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ortho, meta and para- elution order?
Posted: Wed Oct 01, 2008 10:34 am
by thohry
I am analyzing essential oil. Sometimes there are peaks of isomers (o, m, p), but the orders are not defined.
In general, is there any order of elution among them?
Thanks
Posted: Wed Oct 01, 2008 11:23 am
by Don_Hilton
Order will depend on the stationary phase in the column. I typically have a retention time or retention index table handy when I do this kind of work.
Posted: Wed Oct 01, 2008 12:39 pm
by WK
thohry,
Which essential oil components do you refer to?
And in which essential oils do they occur?
Thanks
WK
Posted: Wed Oct 01, 2008 1:23 pm
by thohry
Hi WK
That is the essential oils of new trees, probably they have no official name yet (or I do not know). I will post the compounds' names later, now I do not have in hand.
Posted: Wed Oct 01, 2008 4:42 pm
by Bryan Evans
Below is an application for essential oils separated on Cadenza CD-C18:
http://www.silvertonesciences.com/files/TI355E.pdf
Posted: Thu Oct 02, 2008 1:06 pm
by thohry
Great, now I know they can analyze essential oil by HPLC for the first time.