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Sample Preparation - Organic tin (Sn) digestions

 
We are trying to dissolve or digest samples of tin mesoporphyrin IX (chloride) using mixes of the mineral acids without any success. Do you have any suggestions how to transfer this compound to the liquid ? Any information will be deeply appreciated.
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There are a few options for getting the tin mesoporphyrin into solution.

  1. Fusion: Add ~ 1g of sample to a platinum crucible. Cover with sodium carbonate and ash at approximately 450 - 500C overnight (or at least 3-4 hours). You should be able to dilute the resulting fusion in HCl.
  2. Digestion: Perchloric acid reflux in a Kjeldahl apparatus.
  3. Dissolution: Dissolve the sample in 2-butoxy ethanol. This would behave like water in a plasma, and you could use standard additions to quantify Sn.

If none of these options are feasible for your laboratory, give us a call and we discuss other alternatives. Please let us know if you have any additional questions.

Posted: 09/06/18 04:19:29

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