Characteristics and Sampling Efficiencies of Biobadge Aerosol Samplers
Abstract
The aerosol sampling efficiencies of four BioBadge(R) samplers manufactured by MesoSystem Technology, Incorporated (Richland, WA) were determined at the U.S. Army Edgewood Chemical Biological Center. BioBadge(R) samplers are battery operated personal samplers that use the rotating impactor/impellor technology to collect particles. Collected particles are removed from the impellor using either the lab or the field method. These methods require that the impellor be put into a zip lock bag with liquid for the particle removal procedure. The lab method sonicates the zip lock bag to remove the collected particles, and the field method claps the zip lock bag using a hand. Sampling efficiency tests were conducted with 1 - and 2.26-um fluorescent PSL beads, 3- and 8-um fluorescent oleic acid particles, and approximately 1-um BO Bacillus subtilis var. niger (Bacillus globigii) aerosol particles. The results show that the sampling efficiency is highest for 8-um particles using both recovery methods. The lab method shows a sampling efficiency of 74.3% +/- 3.0, and the field method shows a sampling efficiency of 65.5% +/- 5.4 for the 8-um particles. For 1-um particles, the sampling efficiency drops to 4.0% +/- 0.9 and 9.3% +/- 1.1 for the lab and field methods, respectively. BG results were similar to the 1-um PSL results.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 2005
- Accession Number
- ADA436882
Entities
People
- Jana S. Kesavan
- Karen A. Hottell
Organizations
- Edgewood Chemical Biological Center