Environmental Engineering Reference
In-Depth Information
Table 3
Main ions for antifouling booster biocides (Irgarol 1051, Chlorothalonil, Dichlofluanid, TCMTB and Sea-nine 211) observed in GC
methods and MS modes of operation using EI, NCI and PCI ionization techniques
Antifouling
Ionization
Mw
Molecular ion
/
Precursor
MS
/
MS-MS
Fragment ions (m
/
z)
/
product ions (m
/
z)
Refs.
booster biocides
mode
ion
/
main fragment (m
/
z)
operation
253 [M]
+
182 [M - NC(CH
3
)
3
]
+
, 196 [M - C(CH
3
)
3
]
+
,
Irgarol 1051
EI
253
SIM
[20, 22, 26]
238 [M - CH
3
]
+
[28, 29, 33]
252 [M - H]
-
253 [M]
-
NCI
SIM
[28]
254 [M + H]
+
198 [MH - NC
4
H
7
]
+
, 282 [M + C
2
H
5
]
+
,
PCI
MS
/
MS
[27, 28]
294 [M + C
3
H
5
]
+
266 [M +2]
+
229 [M - Cl]
+
, 264 [M]
+
,
Chlorothalonil
EI
264
SIM
[26, 28]
268 [M +4]
+
(cluster)
266 [M +2]
-
229 [M - Cl]
-
, 231 [M +2-Cl]
-
NCI
MS
/
MS
[27]
266 [M +2]
-
264 [M]
-
, 230
NCI
SIM
[28]
267 [M +2+H]
+
231 [M +2-Cl]
+
, 295 [M +2+C
2
H
5
]
+
,
PCI
SIM
[28]
307 [M +2+C
3
H
5
]
+
123 [PhNS]
+
167 [PhNSO
2
], 224 [M -(CH
3
)
2
NSO
2
]
-
,
Dichlofluanid
EI
332
SIM
[20, 22]
332 [M]
[26, 28]
199 [MH - SCCl
2
F]
-
155 [M - SCCl
2
F]
-
,
/
NCI
MS
MS
[27]
91 [MH - SCCl
2
FSO
2
N(CH
3
)
2
]
-
155 [M - SCCl
2
F]
-
, 199 [MH - SCCl
2
F]
-
NCI
99
SIM
[28]
99, 224 [M -(CH
3
)
2
NSO
2
]
+
, 313
PCI
201
SIM
[28]
246 [M + H - Cl]
-
,
169 [M - C
8
H
17
]
-
, 182 [M - C
7
H
14
]
-
Sea-nine 211
EI
282
SIM
,
[26, 28]
169 [M - C
8
H
17
]
-
283 [M + H]
245 [M - H - Cl]
-
160 [M - C
6
H
14
]
-
, 162 [M +2-C
6
H
14
]
-
NCI
MS
/
MS
[27]
281 [M - H]
-
NCI
SIM
[28]
