Estimation of the Dose of Electronic Cigarette Chemicals Deposited in Human Airways Through Passive Vaping

Overview

Journal J Expo Sci Environ Epidemiol

Specialties Environmental Health
Public Health

Date 2021 Jul 9

PMID 34239037

Citations 11

Authors

Wei-Chung Su

Ying-Hsuan Lin

Su-Wei Wong

Jin Y Chen

Jinho Lee

Anne Buu

Affiliations

Soon will be listed here.

Abstract

Background: Existing studies on the health effects of e-cigarettes focused on e-cigarette users themselves. To study the corresponding effects on passive vapers, it is crucial to quantify e-cigarette chemicals deposited in their airways.

Objective: This study proposed an innovative approach to estimate the deposited dose of e-cigarette chemicals in the passive vapers' airways. The effect of the distance between active and passive vapers on the deposited dose was also examined.

Methods: The chemical constituent analysis was conducted to detect Nicotine and flavoring agents in e-cigarette aerosol. The Mobile Aerosol Lung Deposition Apparatus (MALDA) was employed to conduct aerosol respiratory deposition experiments in real-life settings to generate real-time data.

Results: For e-cigarette aerosol in the ultrafine particle regime, the deposited doses in the alveolar region were on average 3.2 times higher than those in the head-to-TB airways, and the deposited dose in the passive vaper's airways increased when being closer to the active vaper.

Significance: With prolonged exposure and close proximity to active vapers, passive vapers may be at risk for potential health effects of harmful e-cigarette chemicals. The methodology developed in this study has laid the groundwork for future research on exposure assessment and health risk analysis for passive vaping.

Citing Articles

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Su W, Lee J, Zhang K, Wong S, Buu A Toxics. 2023; 11(8).

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Buu A, Yang J, Ou T, Nam J, Suh G, Lin H Addict Behav. 2023; 141:107662.

PMID: 36805815 PMC: 10226867. DOI: 10.1016/j.addbeh.2023.107662.

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