CONTROL
ACIDIFIED
ACIDIFIED
CONTROL
Day 0
Day 0
Day 7
Day 7
Day 28
Day 28
Day 64
0
4
8
12
16
0
4
8
12
16
Retention Time (min)
Figure 11. RP-HPLC chromatograms for Connecticut
River water samples fortified with HMX, RDX, TNB,
TNT, 2,4-DNT, and 2NT.
riod (Fig. 13). A mechanism that could explain
Day 64
this loss is partitioning into the polyethylene cap
liner. This behavior has been observed elsewhere
for Teflon in contact with hydrophobic organics,
including these three nitrotoluenes (Parker et al.
1990, Leggett and Parker 1994).
To test the hypothesis that losses of the
0
4
8
12
16
0
4
8
12
16
Retention Time (min)
mononitrotoluenes was due to partitioning into
the polyethylene cap liners, caps taken from vials
Figure 10. RP-HPLC chromatograms for Connecticut
stored with and without acidification for 28 days
River water samples fortified with DNB, tetryl,
were rinsed thoroughly with reagent-grade water
4ADNT, and 3NT.
14
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