Abstract
A procedure for the accurate determination of moments of aerosol electric mobility distributions was developed. The main apparatus required is a carefully constructed Hewitt (differential) electric mobility analyzer. The method does not require vanishingly small aerosol flow rates to obtain accuracy. The procedure may be considered a primary standard measurement technique, since no calibration with particles of known characteristics is required. One application of the procedure is the determination of the mean and standard deviation of particle size for near-monodisperse aerosols. As an illustration, a Dow LS- 1117-B polystyrene latex aerosol was analyzed. The mean and standard deviation of the particle diameter were found to be 0·80 and 0·018 μm, respectively. The accuracy of the mean dia. determination is estimated to be 2 per cent.
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
