85
Dissolved Organic Matter in Natural Waters
Compound
Use
Structure
Precursor ion
Collision energy (eV) Product ion pKa a
Warfarin
Anli-coaulant
309 [M
+ H]
+
−14.0
163
4.50
Miconazole
Antibiotic
417 [M
+ H]
+
−27.5
161
6.67
ESI Negative Analytes
Clofibric Acid
Antilipemi
213 [M
− H]
−
15.4
127
3.18
Ibuprofen
Analgesic
205 [M
− H|
−
7.0
161
4.41
Gemfibrozil
Antilipemie
249 [M
− H]
−
13.0
121
4.75
a
Calculated values obtained from SciFinder database (@ 2006 American Chemical Society)
Table 3 (continued)
Dissolved Organic Matter in Natural Waters
Compound
Use
Structure
Precursor ion
Collision energy (eV) Product ion pKa a
Warfarin
Anli-coaulant
309 [M
+ H]
+
−14.0
163
4.50
Miconazole
Antibiotic
417 [M
+ H]
+
−27.5
161
6.67
ESI Negative Analytes
Clofibric Acid
Antilipemi
213 [M
− H]
−
15.4
127
3.18
Ibuprofen
Analgesic
205 [M
− H|
−
7.0
161
4.41
Gemfibrozil
Antilipemie
249 [M
− H]
−
13.0
121
4.75
a
Calculated values obtained from SciFinder database (@ 2006 American Chemical Society)
Table 3 (continued)