Table A18. Analyte concentration (pg/mL) in headspace vapor
above clay containing buried U.S. military-grade TNT, at
12C, and three moisture levels.
Air dry
15% moisture
30% moisture
Sample
Rep A
Rep B
Rep A
Rep B
Rep A
Rep B
13 days
1,3-DNB
<d
<d
<d
<d
<d
<d
1,2-DNB
<d
<d
<d
<d
<d
<d
2,5-DNT
<d
<d
<d
<d
<d
<d
2,4-DNT
<d
<d
<d
<d
<d
<d
3,5-DNT
<d
<d
<d
<d
<d
<d
1,3,5-TNB
<d
<d
<d
<d
<d
<d
2,4,6-TNT
<d
<d
<d
<d
<d
<d
20 days
1,3-DNB
<d
<d
<d
<d
<d
<d
1,2-DNB
<d
<d
<d
<d
<d
<d
2,5-DNT
<d
<d
<d
<d
<d
<d
2,4-DNT
<d
<d
<d
<d
<d
<d
3,5-DNT
<d
<d
<d
<d
<d
<d
1,3,5-TNB
<d
<d
<d
<d
<d
<d
2,4,6-TNT
<d
<d
<d
<d
<d
<d
36 days
1,3-DNB
<d
<d
<d
<d
<d
<d
1,2-DNB
<d
<d
<d
<d
<d
<d
2,5-DNT
<d
<d
<d
<d
<d
<d
2,4-DNT
<d
<d
<d
<d
<d
<d
3,5-DNT
<d
<d
<d
<d
<d
<d
1,3,5-TNB
<d
<d
<d
<d
<d
<d
2,4,6-TNT
<d
<d
<d
<d
<d
<d
69 days
1,3-DNB
<d
<d
<d
<d
<d
<d
1,2-DNB
<d
<d
<d
<d
<d
<d
2,5-DNT
<d
<d
<d
<d
<d
<d
2,4-DNT
<d
<d
<d
<d
<d
<d
3,5-DNT
<d
<d
<d
<d
<d
<d
1,3,5-TNB
<d
<d
<d
<d
<d
<d
2,4,6-TNT
<d
<d
<d
<d
<d
<d
110 days
1,3-DNB
not done
<d
not done
<d
not done
<d
1,2-DNB
<d
<d
<d
2,5-DNT
<d
<d
<d
2,4-DNT
<d
<d
<d
3,5-DNT
<d
<d
<d
1,3,5-TNB
<d
<d
<d
2,4,6-TNT
<d
<d
<d
173 days
1,3-DNB
not done
<d
not done
<d
not done
0.017
1,2-DNB
<d
<d
0.005
2,5-DNT
<d
<d
<d
2,4-DNT
0.010
0.026
0.021
3,5-DNT
<d
<d
<d
1,3,5-TNB
<d
0.011
0.016
2,4,6-TNT
0.005
0.107
0.047
<d Values were less than the detection limit.
40
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