[woooah]

What are some ways to remove ethanol from a sample?  I am working with a machine that is sensitive to volotiles in high (10ppm) concentrations.  I've tried roto evaporation, low heat (55C for 2hr), heat under vacuum.  Nothing seems to remove the ethanol to a low enough concentration without removing the compounds I am trying to analyze (vanilla extract).  Thanks for your help.

[randoft]

i think the rotatory evaporator is the most common method to remove ethanol from your sample. Is it ethanol volatile? From your infomation, u notice that u using a machine which is sensitive to volatile compound. But ethanol is not volatile, unless u had added in some volatile solvent to your sample. If not, ethanol will not influence the accuracy of your machine.

[enahs]

If ethanol is causing a problem, chemically change it.
There are many reactions, check an organic chemistry book.

Your overall information is too vague though to be any more specific.