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. 2021 Mar 9;16(3):e0248127. doi: 10.1371/journal.pone.0248127

Fig 9. Venn diagram showing elements identified in atomizer components of four EC generations.

Fig 9

Al = aluminum, Co = cobalt, Cr = chromium, Cu = copper, Fe = iron, Ni = nickel, Sn = tin, Ti = titanium, Zn = zinc, Ag = silver, Pb = lead, W = tungsten, V = vanadium, Au = gold, Mo = molybdenum, Mn = manganese, Mg = magnesium, C = carbon, Ca = calcium, Na = sodium, O = oxygen, Si = silicon, Ba = barium, Cl = chlorine, P = phosphorus, S = sulfur, K = potassium. a = Williams et al. 2019a; b = Williams et al. 2019b.