Pure Chromatography
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GHB Analysis (GBL and AMGBL) on Rtx-BAC Plus 1
Peaks | |
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1. | GBL![]() |
Peaks | |
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2. | AMGBL![]() |

GC_CF1164
Column | Rtx-BAC Plus 1, 30 m, 0.32 mm ID, 1.8 µm (cat.# 18004) |
Sample | Gamma-butyrolactone (GBL) (cat.# 34077) |
Alpha-methylene-gamma-butyrolactone (AMGBL) (cat.# 34079) | |
Injection | headspace-loop split (split ratio 10:1) |
Liner: | 1 mm straight inlet liner (cat.# 20972) |
Headspace-Loop | |
Inj. Port Temp.: | 200 °C |
Instrument: | Tekmar HT3 |
Inj. Time: | 1 min |
Transfer Line Temp.: | 125 °C |
Valve Oven Temp.: | 125 °C |
Sample Temp.: | 100 °C |
Sample Equil. Time: | 10 min |
Vial Pressure: | 30 psi |
Pressurize Time: | 2 min |
Loop Pressure: | 20 psi |
Loop Fill Time: | 1 min |
Oven | |
Oven Temp.: | 80 °C (hold 0 min) to 180 °C at 10 °C/min (hold 0 min) |
Carrier Gas | He, constant flow |
Linear Velocity: | 48 cm/sec |
Detector | FID @ 240 °C |
Make-up Gas Flow Rate: | 30 mL/min |
Make-up Gas Type: | N2 |
Instrument | Agilent/HP6890 GC |
Notes | Sample was prepared by injecting 1 µL of each standard into a capped headspace vial. The mass of each compound inside the headspace vial was 1 µg. Headspace concentrator courtesy of Teledyne Tekmar, Mason, OH. |
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