fig1

Figure 1. Concentrations of total As, total iAs, and two iAs species in e-cig aerosols. (A) Total As in PG/VG blanks from the follow-up study and three major types of e-cigs analyzed. (B) iAs in each type of e-cig analyzed. (C) AsIII and AsV in two flavors of Stig d-POD product.