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. Author manuscript; available in PMC: 2019 Feb 15.
Published in final edited form as: J Hazard Mater. 2017 Oct 29;344:549–557. doi: 10.1016/j.jhazmat.2017.10.057

Figure 2.

Figure 2

Trolox LC-ESI-MS/MS analysis: ROS (H2O2 and other species) generation reported as H2O2 equivalent unit as a function of the following parameters A) e-cig brand, B) e-liquid flavor, C) puffing protocol, D) operational voltage. One parameter was changed at a time from baseline scenario (Brand A, tobacco flavor, refillable tank, MPP puffing protocol, 3.7 V) to investigate influence of various parameters. For example, in the e-cig brand analysis, everything but the brand was kept constant. Brand A was changed to Brand B.