NIOSHTIC-2 Publications Search
Size and shape characteristics of amphibole asbestos (amosite) and amphibole cleavage fragments (actinolite, cummingtonite) collected on occupational air monitoring filters.
Virta-RL; Sh-KB; Wylie-AG; Snyder-JG
Aerosols in the mining and industrial work environments, Vol. 2, characterization. Marple VA, Liu BYH, eds. Ann Arbor, MI: Ann Arbor Science, 1983 Jan; 2:633-643
The objective of this study was to determine if particle populations from asbestiform and nonasbestiform mineral sources can be distinguished through least-squares regression analyses using the relationship: log10 width = f log10 length + b where f = fibrosity index, the slope of the regression line; b= intercept on the log10 width axis. Amphibole particles on air monitoring filters from three mining and two industrial sites were characterized by scanning electron microscopy and energy-dispersive x-ray spectroscopy analysis. The data are evaluated using particle length and width summary statistics and compared with analyses by linear regression. Conclusions are: the mining site particle populations are morphologically similar, the industrial site particle populations are morphologically similar, and size and shape characteristics of mining site populations are statistically different from those of the industrial sites. Determination of either an asbestos or a nonasbestos source of amphiboles using linear regression techniques on data obtained from examination of air monitoring filters is a potential application of this technique.
Statistical-analysis; Asbestos-fibers; Minerals; Mineral-wool; Analytical-processes
Aerosols in the mining and industrial work environments, Vol. 2, characterization
Page last reviewed: September 2, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division