Aerodynamic Particle Sizing versus Light Scattering Intensity Measurement as Methods for Real-Time Particle Sizing Coupled with Time-of-Flight Mass Spectrometry.

Measurement of scattered light intensity and aerodynamic particle sizing are two methods that have recently been coupled with time-of-flight mass spectrometry for real-time determination of aerosol particle size and composition. An aerosol analysis technique recently developed in our laboratory, aerosol time-of-flight mass spectrometry, offers a unique experimental platform to evaluate both of these sizing techniques. This paper presents a comparison of results obtained with these two methods.