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Chemistry Forums for Students => Analytical Chemistry Forum => Topic started by: Element on February 02, 2007, 05:28:40 PM

Title: Analyzing a sample
Post by: Element on February 02, 2007, 05:28:40 PM

Hi all, i am a new member here. I would be really happy of anyone can answer my question. I wanted to run GC-MS and NMR on a solid unknown sample. But it doesn't dissolve in any solvent. What should I do?

Title: Re: Analyzing a sample
Post by: natas on February 15, 2007, 05:58:07 AM

What solvents did you already used?

You don't have any idea what kind of material it is?

Title: Re: Analyzing a sample
Post by: J.I. on February 24, 2007, 07:39:05 AM

for the GC - MS, try to get the melting point of your sample, if the mp is very high, then you can't run it for the GC - MS because your sample should be in the gaseous phase before it can be bombarded in the GC - MS.

Title: Re: Analyzing a sample
Post by: Albert on February 28, 2007, 05:14:22 AM

You could even get an IR spectrum, which might help you identify the substance, but, still, you must find a solvent that dissolves it.

Title: Re: Analyzing a sample
Post by: english on February 28, 2007, 07:11:14 PM

Are you sure it doesn't dissolve in any solvent?

Have you tried inert solvents?