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Environmental Analysis of Volatile Compounds in Soil, Water and Sludge by GC / PID / DELCD
Courtesy of Buck Scientific Inc
The analysis of volatile compounds (b.p.
<140°C) in environmental samples represents
contamination from active or recent discharges.
EPA methods 502.2, 601, 602, 8010, and 8021
test for pollutants from a broad array of
commercial and industrial sources, including
gasoline and diesel spills, solvent discharges,
and disinfection by-products. The test methods
include mixtures of up to 62 individual
compounds, and therefore have tremendous
power in the identification of these sources.
The analysis is performed using a purge and
trap device which separates the compounds of
interest from the sample matrix, based on
differences in volatility and water solubility.
The analytes are identified using very sensitive
photo ionization and halogen-specific detectors
which respond selectively to the compounds of
interest while showing little or no response to
other compounds in the sample. Because of the
selectivity of the detectors, expensive test
methods such as GC-MS are not necessary.
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