Identification of Halohydrins as Potential Disinfection By-Products in Treated Drinking Water
Table 2
Accurate mass measurements (NH3 CI mode) of the DBPs using GCT and FTICR instruments.
DBP
Formula
Mass (calculated)
Mass (GCT)[a]
Dev.[c]
Mass (FTICR)[b]
Dev.[c]
A
C5H13N35Cl
122.07310
122.07355
3.7
122.07323
1.0
C4H10NO2Cl
140.04783
140.08465
263
140.08374
C5H15NO35Cl
140.08367
140.08465
7.0
140.08374
0.5
C5H15NO37Cl l
142.08072
142.08125
3.7
142.08079
0.5
B
C5H13N79Br
166.02259
166.02425
10.0
166.02249
0.6
C5H13N81Br
168.02054
168.02205
9.0
168.02041
0.8
C5H15NO79Br
184.03315
—
—
184.03311
0.2
C5H15NO81Br
186.03111
—
—
186.03102
0.4
C
C5H15NO35Cl
140.08367
140.08485
8.4
140.08367
0.0
C5H15NO37Cl
142.08072
142.08105
2.3
142.08081
0.6
Note. Measurements obtained using [a]treated drinking water samples; [b]authentic standards of the halohydrins; [c]the deviation from the calculated value is given in parts per million.