58
Table X.
Elution times forMethod 502.2 compounds on various Rtx
®
GC columns.
Column:
60m x 0.53mm x 3.00mdf
Flow:
~10mL/min., dead time 1.80min.
Oven:
35C (hold 9min.) to 220C@ 11min. (hold 10min.)
Elution Time inMinutes Rtx-VGC Rtx-502.2 Rtx-VRX Rtx-624 Rtx-1 Rtx-1701 Rtx-200 Rtx-35 Rtx-50
dichlorodifluoromethane
2.31 2.18 2.54 2.59 2.16 1.99 1.95 2.04 1.96
chloromethane
2.64 2.51 2.75 2.94 2.30 2.36 2.18 2.39 2.39
vinyl chloride
2.78 2.67 2.99 3.16 2.51 2.51 2.23 2.51 2.47
bromomethane
3.35 3.35 3.46 3.86 2.89 3.16 2.62 3.21 3.27
chloroethane
3.58 3.44 3.66 4.07 3.04 3.32 2.85 3.21 3.27
trichlorofluoromethane
3.83 3.91 4.50 4.56 3.80 3.45 2.85 3.46 3.25
1,1-dichloroethene
4.83 4.93 5.32 5.75 4.74 4.57 3.34 4.58 4.46
Freon
®
113
4.91 4.61 5.77 5.68 4.93 4.17 3.56 3.78 3.38
methylene chloride
6.10 6.02 5.68 7.39 4.62 6.64 3.97 6.07 6.40
trans
-1,2-dichloroethene 6.49 6.78 7.07 8.07 5.85 6.68 4.20 6.40 6.59
methyl-
tert
-butyl-ether
6.80 6.67 7.68 8.21 6.28 6.34 4.88 5.76 5.52
tert
-butyl alcohol
7.19 5.76 5.99 8.40 4.62 7.61 4.86 5.08 5.48
1,1-dichloroethane
8.10 8.08 7.74 9.74 6.16 8.68 5.54 8.00 8.30
cis
-1,2-dichloroethene
9.80 10.14 9.47 11.51 7.59 10.75 6.12 10.27 10.50
2,2-dichloropropane
10.10 10.01 10.24 11.37 8.22 10.15 7.41 9.60 9.41
bromochloromethane
10.33 11.05 9.88 12.13 7.91 11.66 6.12 11.46 12.06
chloroform
10.61 10.65 10.11 12.38 8.21 11.79 5.69 10.66 11.02
carbon tetrachloride
10.87 12.31 12.60 12.87 11.39 11.26 6.44 11.80 11.72
1,1,1-trichloroethane
11.07 11.68 11.85 12.59 10.28 11.31 7.59 11.40 11.25
1,1-dichloropropene
11.39 12.09 12.31 12.98 10.89 11.67 7.79 11.74 11.62
benzene
11.97 12.72 12.70 13.43 11.13 12.44 8.66 12.86 12.95
1,2-dichloroethane
12.44 12.73 11.67 13.70 8.78 13.38 9.52 12.90 13.60
fluorobenzene
12.90 13.22 13.24 14.11 11.70 13.27 10.55 13.25 13.38
trichloroethene
13.24 14.08 14.09 14.83 12.89 13.79 9.52 13.93 13.98
dibromomethane
14.03 14.97 13.89 15.63 12.47 15.23 10.03 15.51 16.02
1,2-dichloropropane
14.25 14.44 14.00 15.39 12.51 14.83 12.04 14.54 14.77
bromodichloromethane 14.39 14.92 14.20 15.94 12.83 15.48 9.68 15.22 15.60
2-chloroethyl vinyl ether
15.48 15.57 14.92 16.52 13.80 16.08 13.32 15.81 16.01
cis
-1,3-dichloropropene 15.54 15.96 15.46 16.76 14.18 16.21 13.19 16.20 16.36
toluene
15.95 16.53 16.74 17.23 15.48 16.30 13.55 16.58 16.57
tetrachloroethene
16.58 17.67 17.92 18.13 16.94 16.88 13.77 17.51 17.35
trans
-1,3-dichloropropene 16.61 16.87 16.23 17.78 14.91 17.39 14.47 17.16 17.45
2-bromo-1-chloropropane 16.71 17.13 16.48 17.88 15.46 17.28 14.43 17.32 17.52
1,1,2-trichloroethane
16.91 17.13 16.45 18.10 15.13 17.76 14.23 17.49 17.74
dibromochloromethane 17.18 18.01 17.20 18.71 16.03 18.28 13.30 18.50 18.86
1,3-dichloropropane
