Skip to main content
Fig. 1 | Respiratory Research

Fig. 1

From: Electronic cigarette menthol flavoring is associated with increased inhaled micro and sub-micron particles and worse lung function in combustion cigarette smokers

Fig. 1

Impact of PG:VG supplemented with menthol flavoring on inhaled particle count. Distribution profiles of the real-time particle count per cm3 by HUMITIPAA spanning twenty 5.9-s breathing intervals (6 samples per interval) for each size fraction (300 nm–1 μm, 1 μm–2.5 μm, 2.5 μm–4 μm, 4 μm–10 μm) using a base e-liquid mixture of 50:50 (v/v) PG:VG containing various menthol concentrations. Mann–Whitney U tests revealed statistical significance. **P < 0.01, ***P < 0.001, ****P < 0.0001. Results depicted are obtained from 4 independent trials with 5 puffs per trial per condition. Each data point represents the real-time HUMITIPAA Particulate Matter sensor reading that is taken approximately every second during the sampling peak. HUMITIPAA Human Vaping Mimetic Real-Time Particle Analyzer, PG Propylene Glycol, VG Vegetable Glycerin

Back to article page

Respiratory Research

ISSN: 1465-993X

Contact us