Characteristics, Sampling Efficiencies, and Possible Improvements to the Aerosol to Liquid Particle Extraction System (ALPES)

Abstract

Sampler characteristics and sampling efficiency measurements of the Aerosol to Liquid Particle Extraction System (ALPES) were determined wing monodisperse polystyrene latex (PSL) microspheres and fluorescent oleic acid droplets with fluorometer analysis. Sampling efficiency measurements of ALPES were determined using 0.5- and 1-micrometer PSL microspheres, and 5 micrometers sodium fluorescein tagged oleic acid (fluorescent oleic acid) particles. The results show that the ALPES has a peak efficiency of 57.4 +/- 5.1% for 5-micrometer particles. Tests conducted to determine possible improvements to the sampler showed that slowing the air flow rate of the sampler significantly increased the sampling efficiency, and washing the inside of the outer cylinder increased the collection efficiency. Dry versus wet collection tests showed that there is no difference in collection efficiency for these conditions.

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Document Details

Document Type
Technical Report
Publication Date
Jan 01, 2004
Accession Number
ADA422129

Entities

People

  • Jana S. Kesavan
  • K. A. Hottell

Organizations

  • Edgewood Chemical Biological Center

Tags

Communities of Interest

  • Energy and Power Technologies

DTIC Thesaurus Topics

  • Air Flow
  • Dielectric Polymers
  • Electrical Properties
  • Extraction
  • Flow
  • Flow Rate
  • Fluorometers
  • Glass Fibers
  • Materials
  • Measurement
  • Microspheres
  • Oleic Acid
  • Particle Size
  • Particles
  • Polystyrenes
  • Removal
  • Sampling

Readers

  • Aerosol Science/Aerosol Physics