TO-15 (HJ759) + PAMS on Rt-Alumina BOND/MAPD (by FID) and Rxi-624Sil MS (by MS) using Deans Switch
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TO-15 (HJ759) + PAMS on Rt-Alumina BOND/MAPD (by FID) and Rxi-624Sil MS (by MS) using Deans Switch
Peaks
tR (min)
1.
Ethane
7.68
2.
Ethylene
8.68
3.
Propane
10.36
4.
Propylene
15.58
5.
Acetylene
17.86
6.
Dichlorodifluoromethane
6.5
7.
1,2-Dichlorotetrafluoroethane
7.14
8.
Isobutane
7.19
9.
Chloromethane
7.35
10.
trans-2-Butene
7.84
11.
n-Butane
7.94
12.
Vinyl chloride
7.94
13.
1,3-Butadiene
8.16
14.
cis-2-Butene
8.35
15.
1-Butene
8.84
16.
Bromomethane
9.67
17.
Chloroethane
10.31
18.
Isopentane
10.77
19.
Vinyl bromide
11.26
20.
Trichlorofluoromethane
11.64
21.
1-Pentene
11.81
22.
n-Pentane
12.11
23.
Ethanol
12.68
24.
trans-2-Pentene
12.77
25.
Isoprene
13.21
26.
cis-2-Pentene
13.29
27.
Acrolein
13.65
28.
1,1-Dichloroethene
14.03
29.
1,1,2-Trichlorotrifluoroethane
14.17
30.
Acetone
14.27
31.
2,2-Dimethylbutane
14.27
32.
Carbon disulfide
14.83
33.
Isopropyl alcohol
14.99
34.
Allyl chloride
15.56
35.
2,3-Dimethylbutane
16.01
36.
Methylene chloride
16.05
37.
2-Methylpentane
16.14
38.
Cyclopentane
16.21
39.
tert-Butyl alcohol
16.49
40.
Methyl tert-butyl ether
16.94
41.
trans-1,2-Dichloroethene
16.95
42.
3-Methylpentane
16.97
43.
1-Hexene
17.56
44.
n-Hexane
17.81
45.
1,1-Dichloroethane
18.26
46.
Vinyl acetate
18.28
47.
2,4-Dimethylpentane
19.26
48.
Methylcyclopentane
19.46
49.
2-Butanone
19.69
50.
cis-1,2-Dichloroethene
19.73
51.
Ethyl acetate
19.78
52.
Bromochloromethane
20.28
53.
Tetrahydrofuran
20.3
54.
Chloroform
20.51
55.
1,1,1-Trichloroethane
20.88
56.
2-Methylhexane
20.89
57.
Cyclohexane
21.03
58.
2,3-Dimethylpentane
21.1
Peaks
tR (min)
59.
Carbon tetrachloride
21.21
60.
3-Methylhexane
21.28
61.
Benzene
21.63
62.
1,2-Dichloroethane
21.74
63.
2,2,4-Trimethylpentane
21.84
64.
n-Heptane
22.17
65.
1,4-Difluorobenzene
22.45
66.
Trichloroethylene
22.93
67.
Methylcyclohexane
23.38
68.
1,2-Dichloropropane
23.42
69.
Methyl methacrylate
23.43
70.
1,4-Dioxane
23.52
71.
Bromodichloromethane
23.89
72.
2,3,4-Trimethylpentane
24.08
73.
2-Methylheptane
24.37
74.
3-Methylheptane
24.64
75.
cis-1,3-Dichloropropene
24.65
76.
Methyl isobutyl ketone
24.85
77.
Toluene
25.25
78.
n-Octane
25.36
79.
trans-1,3-Dichloropropene
25.6
80.
1,1,2-Trichloroethane
25.95
81.
Tetrachloroethene
26.14
82.
2-Hexanone
26.23
83.
Dibromochloromethane
26.61
84.
1,2-Dibromoethane
26.84
85.
Chlorobenzene-d5
27.5
86.
Chlorobenzene
27.55
87.
Ethylbenzene
27.64
88.
n-Nonane
27.74
89.
m-Xylene
27.81
90.
p-Xylene
27.81
91.
o-Xylene
28.38
92.
Styrene
28.4
93.
Bromoform
28.72
94.
Isopropylbenzene
28.86
95.
4-Bromofluorobenzene
29.14
96.
1,1,2,2-Tetrachloroethane
29.27
97.
n-Propylbenzene
29.42
98.
1,2,3-Trimethylbenzene
29.51
99.
n-Decane
29.55
100.
p-Ethyltoluene
29.57
101.
2-Chlorotoluene
29.6
102.
1,3,5-Trimethylbenzene
29.63
103.
m-Ethyltoluene
29.91
104.
1,2,4-Trimethylbenzene
30.14
105.
1,3-Dichlorobenzene
30.58
106.
o-Ethyltoluene
30.68
107.
1,4-Dichlorobenzene
30.70
108.
Benzyl chloride
30.82
109.
m-Diethylbenzene
30.86
110.
p-Diethylbenzene
30.99
111.
n-Undecane
31.02
112.
1,2-Dichlorobenzene
31.18
113.
n-Dodecane
32.33
114.
1,2,4-Trichlorobenzene
33.2
115.
Hexachlorobutadiene
33.32
116.
Naphthalene
33.62
GC_AR1172
Column
Rxi-624Sil MS, 60 m, 0.25 mm ID, 1.40 µm (cat.# 13869)
with zero dead volume Valco internal union (cat.# 20150)
Sample
Ozone precursor/PAMS mix (cat.# 26370)
75 Comp TO15 + NJ mix (cat.# 34392)
Conc.:
10 ppbv
Injection
on-column
Oven
Oven Temp.:
35 °C (hold 7 min) to 60 °C at 3 °C/min to 170 °C at 10 °C/min to 250 °C at 30 °C/min (hold 6 min)
Carrier Gas
He, constant flow
Flow Rate:
2.0 mL/min
Detector
MS
Mode:
Scan
Scan Program:
Group
Start Time (min)
Scan Range (amu)
Scan Rate (scans/sec)
1
5.7
29-226
3.7
Transfer Line Temp.:
250 °C
Analyzer Type:
Quadrupole
Source Type:
Extractor
Source Temp.:
230 °C
Quad Temp.:
150 °C
Electron Energy:
70 eV
Solvent Delay Time:
5.7 min
Tune Type:
BFB
Ionization Mode:
EI
Preconcentrator
Markes Unity 2 + CIA
Trap 1 Settings
Cooling temp.:
5 °C
Desorb temp.:
300 °C
Desorb flow:
6 mL/min
Desorb time:
180 sec
Internal Standard
Purge flow:
50 mL/min
Purge time:
60 sec
Vol.:
50 mL
ISTD flow:
50 mL/min
Standard
Size:
400 mL
Purge flow:
50 mL/min
Purge time:
60 sec
Sample flow:
100 mL/min
Instrument
Agilent 7890B GC & 5977A MSD
Notes
Deans switch time: 6.489 min Primary column to Deans switch: Rxi-624Sil MS 60 m x 0.25 mm x 1.40 μm (cat.# 13869), 2 mL/min He Secondary column to FID: Rt-Alumina BOND/MAPD 30 m x 0.25 mm x 4 μm (cat.# 19781), 3 mL/min He Transfer line to MS: intermediate-polarity deactivated 1 m x 0.1 mm (cat.# 10100), 3 mL/min He
FID Parameters Temp.: 250 °C H2 flow: 30 mL/min Air flow: 400 mL/min Makeup (N2) flow: 22 mL/min Data rate: 5 Hz
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