U.S. Geological Survey Toxic Substances Hydrology Program--Proceedings
of the Technical Meeting, Colorado Springs, Colorado, September 20-24, 1993,
Water-Resources Investigations Report 94-4015
  
Effect of Air Drying on Solvent Extraction of Trichloroethylene-Contaminated
Soil,Picatinny Arsenal, New Jersey
by
David Koller (U.S. Geological Survey, West Trenton, NJ), Thomas
E. Imbrigiotta (U.S. Geological Survey, West Trenton, NJ), and James A.
Smith (Department of Civil Engineering and Applied Mechanics, University
of Virginia, Charlottesville, VA)
Abstract
The effect of air drying trichloroethylene (TCE)-contaminated soils prior
to extraction with methanol to determine the concentrations of sorbed TCE
was investigated. Saturated-aquifer soil and ground-water samples were collected
at five locations within a TCE plume in ground water at Picatinny Arsenal,
New Jersey. Each soil sample was split into two fractions: one fraction
underwent extraction while wet and the other underwent extraction after
being air dried overnight. Concentrations of TCE in the wet soils were corrected
for TCE in the soil moisture by subtracting the TCE concentrations determined
in the ground-water samples. Comparison of the extraction results for air-dried
and wet soils showed that, for four of the five samples, the concentration
of sorbed TCE in the air-dried fraction was higher than or not significantly
different from that in the wet fraction. In addition, the precision of the
extraction results for air-dried soils was not significantly different from
the extraction results for wet soils.
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