Environmental Engineering Reference
In-Depth Information
Table 4
Main ions for antifouling booster biocides (Irgarol 1051, Chlorothalonil, Dichlofluanid, TCMTB, Sea-nine 211 and Diuron) observed in
LC methods and MS modes of operation using ESI and APCI ionization techniques
Antifouling
Ionization
Molecular
Molecular ion
/
Precursor ion
MS
/
MS-MS
Fragment ions (m
/
z)
/
Refs.
booster biocides
mode
weight
(m
/
z)
/
main fragment
operation
product ions (m
/
z)
254 [M + H]
+
Irgarol 1051
APCI (+)
253
MS (SIM)
[46, 47]
198 [MH - C
4
H
8
]
+
254 [M + H]
+
APCI (+)
MS (SIM)
[19, 48, 51]
254 [M + H]
+
198 [MH - C
4
H
8
]
+
ESI (+)
MS-MS (MRM)
[32]
245 [M + OH - HCl]
-
Chlorothalonil
APCI (-)
264
MS (SIM)
[19, 47]
155 [M - SCClFN(CH
3
)
2
]
-
199 [M - SCClF]
-
Dichlofluanid
APCI (-)
332
MS (SIM)
[19]
199 [M - SCCl
2
F]
-
APCI (-)
MS (SIM)
[47, 52]
91 [MH - SCCl
2
FSO
2
N(CH
3
)
2
]
-
155 [M - SCClFN(CH
3
)
2
]
-
APCI (-)
MS (SIM)
[51]
199 [M - SCCl
2
F]
-
282 [M + H]
+
284 [M + H +2]
+
Sea-nine 211
APCI (+)
281
MS (SIM)
[31, 46, 47, 52]
166 [M - CH
2
SCN]
-
TCMTB
APCI (-)
238
MS (SIM)
[19, 31, 47]
231 [M - H]
-
186 [M - H - HN(CH
3
)
2
]
-
Diuron
APCI (-)
232
MS (SIM)
[46]
233 [M + H]
+
235 [M + H +2]
+
APCI (+)
MS (SIM)
[31, 47, 52]
233 [M + H]
+
72 [MH - C
6
H
5
Cl
2
N]
+
ESI (+)
MS-MS (MRM)
[32]
72 [MH - C
6
H
5
Cl
2
N]
+
233 [M + H]
+
APCI (+)
MS (SIM)
[19, 51]
