Oil & Water - the horrible mix

  • Thread starter androol
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Main Question or Discussion Point

I've been trying to determine the concentration of a vegie oil (0.9 g/mL) in dilute(~2,4 w%) oil-water emulsions that are badly aerated and with gas bubbles.

I tried the density method, weighing the samples and then vacuum suck them to rid the bubbles - in order to get an accurate volume reading. But then I realized that water was vaporizing a little. and the dilute samples make the determination really hard.

Is there a way that's fast and easy to do that? chromotography?

Please help me... on my knees...
 

Answers and Replies

chemisttree
Science Advisor
Homework Helper
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Add THF or a mixture of ethyl acetate and ethanol to break the emulsion. The water should be easy to determine on the diluted sample using a Karl-Fisher titration.
 

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