Environmental Engineering Reference
In-Depth Information
Table 3
(continued)
pKa
a
Compound
Use
Structure
Precursor ion
Collision energy (eV)
Product ion
+
Trimethoprim
Antibiotic
291 [
Μ
+
Η
]
−
17.5
261
7.20
+
Thiabendazole
Antibiotic
202 [M
+
H]
−
23.0
175
+
Caffeine
Stimulant
195 [
Μ
+
Η
]
−
16.0
138
+
Sulfamethoxazole
Antibiotic
254 [
Μ
+
Η
]
−
13.0
156
5.81
+
Metoprelol
Anti-hypertension
268 [M
+
H]
−
15.5
191
9.17
+
+
H]
−
11.0
Propranolol
Anti-hypertension
260 [
Μ
116
9.14
+
Diphenhydramine
Antihistamine
256 [
Μ
+
H]
−
11.5
167
8.76
415 [M
+
H]
+
Diltiazem
Anti-hypertension
−
22.0
178
8.94
