Figure 4
Comparison of the particle transmission efficiency in ES using X-ray and VUV ionizers for different sample flow rates. Schematic setup of the (a) VUV and (b) X-ray ionizers. Particle counts in each of these setups measured using (c) Rayleigh scattering and (d) SMPS, respectively. The results show that the VUV ionizer has higher particle transmission compared with the X-ray ionizer. |