Real time measurement of particle size distribution of airborne cotton dust by light scattering.
Hersh-SP; Batra-SK; Lee-WW
American Chemical Society Symposium Series, No. 189, Cotton Dust: Controlling an Occupational Health Hazard 1982:123-141
Real time measurements were obtained by light scattering of the particle size distribution (PSD) of airborne cotton dust in a model card room. A multichannel analyzer was used in conjunction with the light sensing particle counter. This made it possible to identify components of the dust as originating from vegetable matter in the cotton, mineral matter from the humidifiers, or background dust. The light scattering measuring technique proved sensitive, reproducible, and was able to provide valuable information about the nature of the dust and the mechanisms of dust generation and removal. A study was also conducted of the influence of various dust control techniques including the addition of dust suppressing lubricants to the cotton. The effects of applying 0.48 percent of Texaspray Compound and 1.09 percent of Spraycot 8853 were examined. In both cases there was a marked drop in the number of particles and in dust concentration, 70.5 percent for the Texaspray and 84.8 percent for the Spraycot. The fraction of particles removed was not constant for all particle diameters.
NIOSH-Grant; Control-technology; Cotton-dust; Lung-irritants; Plant-dusts
Textile Materials & Management North Carolina State Univ Post Office Box 5006 Raleigh, N C 27607
American Chemical Society Symposium Series, No. 189, Cotton Dust: Controlling an Occupational Health Hazard
North Carolina State University Raleigh, Raleigh, North Carolina