5.00
10.00
15.00
20.00
0
200000
400000
600000
800000
1000000
1200000
1400000
1600000
1800000
2000000
2200000
2400000
2600000
2800000
3000000
3200000
Time-->
Abundance
TIC:A3021724.D
Rtx-VRX
The optimizedoven conditionswere as follows: 40°C (hold 1
min.) to 75°C@ 2°C/min. (hold 1min.) to 220°C@ 22°C/min.
(hold2min.). TheGC runtimewas 26minuteswitha cycle
time of just over 30minutes. TheRtx-VRXhas the same close
elutionof 1,1-dichloroethene / TBAas theRtx-Volatiles
phase. These target analytes share ion59. A lower starting
temperature or a longer initial hold timewill easily resolve
these analytes.On this stationaryphase the internal standard
chlorobenzene-d5 and 1,1,1,2-tetrachloroethane, which share
ion 117, coelutewhich requires either changing the internal
standard choice or changing thequantification ion to82. The
Rtx-VRX is a good choice forEPAMethod 8260.
