RMA "Below the Liner"
Sample No. 41238
(19.53 g soil/500 mL hexane)
RESTEK Pesticide Standard A-2
RESTEK Pesticide Standard B-2
Total Resolved Pesticides =
(80160 pg/L)
(4080 pg/L)
1,010 mg/kg dry wt.
RMA "Soil-Amended Basin F Sludge
RMA "Below the Liner"
RMA "Below the Liner"
from Above the Liner" Sample No. 24216
Sample No. 41249
Sample No. 24093
(20.15 g soil/2,000 mL hexane)
(21.29 g soil/500 mL hexane)
(21.74 g soil/100 mL hexane)
Total Resolved Pesticides =
Total Resolved
Total Resolved
3,270 mg/kg dry wt.
Pesticides = 1,280
Pesticides = 110
mg/kg dry wt.
mg/kg dry wt.
Figure 3. ECD GC profiles from two RESTEK Pesticide Standard solutions and hexane extracts of
RMA soil and sludge samples volume-adjusted to yield >100% full-scale chromatograms of each sample
to highlight qualitative similarity among the samples (i.e., a constant nominal weight [20 g] of each
sample was extracted/diluted with different volumes of solvent to allow detection of lower-concentration
components while major constituents all exceed 100% full scale). All chromatograms were obtained
under identical instrument conditions (1.0 L injected; 30 m, DB-1701 megabore column; 140C [0.5
6
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