Page 267 - Advances in Forensic Applications of Mass Spectrometry - Jehuda Yinon

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CH 3 CH 3 CH 3
NO 2 NO 2 NO 2

NO 2 O N
2
NO 2

2,3-DNT 2,4-DNT 2,5-DNT

CH
CH 3 3
O N NO 2
2
NO 2
NO 2
2,6-DNT 3,4-DNT
Scheme 2

NO 2 NO 2 NO 2
NO 2

NO 2
NO 2

1,2-DNB 1,3-DNB 1,4-DNB

NO 2 CH 3 CH 3
O N NH 2 O N NO 2
2
2
O N NO 2
2
NO 2 NH 2
1,3,5-TNB 2-ADNT 4-ADNT
Scheme 3

stant water percentage at 55%. The mobile phase starts at methanol–isopro-
panol–water (35:15:55), is held for 1 min, then is changed from 30 to 40%
methanol over the next 14 min, followed by 2 min hold time. The mobile
phase was returned to to its initial condition within one min and held for 2
min. Figure 6.6 shows the mass chromatograms under these conditions: 2,5-
DNT is separated, while 2,4- and 2,6-DNT are not.

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