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. 2022 Apr 27;187(2):279–297. doi: 10.1093/toxsci/kfac047

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Figure 2. — The total article number concentration and size distribution depend on both e-liquid composition and operational voltage. Comparison of number concentration, mean, and mode of particles generated from the 4 different THC-based e-liquid combinations, generated at 3.7 versus 5 V. (A, C, E, G) mobility diameter range of 10–420 nm; (B, D, F, H) aerodynamic diameter range of 0.5–20 µm. Aerosol measurements were taken every 60 s for a period of 10 min for both APS and SMPS, and then the average of the consecutive readings of particle number concentration and mean/modal aerosol size was calculated. Thus the N was at least 10 for both measurements.