Table 9. Mean analyte concentrations (pg/mL) in headspace vapor above silt con-
taining buried U.S. military-grade TNT, at three temperatures and three mois-
ture levels.
23C
4C
12C
Analyte
Air dry
5.8%
10%
Air dry
5.8%
10%
Air dry
5.8%
10%
6 days
1,3-DNB
<d
14.5
11.8
1,2-DNB
<d
6.88
1.96
2,5-DNT
<d
2.11
0.438
2,4-DNT
0.047
20.1
11.4
3,5-DNT
<d
5.00
3.53
1,3,5-TNB
<d
<d
<d
2,4,6-TNT
0.317
0.717
0.731
15 days
12 days
13 days
18.5
<d
1.35
1.53
<d
<d
<d
1,3-DNB
<0.200
17.9
1,2-DNB
<0.051
2.06
2.54
<d
0.281
0.320
<d
<d
<d
2,5-DNT
<0.021
0.220
0.297
<d
0.081
0.103
<d
<d
<d
2,4-DNT
0.264
29.5
33.4
0.063
0.550
0.790
0.039
0.038
0.028
5.4
<d
0.184
0.195
<d
<d
<d
3,5-DNT
<0.146
4.74
1,3,5-TNB
<0.073
<0.089
<d
<d
<d
<d
<d
<d
<d
2,4,6-TNT
0.153
0.554
0.854
0.224
0.593
0.515
<d
<d
<d
22 days
19 days
20 days
1,3-DNB
<d
22.8
18.8
<d
2.22
3.22
<d
<d
<d
1,2-DNB
<d
2.30
2.70
<d
0.463
0.670
<d
<d
<d
2,5-DNT
<d
<0.225
0.265
<d
0.112
0.186
<d
<d
<d
2,4-DNT
0.039
38.3
37.8
0.036
1.80
2.95
0.039
0.044
0.029
3,5-DNT
<d
<7.47
6.53
<d
0.390
0.600
<d
<d
<d
1,3,5-TNB
<d
0.091
0.084
<d
<d
<d
<d
<d
<d
2,4,6-TNT
0.048
0.743
2.72
<0.209
0.047
0.180
<d
0.032
<d
34 days
35 days
36 days
1,3-DNB
<0.039
25.8
20.1
<d
9.59
6.97
<d
0.038
<d
1,2-DNB
0.039
2.56
2.92
<d
1.85
1.43
<d
<d
<d
2,5-DNT
<d
0.175
0.288
<d
0.390
0.416
<d
<d
<d
2,4-DNT
0.062
51.6
45.5
0.026
8.71
8.29
0.035
0.032
0.032
3,5-DNT
<d
<9.28
8.15
<d
1.74
<1.45
<d
<d
<d
1,3,5-TNB
<d
0.158
0.095
<d
<d
<d
<d
<d
<d
2,4,6-TNT
0.133
2.13
6.99
<d
0.282
0.206
<d
0.048
<d
63 days
67 days
69 days
1,3-DNB
<0.040
28.0
23.3
<d
12.5
9.53
<d
<d
<d
1,2-DNB
0.051
2.64
3.31
0.007
2.22
1.72
<d
<d
<d
2,5-DNT
<0.010
0.160
0.354
<d
0.458
0.410
<d
<d
<d
2,4-DNT
0.057
53.2
46.5
0.036
12.0
10.7
0.027
0.021
0.034
3,5-DNT
<0.041
8.54
7.92
<0.016
2.30
2.06
<d
<d
<d
1,3,5-TNB
<d
0.083
0.740
<d
<d
<d
<d
<d
<d
2,4,6-TNT
0.365
2.55
8.63
<0.019
0.254
0.509
<d
<d
<d
112 days
111 days
110 days
1,3-DNB
<d
15.5
14.2
<d
9.29
7.53
<d
<d
<d
1,2-DNB
0.029
1.67
2.17
<d
1.49
1.31
<d
0.016
<d
2,5-DNT
<d
0.113
0.245
<d
0.287
0.364
<d
<d
<d
2,4-DNT
0.028
28.9
29.1
0.037
9.38
9.72
0.024
0.026
0.013
3,5-DNT
<d
5.28
5.42
<d
1.83
<d
<d
<d
<d
1,3,5-TNB
<d
0.388
1.37
<d
<d
<d
<d
<d
<d
2,4,6-TNT
<d
2.65
8.77
<d
0.179
0.329
<d
<d
<d
173 days
173 days
173 days
1,3-DNB
0.013
not done
<d
not done
<d
0.168
<d
1,2-DNB
0.010
<d
<d
0.081
0.009
2,5-DNT
<d
<d
<d
<d
<d
2,4-DNT
0.015
0.012
0.037
0.018
0.010
3,5-DNT
<d
<d
<d
<d
<d
1,3,5-TNB
0.021
<d
<d
<d
0.012
2,4,6-TNT
0.017
0.011
0.163
0.016
0.006
<d
Values were less than the detection limit.
One replicate had a value greater than the detector maximum signal.
bold
Only values available were greater than the detector maximum signal.
bold
italics
One of the replicate values was less than the detection limit.
italics
Only one replicate was analyzed.
15
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