Pure Chromatography
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OVIs by Dynamic Headspace and Gerstel MACH on Rtx-624 (G43) and Rtx-WAX (G16)
| Peaks | |
|---|---|
| 1. | Methanol |
| 2. | Acetonitrile |
| 3. | Dichloromethane |
| 4. | trans-1,2-Dichloroethylene |
| 5. | Hexane |
| 6. | cis-1,2-Dichloroethylene |
| 7. | Nitromethane |
| 8. | Tetrahydrofuran |
| 9. | Chloroform |
| 10. | Cyclohexane |
| 11. | 1,2-Dimethoxyethane |
| Peaks | |
|---|---|
| 12. | Trichloroethylene |
| 13. | Methylcyclohexane |
| 14. | 1,4-Dioxane |
| 15. | Pyridine |
| 16. | Toluene |
| 17. | 2-Hexanone |
| 18. | Chlorobenzene |
| 19. | Ethyl benzene |
| 20. | m-Xylene |
| 21. | p-Xylene |
| 22. | o-Xylene |
| 23. | Tetralin |
* septum components
GC_PH00845
| Columns | Rtx-624 20 m, 0.18 mm ID, 1.00 µm (cat.# 40924) |
| and Rtx-WAX (G16) 20m, 0.18mm ID, 0.4µm (custom) | |
| using IP Deactivated Guard Column 5 m, 0.32 mm ID (cat.# 10044) | |
| with Universal “Y” Press-Tight Connector (cat.# 20405) | |
| Sample | Residual Solvents Class 2 - Mix A (cat.# 36271) |
| Residual Solvents Class 2 - Mix B (cat.# 36272) | |
| Diluent: | 0.5mL DI water/~0.2g sodium sulfate in 20mL headspace vial; components at 0.10 - 6.00µg |
| Injection | headspace-trap split (split ratio 20:1) |
| Headspace-Trap | |
| Instrument: | Tekmar HT3 |
| Inj. Temp.: | 220 °C |
| Transfer Line Temp.: | 220 °C |
| Valve Oven Temp.: | 220 °C |
| Standby flow rate: | 50 mL/min |
| Trap Standby Temp: | 40 °C |
| Trap Sweep Temp: | 40 °C |
| Preheat Mixer: | On |
| Preheat Mixer Time: | 2.0 min |
| Preheat Mixing Level: | 5 |
| Preheat Mixer Stabilize Time: | 0.5 min |
| Sample Temp.: | 80 °C |
| Sweep Flow Rate: | 75 mL/min |
| Sweep Flow Time: | 5.0 min |
| Dry Purge: | 10.0 min, flow 100 mL/min @ 25 °C |
| Desorb Preheat Temp: | 245 °C |
| Desorb: | 1.0 min @ 250 °C |
| Trap Bake Temp: | 260 °C |
| Trap Bake Time: | 6.0 min |
| Trap Bake Flow: | 450 mL/min |
| Oven | |
| Oven Temp.: | 250 °C |
| Carrier Gas | He |
| Detector | FID @ 250 °C |
| Make-up Gas Flow Rate: | 45 mL/min |
| Instrument | Agilent 6890 with Gerstel Modular Accelerated Column Heater (MACH) |
| Notes | Sample preheat time: 15.00 min. Flow rate: Constant Flow, Column 1: 0.85mL/min.; Column 2: 0.99mL/min. Gerstel temps.: Column 1: 50°C (2 min.) to 80°C at 20°C/min. (1 min.), to 200°C at 40°C/min. (2 min.) Column 2: 35°C (2 min.) to 60°C at 100°C/min. (1 min.), to 200°C at 40°C/min. (2 min.) |
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Restek Corporation, U.S., 110 Benner Circle, Bellefonte, PA 16823
Copyright © 2019 Restek Corporation. All rights reserved.
A Company of Owners
Cookies allow for a variety of features that make your visit to Restek more enjoyable. By using this website, you agree to the use of cookies in accordance with our guidelines. For more information, see our privacy policy.