Detection of Ethanol using Purge and Trap

[jeffsmitheverybody]

Hello,

We have a client that is looking to have us run analysis for Ethanol at a detection limit of 400 ug/L. We were looking to see if anyone has tried Purge and Trap and if they have made any changes from the typical 820B method?

Are you still using a #10 OI trap (tenax/silica gel)

Any help would be greatly appreciated.

[Karen01]

Never mind ... I got my units mixed up

[jeffsmitheverybody]

Update:

I am currently working on a #7 Trap. Was able to achieve the 400ug/L in Scan mode. Now working on getting lower detection limits.

I am going to run with the following operation conditions

sample temp 60C
11 min purge at 40C
2 min desorb at 190C
standard water management settings

I am also going to try to run in SIM mode as the retention time has been established using Scan mode.

[LindseyPyron]

You should be able to hit that level easily. See an application note below:

www.estanalytical.com/presentations/California Oxygenates and 8260 App Note.pdf