Sodium chloride particles deposited on a gelatin film containing silver nitrate form in a humid environment clearly visible dark brown reaction spots (Liesegang circles) after development in u.v.-light. The size of these reaction spots depends on the mass of NaCl in the particles. To establish the spot size vs particle size relation, particles produced by nebulising NaCl-solutions and sea water were sampled in an aerosol centrifuge. The location of deposition yields the aerodynamic diameter of the particle, and the spot size is measured microscopically. In this way the spot size vs aerodynamic diameter relation is established experimentally in the so far unexplored aerodynamic diameter range between 0.5 and 2.0 μm. © 1976.
O. Preining et al., "The Magnification Factor For Sodium Chloride Liesegang Circles Established With An Aerosol Centrifuge," Journal of Aerosol Science, vol. 7, no. 4, Elsevier, Jan 1976.
The definitive version is available at https://doi.org/10.1016/0021-8502(76)90089-6
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01 Jan 1976