A Study of the Response of Two Aerosol Photometers When Assessing Organic and Inorganic Dust Concentrations Relative to Standard Gravimetric Methods
Abstract
The purpose of this project was to determine the utility of direct reading aerosol photometers for organic dust environments. The study compared the response of two photometers to organic vs. inorganic dust. The results could be explained by the photometer theory to determine the most important aspects of photometric dust exposure assessment in agriculture. The MiniRAM and the HAM were exposed to organic corn grain dust for 16 trials over a range of concentrations. The experiments were repeated using inorganic Arizona Road Dust. Gravimetric total and respirable dust samples were taken, along with personal cascade imp actor data. Least squares regression provided models for using photometric readings to predict gravimetric measurements. Using the HAM to predict total dust, the response was not different between the two dusts (p=0.7834). For all others (HAM for Respirable, MiniRAM for total and respirable), there was a significant difference in photometer response (p=0.0001, 0.0042, and 0.0001, respectively).
Document Details
- Document Type
- Technical Report
- Publication Date
- Aug 22, 2000
- Accession Number
- ADA381420
Entities
People
- Jeremy M. Slagley
Organizations
- Air Force Institute of Technology