GC Analysis of Water in Ethanol (0.25% Standard) on Watercol™ 1460
CONDITIONS
column
Watercol 1460, 30 m x 0.25 mm I.D., 0.20 μm; two identical columns installed in the same inlet, each going to a separate detector (29695-U)
oven
45 °C (4 min), 5 °C/min to 75 °C, 10 °C/min to 220 °C (10 min)
inj. temp.
250 °C
detector
FID, 250 °C, TCD, 200 °C
carrier gas
helium, 20 cm/sec (measured in each column at an oven temperature of 135 °C)
injection
1 μL, 50:1 split
liner
4 mm I.D., split/splitless type, wool packed single taper FocusLiner™ design
sample
water at 0.25% (v/v) in ethanol
Description
Analysis Note
The "Watercol" series of ionic liquid capillary GC columns are characterized by their ability to produce a sharp peak shape for water, sharp enough so that water can be integrated and quantified. This application shows a calibration standard (0.25% water in ethanol) on Watercol 1460.
Legal Information
FocusLiner is a trademark of SGE Analytical Science Pty Ltd.
Watercol is a trademark of Sigma-Aldrich Co. LLC