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Main Title Quantitative Estimates of Soil in Normal Children between the Ages of 2 and 7 Years: Population-Based Estimates Using Aluminum, Silicon, and Titanium as Soil Tracer Elements.
Author Davis, S. ; Waller, P. ; Buschbom, R. ; Ballou, J. ; White, P. ;
CORP Author Environmental Protection Agency, Washington, DC. Office of Health and Environmental Assessment. ;Washington Univ., Seattle. School of Public Health and Community Medicine. ;Battelle Pacific Northwest Labs., Richland, WA.
Publisher c1990
Year Published 1990
Report Number EPA/600/J-90/119 ;OHEA-E-325;
Stock Number PB93-199461
Additional Subjects Soils ; Children ; Trace elements ; Chemical analysis ; Aluminum ; Silicon ; Titanium ; Normal values ; Feces ; Fluorescence spectrometry ; Urine ; Exposure ; Ingestion(Biology) ; Reprints ; Geophagia ; Southeastern region(Washington)
Library Call Number Additional Info Location Last
NTIS  PB93-199461 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 14p
The investigation was undertaken to provide quantitative estimates of soil ingestion in young children on a population basis, and to identify demographic and behavioral characteristics that influence the amount of soil ingested. A total of 104 children between the ages of 2 and 7 yr were selected randomly from the population of a three-city area in southeastern Washington State. Using aluminum, silicon, and titanium as tracer elements, a mass-balance approach was employed to assess daily soil ingestion. A duplicate of all food items consumed, all feces, and some urine excreted were collected on 4 consecutive d, along with soil and house dust samples from each child's home. Samples were analyzed by x-ray fluorescence spectrometry. After adjustment of the soil ingestion estimates to account for missing food, excreta samples, and nonfood items consumed, the average daily values based on the three tracer elements were: aluminum, 38.9 mg/d (median = 25.3 mg/d); silicon, 82.4 mg/d (median = 59.4 mg/d); and titanium, 245.5 mg/d (median = 81.3 mg/d).