Chromatography Forum

Chromatography Forum is a public discussion group where you can post questions, news, or messages of interest to chromatographers everywhere, but you must be registered to participate (registration is FREE). If you are a registered user, please log in.
http://www.chromforum.org/

ASTM 5830

http://www.chromforum.org/viewtopic.php?t=3350

Page 1 of 1

ASTM 5830

Posted: Wed Feb 01, 2006 5:18 pm
by ozric
Hello all...

I have recently started analysing waste solvents using ASTM D 5830. Column DB 1701(Varian equivalent) however Hexane and IPA are co-eluting?
Any suggestions to achieve separation??(other than change columns :wink: )
I have tried various temp. programmes but to no avail!

Regards

Oz

1701

Posted: Wed Feb 01, 2006 5:30 pm
by chromatographer1
You can use different starting temperatures as the 1701 has multiple selectivity mechanisms which compete differently at different temperatures.

Other than that, use a small amout of another polar column to pull IPA behind hexane.

Rod
All times are UTC
Page 1 of 1
Powered by phpBB® Forum Software © phpBB Limited
https://www.phpbb.com/