Fig. 1.

Schematic diagram of the electric arc wire-thermal spray coating aerosol generator and exposure system (as modified from [4]). Electric arc wire- thermal spray coating was performed in one room (A), and the aerosols transferred to an animal exposure chamber in a separate room (B) divided by shaded glass doors (B). Abbreviations: Data Ram = real-time aerosol monitor; MOUDI = Micro Orifice Uniform Deposit Impactor; ELPI = electric low-pressure impactor; SEM = scanning electron microscopy; TEM = transmission electron microscopy; Temp = temperature; MFC = mass flow controller.