Accession Number:

ADA513051

Title:

Aerosol Sampling: Comparison of Two Rotating Impactors for Field Droplet Sizing and Volumetric Measurements

Descriptive Note:

Journal article

Corporate Author:

FLORIDA AGRICULTURAL AND MECHANICAL UNIV PANAMA CITY FL PUBLIC HEALTH ENTOMOLOGY RESEARCH AND EDUCATION CENTER

Report Date:

2009-01-01

Pagination or Media Count:

7.0

Abstract:

This article compares the collection characteristics of a new rotating impactor Florida Latham Bonds FLB sampler for ultrafine aerosols with a mimic of the industry standard Hock-type. The volume and droplet-size distribution collected by the rotating impactors were measured via spectroscopy and microscopy. The rotary impactors were colocated with an isokinetic air sampler for a total volume flux measurement and a laser diffraction instrument for droplet-size distribution measurement. The measured volumetric flux and droplet-size distribution collection efficiencies were compared across 3 wind speeds 1, 1.8, and 3.5 msec. The FLB sampler had higher flux collection efficiencies than the Hock-type sampler. The FLB sampler collected 89, 87, and 98 of the total volume available per unit area at 1, 1.8, and 3.5 msec, respectively, whereas the Hock-type sampler collected 68, 19, and 21 of across the same wind speeds. Changes in wind speed had less impact and resulted in less data variability for the FLB sampler.

Subject Categories:

  • Agricultural Chemistry
  • Ecology
  • Test Facilities, Equipment and Methods

Distribution Statement:

APPROVED FOR PUBLIC RELEASE