Detonation Crater
Visible Plume = 81 m 2
North
Visible Plume Sampled = 6.0 m2
East
Ice
m
6
3
0
S6 S5 S4
S3
S2
S1
3
6
3
0
3
6
9
12
15
18
21
24
27
30 m
a. First detonation.
Detonation Crater
Visible Plume = 79 m 2
North
Visible Plume Sampled = 12 m2
East
m
6
3
0
S4 S3
S2
S1
S5
3
6
3
0
3
6
9
12
15
18
21
24
27
30 m
b. Second detonation.
Figure 6. Residue deposition and surface snow samples collected for 60-mm mortar
round detonations at Fort Drum.
fused-silica, 1.5-m film thickness of 5%-(phenyl)95%-
ples. Spiked samples were used to validate the extrac-
tion efficiency of this procedure.
dimethyl polysiloxane RTX-5 column from Restek. The
GC oven was temperature programmed as follows:
100C for 2 minutes, 10C/min ramp to 250C, and
GC-ECD determination
All SOE and SOX samples were analyzed by GC-
3-minute hold. The carrier gas was helium at 10 mL/min
ECD on an HP6890 gas chromatograph equipped with
(linear velocity about 100 cm/s). The makeup gas was
a micro cell Ni63 ECD (300C). We used direct injec-
nitrogen (40 mL/min). Selected extracts were reanal-
tion (250C) of 1-L soil extracts in a packed port that
yzed on a Restek RTX-225 (50% cyanopropylmethyl
was equipped with a deactivated Restek Uniliner. Pri-
50% phenyl methyl polysiloxane) for analyte confir-
mary analysis was conducted on a 6-m 0. 32-mm ID
mation. Further details of the procedure may be found
6
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