Solvents on DiatoSorb-WHP Packed Column

Standard/Sample
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
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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