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3
Table 3. Target congener groups SRM transitions.
The collision cell (Q2) gas pressure and collision energy were optimized for PCDD/F measurement at 22 eV. The
monitored selected reaction monitoring (SRM) transitions as well as the MS conditions are given below in Table 3.
Compound Name
Abrev.
Formula Nominal
Mass
Exact
Mass
Presursor Ion
m/z
Product Ion
m/z
Collision Energy
[ev]
Tetrachloro-dibenzodioxin
TCDD C
12
H
4
O
2
Cl
4
320
319.8965
319.90
256.93
22
321.89
258.93
22
Pentachloro-dibenzodioxin
PeCDD C
12
H
3
O
2
Cl
5
354
353.8576
355.85
292.89
22
357.85
294.89
22
Hexachloro-dibenzodioxin
HeCDD C
12
H
2
O
2
Cl
6
388
387.8186
387.82
324.86
22
389.82
326.85
22
Heptachloro-dibenzodioxin
HpCDD C
12
H
1
O
2
Cl
7
422
421.7796
423.78
360.81
22
425.77
362.81
22
Octachloro-dibenzodioxin
OCDD C
12
O
2
Cl
8
456
455.7407
457.74
394.77
22
459.74
396.77
22
Tetrachloro-[
13
C
12
]dibenzodioxin
TCDD
13
C
12
H
4
O
2
Cl
4
332
331.9368
331.94
267.97
22
333.93
269.97
22
Pentachloro-[
13
C
12
]dibenzodioxin PeCDD
13
C
12
H
3
O
2
Cl
5
366
365.8978
367.90
303.93
22
369.89
305.89
22
Hexachloro-[
13
C
12
]dibenzodioxin HeCDD
13
C
12
H
2
O
2
C
l6
400 399.8589
399.86
335.89
22
401.86
337.89
22
Heptachloro-[
13
C
12
]dibenzodioxin HpCDD
13
C
12
H
1
O
2
Cl
7
434
433.8199
435.82
371.85
22
437.81
373.85
22
Octachloro-[
13
C
12
]dibenzodioxin
OCDD
13
C
12
O
2
Cl
8
468
467.7809
469.78
405.81
22
471.78
407.81
22
Tetrachloro-dibenzofuran
TCDF C
12
H
4
OCl
4
304
303.9016
303.90
240.94
22
305.90
242.94
22
Pentachloro-dibenzofuran
PeCDF C
12
H
3
OCl
5
338
337.8627
339.86
276.90
22
341.86
278.89
22
Hexachloro-dibenzofuran
HeCDF C
12
H
2
OCl
6
372
371.8237
371.82
308.86
22
373.82
310.86
22
Heptachloro-dibenzofuran
HpCDF C
12
H
1
OCl
7
406
405.7847
407.78
344.82
22
409.78
346.82
22
Octachloro-dibenzofuran
OCDF
C
12
OCl
8
440
439.7457
441.76
378.80
22
443.76
380.79
22
Tetrachloro-[
13
C
12
]dibenzofuran
TCDF
13
C
12
H
4
OCl
4
316
315.9419
315.94
251.97
22
317.94
253.97
22
Pentachloro-[
13
C
12
]dibenzofuran PeCDF
13
C
12
H
3
OCl
5
350
349.9029
351.90
287.93
22
353.90
289.93
22
Hexachloro-[
13
C
12
]dibenzofuran
HeCDF
13
C
12
H
2
OCl
6
384 383.8639
383.86
319.90
22
385.86
321.89
22
Heptachloro-[
13
C
12
]dibenzofuran HpCDF
13
C
12
H
1
OCl
7
418
417.8250
419.82
355.86
22
421.82
357.85
22
Octachloro-[
13
C
12
]dibenzofuran
OCDF
13
C
12
OCl
8
452
451.7860
453.78
389.82
22
455.78
391.81
22