TO-15 (HJ759) + PAMS on Rt-Alumina BOND/MAPD (by FID) and Rxi-624Sil MS (by MS) using Deans Switch

PeakstR (min)
1.Ethane7.68
2.Ethylene8.68
3.Propane10.36
4.Propylene15.58
5.Acetylene17.86
6.Dichlorodifluoromethane6.5
7.1,2-Dichlorotetrafluoroethane7.14
8.Isobutane7.19
9.Chloromethane7.35
10.trans-2-Butene7.84
11.n-Butane7.94
12.Vinyl chloride7.94
13.1,3-Butadiene8.16
14.cis-2-Butene8.35
15.1-Butene8.84
16.Bromomethane9.67
17.Chloroethane10.31
18.Isopentane10.77
19.Vinyl bromide11.26
20.Trichlorofluoromethane11.64
21.1-Pentene11.81
22.n-Pentane12.11
23.Ethanol12.68
24.trans-2-Pentene12.77
25.Isoprene13.21
26.cis-2-Pentene13.29
27.Acrolein13.65
28.1,1-Dichloroethene14.03
29.1,1,2-Trichlorotrifluoroethane14.17
30.Acetone14.27
31.2,2-Dimethylbutane14.27
32.Carbon disulfide14.83
33.Isopropyl alcohol14.99
34.Allyl chloride15.56
35.2,3-Dimethylbutane16.01
36.Methylene chloride16.05
37.2-Methylpentane16.14
38.Cyclopentane16.21
39.tert-Butyl alcohol16.49
40.Methyl tert-butyl ether16.94
41.trans-1,2-Dichloroethene16.95
42.3-Methylpentane16.97
43.1-Hexene17.56
44.n-Hexane17.81
45.1,1-Dichloroethane18.26
46.Vinyl acetate18.28
47.2,4-Dimethylpentane19.26
48.Methylcyclopentane19.46
49.2-Butanone19.69
50.cis-1,2-Dichloroethene19.73
51.Ethyl acetate19.78
52.Bromochloromethane20.28
53.Tetrahydrofuran20.3
54.Chloroform20.51
55.1,1,1-Trichloroethane20.88
56.2-Methylhexane20.89
57.Cyclohexane21.03
58.2,3-Dimethylpentane21.1
PeakstR (min)
59.Carbon tetrachloride21.21
60.3-Methylhexane21.28
61.Benzene21.63
62.1,2-Dichloroethane21.74
63.2,2,4-Trimethylpentane21.84
64.n-Heptane22.17
65.1,4-Difluorobenzene22.45
66.Trichloroethylene22.93
67.Methylcyclohexane23.38
68.1,2-Dichloropropane23.42
69.Methyl methacrylate23.43
70.1,4-Dioxane23.52
71.Bromodichloromethane23.89
72.2,3,4-Trimethylpentane24.08
73.2-Methylheptane24.37
74.3-Methylheptane24.64
75.cis-1,3-Dichloropropene24.65
76.Methyl isobutyl ketone24.85
77.Toluene25.25
78.n-Octane25.36
79.trans-1,3-Dichloropropene25.6
80.1,1,2-Trichloroethane25.95
81.Tetrachloroethene26.14
82.2-Hexanone26.23
83.Dibromochloromethane26.61
84.1,2-Dibromoethane26.84
85.Chlorobenzene-d527.5
86.Chlorobenzene27.55
87.Ethylbenzene27.64
88.n-Nonane27.74
89.m-Xylene27.81
90.p-Xylene27.81
91.o-Xylene28.38
92.Styrene28.4
93.Bromoform28.72
94.Isopropylbenzene28.86
95.4-Bromofluorobenzene29.14
96.1,1,2,2-Tetrachloroethane29.27
97.n-Propylbenzene29.42
98.1,2,3-Trimethylbenzene29.51
99.n-Decane29.55
100.p-Ethyltoluene29.57
101.2-Chlorotoluene29.6
102.1,3,5-Trimethylbenzene29.63
103.m-Ethyltoluene29.91
104.1,2,4-Trimethylbenzene30.14
105.1,3-Dichlorobenzene30.58
106.o-Ethyltoluene30.68
107.1,4-Dichlorobenzene30.70
108.Benzyl chloride30.82
109.m-Diethylbenzene30.86
110.p-Diethylbenzene30.99
111.n-Undecane31.02
112.1,2-Dichlorobenzene31.18
113.n-Dodecane32.33
114.1,2,4-Trichlorobenzene33.2
115.Hexachlorobutadiene33.32
116.Naphthalene33.62
image
GC_AR1172
ColumnRxi-624Sil MS, 60 m, 0.25 mm ID, 1.40 µm (cat.# 13869)
with zero dead volume Valco internal union (cat.# 20150)
SampleOzone precursor/PAMS mix (cat.# 26370)
75 Comp TO15 + NJ mix (cat.# 34392)
Conc.:10 ppbv
Injectionon-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 GasHe, constant flow
Flow Rate:2.0 mL/min
DetectorMS
Mode:Scan
Scan Program:
GroupStart Time
(min)
Scan Range
(amu)
Scan Rate
(scans/sec)
15.729-2263.7
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
PreconcentratorMarkes 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
InstrumentAgilent 7890B GC & 5977A MSD
NotesDeans 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
Temperature: 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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