Pure Chromatography
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Solvents on DiatoSorb-WHP Packed Column
Peaks | |
---|---|
1. | Methanol![]() |
2. | Ethanol![]() |
3. | Acetone![]() |
4. | Methyl ethyl ketone (MEK)![]() |
Peaks | |
---|---|
5. | Isopropyl acetate![]() |
6. | 2-Nitropropane![]() |
7. | Methyl isobutyl ketone (MIBK)![]() |
8. | Toluene![]() |

GC_PH1176
Column | 20% OV-101, 0.1% CW-1500, 100/120 mesh on DiatoSorb-WHP, SilcoSmooth tubing, 3 m, 1/8 in OD, 2 mm ID |
Sample | |
Conc.: | Equal proportions of neat compounds |
Injection | |
Inj. Vol.: | 0.1 µL on-column |
Inj. Temp.: | 200 °C |
Oven | |
Oven Temp.: | 100 °C (hold 5 min) |
Carrier Gas | He, constant flow |
Flow Rate: | 40 mL/min |
Detector | FID @ 250 °C |
Instrument | Agilent 7890B GC |
Notes | The particle size distribution of DiatoSorb material is more uniform than that of commercially available diatomaceous earth material. For this application, the pressure required to achieve a flow rate of 40 mL/min He (@ 100 °C) on a diatomaceous earth packed column is 50 psi, whereas it is only 33.7 psi on a DiatoSorb packed column. Furthermore, the narrower particle size distribution of the DiatoSorb material results in highly efficient columns. |
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