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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Alembic Pentameter on July 13, 2020, 09:09:57 PM

Title: Comparing three unknown samples to determine if they are the same or not?
Post by: Alembic Pentameter on July 13, 2020, 09:09:57 PM

I have three chemical samples.  It's unknown if they are identical solutions, solutions of the same substance at different concentrations, or different substances in solution.

Is there a best / ideal way to go about testing to prove which of the above scenarios it is? 

Is there a way to accomplish this with a panel of gc-ms scans?

I assume that the weight ratio being inconsistent by +/-1.25% is enough to rule out 'identical solutions'.

Title: Re: Comparing three unknown samples to determine if they are the same or not?
Post by: shchavel on July 17, 2020, 07:55:56 AM

Hello! It's depends of your resources (equipment, reagents, knowledges). What do you have? What you prefer?