Open Access Digital Repository of Ministry of Earth Sciences, Government of India

Electrostatic charge measurement and charge neutralization of fine aerosol particles during the generation process

Tsai, CJ and Lin, JS and Deshpande, CG and Liu, LC (2006) Electrostatic charge measurement and charge neutralization of fine aerosol particles during the generation process. Particle and Particle Systems Characterization, 22 (5). pp. 293-298.

Full text not available from this repository. (Request a copy)

Abstract

An aerosol charge analyzer has been constructed to measure the charge distribution of NaCl particles generated in the laboratory. A radioactive electrostatic charge neutralizer utilizing Po-210 was used to neutralize the electrostatic charge of the particles. The atomization technique was used to generate NaCl particles with diameters of 0.2 to 0.8 μm, while the evaporation and condensation method was adopted to generate particles of 0.01 to 0.2 μm in diameter. The experimental data demonstrates that the absolute average particle charge depends on the particle diameter, and is higher than that calculated by the Boltzmann charge equilibrium for particles within the range of 0.2 to 0.8 μm. The charge increases with decreasing NaCl concentration. When these particles are neutralized using the Po-210 neutralizer, it is found that the electrostatic charge reaches the Boltzmann charge equilibrium. For 0.01 to 0.2 μm NaCl particles generated using the evaporation and condensation method, test results show that the absolute average particle charge is higher than that calculated by the Boltzmann charge equilibrium for particles larger than 0.03 to 0.05 μm in diameter, while it is lower than that predicted by the Fuchs theory [1], for particles smaller than 0.03 to 0.05 μm. However, after charge neutralization, particles with diameter above 0.05 μm reach the Boltzmann charge equilibrium condition, and the charges for particles with diameters of 0.010 to 0.05 μm, agree well with Fuchs' theory

Item Type: Article
Additional Information: Copyright of this article belongs to Wiley.
Uncontrolled Keywords: Atomization; Charged particles; Condensation; Electrostatics; Particles (particulate matter); Sodium chloride, Aerosol charge analyzer; Charge neutralizer utilization; Condensation aerosols; Electrostatic charges; Evaporation aerosols, Aerosols
Subjects: Meteorology and Climatology
Depositing User: IITM Library
Date Deposited: 18 Dec 2014 10:25
Last Modified: 18 Dec 2014 10:25
URI: http://moeseprints.incois.gov.in/id/eprint/1954

Actions (login required)

View Item View Item