The risk associated with the dermal absorption of chemicals from contaminated soil is, in part, a function of particle size distribution, as determined by either dry or wet sieving techniques. For the soils tested, the adhered soil fractions were shown to be independent of organic matter content and soil origin. Soil moisture content becomes a factor only for very moist soils. Results show that the adhered fractions of dry or moderately moist soils with wide distributions of particle sizes generally consist of particles of diameters <63 μm. Consequently, dermal absorption experiments using larger size fractions may be of limited relevance to actual situations of soil exposure.
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1 October 2006
Dermally Adhered Soil: 1. Amount and Particle-Size Distribution
LaDonna M. Choate,
James F. Ranville,
Annette L. Bunge,
Donald L. Macalady
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Integrated Environmental Assessment and Management
Vol. 2 • No. 4
October 2006
Vol. 2 • No. 4
October 2006
adherence
Particle-size distributions
skin
soil
Wet sieve