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310 Soil Gas GC System - SRI Instruments
310 Soil Gas GC System
30
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PID and FID/DELCD Detectors
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Built-in "whisper quiet" Air Compressor
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4 channel PeakSimple Data System
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30-meter Capillary Column
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On-Column Injector
...on the ultra compact
chassis
The 310 Soil Gas GC is similar to the
, except that it is more compact and does not include a Purge
& Trap. This configuration has been approved by the Japanese Ministry of the Environment for the analysis of VOCs in
soil and water samples by direct headspace injection. The only sample preparation required is to enclose the soil sample
with water in a vial, and heat it or let it equilibrate at room temperature, then take a headspace sample and inject it into
the
Sensitive and non-destructive, the
responds to aromatics and any molecule with a carbon double bond.
The combination
may be operated in regular (simultaneous operation) or high sensitivity mode
(DELCD only, FID hydrogen off). The
responds to linearly all hydrocarbons, while the
responds to
chlorinated and brominated molecules. The
provides a nearly silent supply of FID combustion
air, eliminating the need for air cylinders. The 30-meter, 0.53mm capillary column can efficiently separate hydrocarbons up
to C
40
+.
To obtain the chromatograms
shown at right, a 50ppb
Japanese VOC standard was
placed into a VOA vial with
water, and allowed to
equilibrate at room
temperature for 45 minutes.
The FID chromatogram
shows all the components
and the solvent. The PID
does not detect the 1,1,1-
TCA. The DELCD is blind to
the solvent.