Generator of Fine Polydisperse Aerosol

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Title:Generator of Fine Polydisperse Aerosol
Creators:
Mikuška, Pavel
Journal or Publication Title:
Collection of Czechoslovak Chemical Communications, 69, 7, pp. 1453-1463
Uncontrolled Keywords:Aerosol generator, Polydisperse aerosol, Nitrate, Pneumatic atomization, Nebulization, Fine aerosol

Abstract

A simple and inexpensive laboratory generator of test aerosol is described. The generator is based on the principle of pneumatic atomization of a solution of a soluble compound by high-velocity air stream. After evaporation of solvent from produced droplets, solid particles are formed. The generator provides continuous unattended long-term operation with constant aerosol output. The performance characteristics of the generator were evaluated by spraying solutions of NaNO<sub>3</sub> and (NH<sub>4</sub>)<sub>2</sub>SO<sub>4.</sub> The generator produced polydisperse aerosol in a fine region of particle sizes with a geometric mean diameter of 52.1 nm and a geometric standard deviation of 1.90 for the NaNO<sub>3</sub> concentration in the sprayed solution 30 g/l. The total number concentration of the produced aerosol was 3.14 × 10<sup>7</sup> cm<sup>-3</sup> at a nominal air flow rate 78 l/min. The number concentration of particles increased with increasing flow rate of solution, solute concentration and pressure of compressed air through the atomizer or with decreasing total air flow rate through the generator. The change in any of these variables can be used to adjust the particle number concentration. NaNO<sub>3 </sub>aerosol generation rate was 0.172 mg/min for the NaNO<sub>3</sub> concentration in the sprayed solution 30 g/l. <p>

Title:Generator of Fine Polydisperse Aerosol
Creators:
Mikuška, Pavel
Uncontrolled Keywords:Aerosol generator, Polydisperse aerosol, Nitrate, Pneumatic atomization, Nebulization, Fine aerosol
Divisions:Life and Chemical Sciences > Institute of Organic Chemistry and Biochemistry > Collection of Czechoslovak Chemical Communications
Journal or Publication Title:Collection of Czechoslovak Chemical Communications
Volume:69
Number:7
Page Range:pp. 1453-1463
ISSN:0010-0765
E-ISSN:1212-6950
Publisher:Institute of Organic Chemistry and Biochemistry
Related URLs:
URLURL Type
http://dx.doi.org/10.1135/cccc20041453UNSPECIFIED
ID Code:2284
Item Type:Article
Deposited On:06 Feb 2009 17:17
Last Modified:06 Feb 2009 16:17

Citation

Mikuška, Pavel (2004) Generator of Fine Polydisperse Aerosol. Collection of Czechoslovak Chemical Communications, 69 (7). pp. 1453-1463. ISSN 0010-0765

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