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A Technique to Measure Fine-dust Emission Potentials During Wind Erosion

^a Dep. of Plants, Soils and Biometeorology, Utah State Univ., Logan, UT 84322
^b USDA-ARS, L.J. Smith Hall-Washington State Univ., Pullman, WA 99164
^c Biological Systems Engineering Dep., Washington State Univ., Pullman, WA 99164
^d Deps. of Crop and Soil Sciences and Geology, Washington State Univ., Pullman, WA 99164

View larger version (23K): [in a new window]   Fig. 1. Abrader cone mounting and dimension detail.

View larger version (30K): [in a new window]   Fig. 2. Details of soil abrader inlet collar and cone end.

View larger version (89K): [in a new window]   Fig. 3. Soils of the Columbia Plateau, from General Soil Map of Washington (Boling et al., 1998).

View larger version (25K): [in a new window]   Fig. 4. Accumulative PM10, expressed as mass percentage of the total sample for mixtures of fine Arizona Road Dust and sand. The accumulative PM10 value at the intersection of tangents (a) to the accumulative PM10 record during the initial release (b) and abrasion (c) periods was used to estimate the PM10 emitted during the initial release.

View larger version (12K): [in a new window]   Fig. 5. The particles <10 µm (PM10) values for soil samples and mixtures of sand and fine Arizona Road Dust, as determined for the one hour test and for the initial pulse of PM10.

View larger version (13K): [in a new window]   Fig. 6. The particles <10 µm (PM10) generated from mixtures of sand and fine Arizona Road Dust during 1 h tests by the self-abrader.

View larger version (19K): [in a new window]   Fig. 7. The particles <10 µm (PM10) emission potentials obtained from the self-abrader versus those from dispersed analysis for each tested soil and the average values and 95% confidence intervals for the values aggregated by general soil mapping unit.