SF6 column and conditions?
Posted: Wed Jul 18, 2007 11:04 pm
by AICMM
I am looking for chromatographic conditions (column, temp, flow) for separating SF6 from air and water. I am looking at headspace analysis of SF6 from water samples.
Suggestions?
Best regards.
SF6
Posted: Thu Jul 19, 2007 1:03 pm
by chromatographer1
Hi Matthew,
Porapak Q 100/120 3 meters in a nickel tube or glass. 60°C 40cc/min or less elutes before water and after air, almost coeluting with ethylene. Water will elute in 15? minutes or so SF6 in 3 min air in 1 min.
Alternative is a 1% SP-1000 on Carbopack B 80/100 mesh. Same conditions
Alternative is 5% Krytox 143a on Carbopack B 80/100 mesh but not sure about the water elution.
best wishes,
Rod