A SINGLE-STAGE IMPACTION DEVICE FOR PARTICLE SIZING BIOLOGICAL AEROSOLS,
Abstract
In many aerobiological studies, the size of particles containing viable, infective organisms is of interest, since nasal and upper respiratory tract penetration is dependent on the particle size spectrum of an aerosol breathed by an animal. Using the theoretical calculations of Ranz and Wong, a single-stage impactor has been developed. This device, when affixed to an impinger sampler, divides the total aerosol sample into two particle-size fractions. A series of these instruments, with particle-size cutoffs spanning the range from one to nineteen microns, is used to determine the size distribution of aerosol particles containing viable cells. The device is described and results are presented from experiments in which it was used to determine the size distribution of particles containing viable cells in aerosols of two bacterial species. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1963
- Accession Number
- AD0422368
Entities
People
- John E. Malligo
- Leon S. Idoine
Organizations
- United States Army Biological Warfare Laboratories