Table A7. Analyte mass collected (pg/min) in headspace vapor
above clay containing buried U.S. military-grade TNT, at 23C,
and three moisture levels.
Air dry
15% moisture
30% moisture
Sample
Rep A
Rep B
Rep A
Rep B
Rep A
Rep B
6 days
1,3-DNB
<d
<d
2.34
2.24
2.29
1.64
1,2-DNB
<d
<d
1.19
1.31
1.22
1.00
2,5-DNT
<d
<d
<d
0.054
<d
<d
2,4-DNT
<d
<d
<d
<d
<d
<d
3,5-DNT
<d
<d
21.8
23.2
19.8
15.8
1,3,5-TNB
<d
<d
<d
<d
<d
<d
2,4,6-TNT
<d
<d
<d
<d
<d
<d
15 days
1,3-DNB
<d
not done
7.31
not done
5.11
not done
1,2-DNB
<d
1.40
0.950
2,5-DNT
<d
0.370
0.140
2,4-DNT
<d
7.76
4.47
3,5-DNT
<d
3.73
0.933
1,3,5-TNB
<d
0.511
0.208
2,4,6-TNT
<d
1.02
0.806
22 days
1,3-DNB
<d
<d
6.55
8.44
6.26
7.49
1,2-DNB
<d
<d
0.937
1.46
0.916
1.30
2,5-DNT
<d
<d
<d
0.333
0.148
0.368
2,4-DNT
<d
<d
13.4
18.5
10.5
14.2
3,5-DNT
<d
<d
<d
3.06
1.17
2.95
1,3,5-TNB
<d
<d
0.234
0.578
0.228
0.576
2,4,6-TNT
<d
<d
0.563
0.800
0.543
0.810
34 days
1,3-DNB
<d
<d
10.0
9.98
8.85
7.63
1,2-DNB
<d
<d
1.22
1.64
1.45
0.909
2,5-DNT
<d
<d
0.146
0.216
0.290
0.123
2,4-DNT
<d
<d
36.4
36.0
29.0
25.2
3,5-DNT
<d
<d
3.73
3.86
3.06
2.55
1,3,5-TNB
<d
<d
0.606
0.168
0.912
0.386
2,4,6-TNT
<d
<d
0.477
0.473
0.424
0.328
63 days
1,3-DNB
<d
<d
5.48
6.32
4.50
5.22
1,2-DNB
<d
<d
1.05
1.13
0.901
1.05
2,5-DNT
<d
<d
0.076
0.049
0.064
0.057
2,4-DNT
<d
<d
25.9
28.6
19.6
24.1
3,5-DNT
<d
<d
2.77
3.09
2.13
2.60
1,3,5-TNB
<d
<d
0.436
0.457
0.433
0.456
2,4,6-TNT
<d
<d
0.287
0.303
0.211
0.262
112 days
1,3-DNB
not done
<d
not done
7.24
not done
6.17
1,2-DNB
<d
1.71
1.53
2,5-DNT
<d
0.055
0.057
2,4-DNT
<d
40.4
33.6
3,5-DNT
<d
5.13
4.27
1,3,5-TNB
<d
0.716
0.711
2,4,6-TNT
<d
0.550
0.531
173 days
1,3-DNB
not done
<d
not done not done not done not done
1,2-DNB
<d
2,5-DNT
<d
2,4-DNT
0.043
3,5-DNT
<d
1,3,5-TNB
<d
2,4,6-TNT
0.016
<d Values were less than the detection limit.
29
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