400
Residue Acid Hydrolysate
Base-Soluble Hydrolysate
300
Acetonitrile Extract
200
100
0
TNT
ADNTs
DANTs
TNT
ADNTs
DANTs
Acid Hydrolysis
Base + Acid Hydrolysis
Figure 2. Comparison between the recoveries of ADNT and DANT transformation prod-
ucts from Day-15 aerated compost using acetonitrile extraction, acid digestion, and base/
acid digestion.
200
Solventt-Extractable (Free) TNT
en Extractable (Free) TNT
Sollventt-Extractable (Free) ADNTs
o ven Extractable (Free) ADNTs
Acid-Hydrollyzable (Conjugated) ADNTsTs
dro yzable (Conjugated) ADN
150
Solventt-Exttrracttabe (Free) ) DANTs
en Ex acabl le (Free DANTs
Acid-Hydrrollyzable (Conjugated) DANTs s
d o yzable (Conjugated) DANT
100
50
0
10
20
30
40
0
50
60
70
80
90
Digester Time (days)
Figure 3. Concentration of free (solvent-extractable) TNT and free and conjugated
(base/acid-hydrolyzable) transformation products recovered from digester sludge.
7
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