Particle mass analyser
Particle mass analyser is a measurement technique for classifying aerosol particles according to their mass-to-charge ratio.
Techniques exist for classifying (selecting) aerosol particles in the sub 1,000 nm range according to electrical mobility using devices such as differential mobility analysers.
Electrical mobility[]
In electrical mobility measurement, aerosol particles are classified according to their aerodynamic drag-charge ratio. If the particle is non-spherical, the electrical-mobility diameter will not correspond to any measurable physical dimensions of the particle. (For a spherical particle, the electrical-mobility diameter will correspond to physically measurable diameter.)
Centrifugal particle mass analyzer[]
An alternative technique classifies particles according to their mass-to-charge ratio, using opposing electrical and centrifugal forces. This allows the classifier to select particles of a specified mass-to-charge ratio independent of particle shape.[1]
Further work on the technique used centrifugal and electrostatic forces to classify particles according to their mass-to-charge ratio.[2]
References[]
- ^ Ehara; et al. (March 1996). "Novel method to classify aerosol particles according to their mass-to-charge ratio - Aerosol particle mass analyser" (PDF). Journal of Aerosol Science. 27 (2): 217. Bibcode:1996JAerS..27..217E. doi:10.1016/0021-8502(95)00562-5.
- ^ Olfert and Collings (Nov 2005). "New method for particle mass classification—the Couette centrifugal particle mass analyzer". Journal of Aerosol Science. 36 (11): 1336. Bibcode:2005JAerS..36.1338O. doi:10.1016/j.jaerosci.2005.03.006.
- Measuring instruments
- Scientific instruments
- Scientific techniques
- Aerosol measurement