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Peaks | Rtx-BAC Plus 1 tR (min) | Rtx-BAC Plus 2 tR (min) | |
---|---|---|---|
1. | Methanol | 1.340 | 1.230 |
2. | Ethanol | 1.694 | 1.470 |
3. | Isopropanol | 2.072 | 1.660 |
4. | Diethyl ether | 2.149 | 1.334 |
5. | Acetone | 2.256 | 1.589 |
6. | Methylene chloride | 2.405 | 1.703 |
7. | MTBE | 3.185 | 1.660 |
8. | Hexane | 3.683 | 1.660 |
9. | Chloroform | 3.956 | 2.667 |
Peaks | Rtx-BAC Plus 1 tR (min) | Rtx-BAC Plus 2 tR (min) | |
---|---|---|---|
10. | MEK | 4.210 | 2.543 |
11. | Ethyl acetate | 4.524 | 2.414 |
12. | Benzene | 5.390 | 2.883 |
13. | Trichloroethylene | 6.306 | 3.522 |
14. | MIBK | 8.101 | 5.775 |
15. | Toluene | 8.162 | 5.440 |
16. | Ethylbenzene | 10.286 | 7.681 |
17. | m-Xylene | 10.487 | 7.879 |
18. | p-Xylene | 10.487 | 7.879 |
19. | o-Xylene | 10.990 | 8.467 |
Columns | Rtx-BAC Plus 1 30 m, 0.32 mm ID, 1.8 µm (cat.# 18004) |
---|---|
and Rtx-BAC Plus 2 30 m, 0.32 mm ID, 0.6 µm (cat.# 18006) | |
using Rxi guard column 5 m, 0.32 mm ID (cat.# 10039) | |
with universal “Y” Press-Tight connector (cat.# 20405-261) | |
Standard/Sample | |
Diluent: | Water |
Conc.: | 50 µg/mL each inhalant |
Injection | headspace-loop split (split ratio 50:1) |
Liner: | 1 mm straight inlet liner (cat.# 20972) |
Headspace-Loop | |
Inj. Port Temp.: | 220 °C |
Instrument: | Tekmar HT3 |
Inj. Time: | 3 min |
Transfer Line Temp.: | 125 °C |
Valve Oven Temp.: | 125 °C |
Sample Temp.: | 70 °C |
Sample Equil. Time: | 5 min |
Vial Pressure: | 30 psi |
Pressurize Time: | 2 min |
Loop Pressure: | 20 psi |
Loop Fill Time: | 1 min |
Oven | |
Oven Temp.: | 40 °C (hold 4 min) to 120 °C at 10 °C/min (hold 0 min) |
Carrier Gas | He, constant flow |
Linear Velocity: | 50 cm/sec |
Detector | FID @ 240 °C |
---|---|
Make-up Gas Flow Rate: | 30 mL/min |
Make-up Gas Type: | N2 |
Instrument | Agilent/HP6890 GC |
Notes | The Rtx-BAC Plus 1 and Plus 2 columns were connected to the injection port using a ~12 inch section of guard column between the injection port and the universal Y Press-Tight connector. Headspace concentrator courtesy of Teledyne Tekmar, Mason, OH. |
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