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CORESTA Meeting, Smoke Science/Product Technology, 2019, Hamburg, ST 05

Determination of 10 kinds of polycyclic aromatic hydrocarbon in the aerosol of heat-not-burn products by SPME-GC-MS

SHEN Junyu; LIU Xin
Yunnan Reascend Tobacco Technology (Group) Co., Ltd, Kunming, P.R. China

Polycyclic aromatic hydrocarbons are low in mainstream tobacco smoke, but they are among the most hazardous substances and have been shown to be carcinogenic in a number of studies. One polycyclic aromatic hydrocarbon is benzo[a]pyrene, which has been classified as a Group 1A carcinogen by the International Agency for Research on Cancer (IARC). However, the determination of polycyclic aromatic hydrocarbon in the aerosol of heat-not-burn products is still limited to the single determination of benzo[a]pyrene. There are many kinds of polycyclic aromatic hydrocarbons and they all in+volve different degrees of risk of disease and carcinogenicity. Therefore, the selection of the main hazardous aromatic hydrocarbon compounds and the establishment of a comprehensive determination of polycyclic aromatic hydrocarbons in the aerosol of heat-not-burn products can provide a reference for their safety assessment. Polycyclic aromatic hydrocarbons are present in aerosols, but they are extremely low in content and the composition of the aerosol itself is very complex, which greatly interferes with the determination. Therefore, it is necessary to increase the concentration of the aerosol in a single set test as much as possible, and to separate it further after collection and then analyse it. In this study, a pack (20 sticks) of heat-not-burn products of a certain brand sold on the market was selected as a group, and the aerosol was captured by a smoking machine, and the polycyclic aromatic hydrocarbon substances were separated by solid phase microextraction (SPME). The relative contents of ten polycyclic aromatic hydrocarbons were determined by GC-MS with internal standard method. The polycyclic aromatic hydrocarbons are dominated by compounds with low rings. About 80 % are bicyclic and tricyclic aromatic hydrocarbons, and about 20 % are tetracyclic and above polycyclic aromatic hydrocarbons. Therefore, this method can be used for the comprehensive determination of polycyclic aromatic hydrocarbons in the aerosol of heat-not-burn products, and has important reference significance for the safety assessment of heat-not-burn products.