Dermally adhered soil: 1. Amount and particle-size distribution.
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 microm. Consequently, dermal absorption experiments using larger size fractions may be of limited relevance to actual situations of soil exposure.
Choate
LaDonna M
LM
Department of Chemistry and Geochemistry, Colorado School of Mines, Golden, Colorado 80401, USA.
Ranville
James F
JF
Bunge
Annette L
AL
Macalady
Donald L
DL
D000327:Adsorption; D000818:Animals; D004781:Environmental Exposure / Q000009:adverse effects* / Q000032:analysis*; D006801:Humans; D010316:Particle Size; D012867:Skin / Q000187:drug effects* / Q000378:metabolism; D012989:Soil Pollutants / Q000633:toxicity*; D014867:Water / Q000737:chemistry*; D014872:Water Movements
D012989:Soil Pollutants; D014867:Water