroxyl group and increase the ratio of the Na 1s ratio of the CDs from 1.86 to 7.42. The CDs can emit blue fluorescence under ultraviolet irradiation. After reduction, the R-CDS have the intensity of fluorescence 7.2 times than before and the fluorescence quantum yield increase from 6.13% to 8.86%. The photoluminescence (PL) wavelength of R-CDS have red-shift of 7 nm which was due to the increasing of Na element ratio. The onion epidermal cells labeled with R-CDs show that the CDs could pass through the cell wall into the cell and reach the nucleus. The cell wall and the nucleus could be clearly visualized. CDs also shows low toxicity to human bronchial epithelial cells (BEAS-2B) with good biological activity. The obtained results indicate that the CDs and R-CDs have good fluorescent property which could be used as bio-imaging agent.

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Study on the influence factors of the release characteristics of IQOS cigarette smoke

Cited by 3 publications

References 2 publications

Effect of oxygen and temperature on pyrolytic oil production from tobacco stem waste

Effect of oxygen and temperature on pyrolytic oil production from tobacco stem waste

Effects of Glycerol and Propylene Glycol on Smoke Release of Heat-not-burn Tobacco Products

Fluorescent property of carbon dots extracted from cigarette smoke and the application in bio-imaging

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