Effect of swirling desolvation gas flow in an atmospheric pressure ion source. Savtchenko, S., Ashgriz, N., Jolliffe, C., Cousins, L., & Gamble, H. Journal of the American Society for Mass Spectrometry, 25(9):1549-56, 9, 2014.
Effect of swirling desolvation gas flow in an atmospheric pressure ion source. [pdf]Paper  Effect of swirling desolvation gas flow in an atmospheric pressure ion source. [link]Website  abstract   bibtex   
A numerical study is performed to examine the effect of introducing a swirling desolvation gas flow on the flow transport characteristics in an electrospray and an atmospheric pressure chemical ionization (APCI) system. An ion source having three coaxial tubes is considered: (1) an inner capillary tube to inject the liquid sample, (2) a center coaxial tube to provide a room temperature gas flow to nebulize the liquid, referred to as the nebulizing gas flow, and (3) an outer coaxial tube having a converging exit to supply a high temperature gas for droplet desolvation, referred to as the desolvation gas flow. The results show that a swirling desolvation gas flow reduces the dispersion of the nebulizing gas and suppresses turbulent diffusion. The effect of swirling desolvation flow on the trajectory of a range of droplet sizes emitted from a source is also considered.

Downloads: 0