PMID- 36385917 OWN - NLM STAT- PubMed-not-MEDLINE LR - 20221118 IS - 2215-0161 (Print) IS - 2215-0161 (Electronic) IS - 2215-0161 (Linking) VI - 9 DP - 2022 TI - Online analysis of chemical composition and size distribution of fresh cigarette smoke emitted from a heated tobacco product. PG - 101912 LID - 10.1016/j.mex.2022.101912 [doi] LID - 101912 AB - Online analysis of chemical composition of cigarette smoke of a heated tobacco product (HTP) was performed by using a home-made vacuum ultraviolet (VUV) lamp-based photoionization time-of-flight (TOF) mass spectrometer. A capillary inlet and an aerodynamic lens were utilized to sample the gas- and particulate-phase of the HTP smoke, without dilution and pretreatment, which can be switched from each other within minutes. A thermal desorption unit was installed to vaporize the particulate-phase into gas and its vaporization temperature was determined, based on an equilibrium between the evaporation efficiency and the thermal decomposition of organic compounds. Then these species were softly ionized by VUV photons and their ions were measured by a reflectron TOF mass analyzer. Meanwhile, the puff-by-puff resolved size distributions of the HTP smoke were probed with a commercial scanning mobility particle sizers (SMPS). The mean diameters of particles firstly increase with the puff number, mainly located in the range of 200 - 300 nm, and then approached a steady state. This method was validated to measure the physical-chemical characteristics of the HTP cigarette smoke.*A capillary inlet and an aerodynamic lens were utilized to sample the gas- and particulate-phase of the HTP smoke.*Chemical composition of the HTP smoke was measured by using a compact VUV photoionization mass spectrometer.*The particle size distribution of the HTP smoke without dilution was measured online. CI - (c) 2022 The Author(s). FAU - Wen, Zuoying AU - Wen Z AD - Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, Anhui, China. FAU - Li, Xiangyu AU - Li X AD - China National Tobacco Quality Supervision & Test Centre, Zhengzhou 450001, Henan, China. FAU - Gu, Xuejun AU - Gu X AD - Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, Anhui, China. FAU - Zhang, Weijun AU - Zhang W AD - Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, Anhui, China. FAU - Pang, Yongqiang AU - Pang Y AD - China National Tobacco Quality Supervision & Test Centre, Zhengzhou 450001, Henan, China. FAU - Jiang, Xingyi AU - Jiang X AD - China National Tobacco Quality Supervision & Test Centre, Zhengzhou 450001, Henan, China. FAU - Hou, Hongwei AU - Hou H AD - China National Tobacco Quality Supervision & Test Centre, Zhengzhou 450001, Henan, China. FAU - Hu, Qingyuan AU - Hu Q AD - China National Tobacco Quality Supervision & Test Centre, Zhengzhou 450001, Henan, China. FAU - Wang, Jian AU - Wang J AD - Key Laboratory of Combustion and Pyrolysis, China Tobacco Anhui Industrial Co. Ltd., Hefei 230088, Anhui, China. FAU - Zhang, Long AU - Zhang L AD - Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, Anhui, China. FAU - Liu, Yong AU - Liu Y AD - Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, Anhui, China. FAU - Tang, Xiaofeng AU - Tang X AD - Anhui Institute of Optics and Fine Mechanics, HFIPS, Chinese Academy of Sciences, Hefei 230031, Anhui, China. LA - eng PT - Journal Article DEP - 20221104 PL - Netherlands TA - MethodsX JT - MethodsX JID - 101639829 PMC - PMC9661439 OTO - NOTNLM OT - Cigarette smoke OT - Heated tobacco product OT - Online chemical analysis OT - Particulate matter OT - Size distribution OT - VUV photoionization mass spectrometry EDAT- 2022/11/18 06:00 MHDA- 2022/11/18 06:01 PMCR- 2022/11/04 CRDT- 2022/11/17 11:35 PHST- 2021/11/19 00:00 [received] PHST- 2022/10/30 00:00 [accepted] PHST- 2022/11/17 11:35 [entrez] PHST- 2022/11/18 06:00 [pubmed] PHST- 2022/11/18 06:01 [medline] PHST- 2022/11/04 00:00 [pmc-release] AID - S2215-0161(22)00289-8 [pii] AID - 101912 [pii] AID - 10.1016/j.mex.2022.101912 [doi] PST - epublish SO - MethodsX. 2022 Nov 4;9:101912. doi: 10.1016/j.mex.2022.101912. eCollection 2022.