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Effect of Heating on Physicochemical Property of Aerosols during Vaping

Author

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  • Tae-Jun Ko

    (Department of Innovation and Technology Research, ADA Science & Research Institute, American Dental Association, Gaithersburg, MD 20879, USA)

  • Shin Ae Kim

    (Department of Innovation and Technology Research, ADA Science & Research Institute, American Dental Association, Gaithersburg, MD 20879, USA)

Abstract

Many electronic cigarette manufacturers have offered different types of “high-end mods” that allow for controlled heating of the e-liquid. However, the controlled heating condition can drastically alter the inhaled aerosols’ physical properties and chemical substances, causing potential health risks. To investigate the contribution of heating on aerosol properties, we used four common power settings in the mods to conduct a physicochemical analysis. Our data showed that the aerosol mass and nicotine content in the aerosols increased at high power. Additionally, high power led to aerosolization of a viscous component in the e-liquid, increasing the viscosity of aerosol. However, the pH of the aerosol was constant regardless of the applied power. In addition, high-power operation made nicotine prone to oxidation, resulting in the color of the aerosol turning yellow. Lastly, we demonstrated that e-cigarette aerosol could contain various metals, including aluminum, arsenic, cadmium, chromium, copper, iron, magnesium, nickel, lead, and zinc. Even though these metal contents proportionally increased with the power setting, they remained far below the recommended exposure limits. Our finding demonstrates that the heating conditions of the e-cigarette change the physicochemical properties of the aerosols and their metal contents, thereby possibly affecting users’ oral and respiratory systems.

Suggested Citation

  • Tae-Jun Ko & Shin Ae Kim, 2022. "Effect of Heating on Physicochemical Property of Aerosols during Vaping," IJERPH, MDPI, vol. 19(3), pages 1-13, February.
    • Handle: RePEc:gam:jijerp:v:19:y:2022:i:3:p:1892-:d:744325
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    References listed on IDEAS

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    1. Yulong Cui & Jiannan Chen & Yibo Zhang & Daoping Peng & Tao Huang & Chunwei Sun, 2019. "pH-Dependent Leaching Characteristics of Major and Toxic Elements from Red Mud," IJERPH, MDPI, vol. 16(11), pages 1-16, June.
    2. Konstantinos E. Farsalinos & Vassilis Voudris & Konstantinos Poulas, 2015. "Are Metals Emitted from Electronic Cigarettes a Reason for Health Concern? A Risk-Assessment Analysis of Currently Available Literature," IJERPH, MDPI, vol. 12(5), pages 1-18, May.
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