Trace element analysis techniques

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For qualitative determination of sulfur content in a polymer sample that is soluble in THF and toluene but not in water, X-ray fluorescence (XRF) is recommended as the most suitable analytical technique. XRF is versatile and effective for various materials, including polymers, and can handle solubility challenges without significant issues. Other qualitative tests typically require aqueous solutions, making them less applicable in this case.
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I have a polymer sample and am interested in qualitatively determining the sulfur (sulfate group) content. Which analytical technique should I consider using? This polymer is not soluble in water but is soluble in THF and toluene. Thanks.
 
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Most of the qualitative tests for sulfur that I can recall off the top of my head involve compounds in aqueous solution. Hopefully someone has a better memory than I!

If you have access to an x-ray fluorescence service of some sort, that's probably your best bet, as XRF is used in a variety of applications (polymers, materials, metals, oils), and any solubility issues should not be a huge difficulty. YMMV.
 

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