17.36 17.57 16.86 18.38 15.33 17.99 15.64 17.91 18.10
1,2-dibromoethane
17.56 18.35 17.58 18.92 16.34 18.46 14.49 18.77 19.16
chlorobenzene
18.42 19.05 18.97 19.69 17.79 18.91 16.31 19.27 19.38
ethyl benzene
18.47 19.15 19.31 19.79 18.26 18.83 16.14 19.25 19.09
1,1,1,2-tetrachloroethane 18.53 19.13 18.87 19.83 17.78 19.14 16.02 19.29 19.39
m
-xylene
18.69 19.28 19.62 19.98 18.48 19.02 16.42 19.27 19.17
p
-xylene
18.71 19.28 19.62 19.99 18.48 19.02 16.45 19.27 19.17
1-chloro-2-fluorobenzene 19.08 19.44 19.14 20.20 18.16 19.50 17.28 19.61 19.67
o
-xylene
19.37 20.01 20.22 20.66 19.07 19.74 17.26 20.07 20.02
styrene
19.45 20.04 20.10 20.69 18.93 19.92 17.44 20.25 20.33
bromoform
19.49 20.56 19.96 21.08 18.58 20.64 15.88 21.19 21.63
isopropyl benzene
19.86 20.60 20.77 21.23 19.80 20.20 17.54 20.54 20.35
bromobenzene
20.47 21.30 21.09 21.83 19.92 21.08 18.32 21.65 21.78
n
-propyl benzene
20.51 21.22 21.43 21.89 20.46 20.87 18.20 21.19 20.99
1,4-dichlorobutane
20.56 20.71 19.95 21.54 18.94 21.14 19.02 21.01 21.16
1,1,2,2-tetrachloroethane 20.62 20.83 20.21 21.84 19.06 21.49 17.72 21.19 21.41
2-chlorotoluene
20.76 21.47 21.55 22.10 20.42 21.22 18.66 21.68 21.66
1,3,5-trimethylbenzene
20.81 21.52 21.88 22.17 20.75 21.15 18.50 21.42 21.31
1,2,3-trichloropropane
20.84 21.08 20.42 21.93 19.22 21.61 18.81 21.45 21.65
4-chlorotoluene
21.03 21.59 21.67 22.28 20.52 21.46 19.04 21.68 21.76
tert
-butylbenzene
21.32 22.04 22.26 22.69 21.31 21.62 19.06 21.98 21.72
1,2,4-trimethylbenzene
21.42 22.11 22.44 22.78 21.32 21.79 19.15 22.09 22.02
sec
-butylbenzene
21.60 22.38 22.59 23.04 21.69 21.95 19.16 22.29 22.04
p
-isopropyl toluene
21.81 22.60 22.87 23.26 21.91 22.17 19.30 22.49 22.24
1,3-dichlorobenzene
21.95 22.77 22.66 23.33 21.54 22.49 19.87 22.95 23.03
1,4-dichlorobenzene
22.09 22.93 22.77 23.48 21.64 22.68 20.00 23.15 23.30
n
-butylbenzene
22.47 23.25 23.46 23.92 22.53 22.85 20.12 23.18 22.89
1,2-dichlorobenzene
22.76 23.52 23.30 24.10 22.13 23.36 20.73 23.84 23.96
4-bromo-1-chlorobenzene 23.77 24.82 22.18 25.28 23.37 24.50 21.55 25.15 25.33
1,2-bromo-3-chloropropane 24.02 24.75 23.96 25.38 22.78 24.98 21.70 25.26 25.54
hexachlorobutadiene
25.03 26.37 26.42 26.82 25.55 25.53 22.42 26.41 26.15
1,2,4-trichlorobenzene
25.13 26.16 25.95 26.66 24.79 25.77 22.96 26.37 26.55
naphthalene
25.64 26.61 26.30 27.13 24.98 26.40 23.70 27.18 27.45
1,2,3-trichlorobenzene
25.94 27.04 26.63 27.57 25.41 26.72 23.81 27.46 27.65
ChoosingColumns for Subsets of
Method 502.2/8021CompoundLists
TableX shows the elution times for com-
pounds listed inEPAMethod 502.2 under
theGC conditions given.Analystsmonitor-
ing subsets ofMethod 502.2 compounds
may find one of these columns to bemore
suitable for the analysis than a commonly
used volatile phase.
