An Index of PM10 Potential Emission from Soil
Omar F. Carvacho, Lowell L. Ashbaugh, and Robert G. Flocchini
The ability of soil to release PM10 into the
air under controlled laboratory conditions depends in a complex manner on the soil type.
In general, the smaller soil particle size fractions emit more PM10 per unit
mass of soil; some soils, however, emit little PM10 from the small size
fraction. Soils with the same soil classification do not necessarily have equivalent
potential to emit PM10. We have developed and evaluated a readily measurable
index of potential PM10 emissions from soils in the laboratory that may improve
our ability to estimate actual soil PM10 emissions for different activities.
Ongoing experiments at UC Davis will explore the ability of the PM10 index to
predict the emissions of soils under real-world activities.