Figure 4
Temporal mass changes of an e-cigarette aerosol droplet. Total mass change of a droplet (black diamonds) over time relative to the initial droplet mass (2% nicotine at pH 9.9). Mass changes of the different components over time, relative to the initial mass: VG (orange, dash dotted line), PG (green triangles), nicotine (red squares), and H2O (blue dots). The VG mass is assumed to be constant. The inset shows the nicotine and H2O mass changes in more detail.
