Abstract
For the evaluation of the speciation of Sn in solid samples, a leaching sequence is presented, which takes into account the special properties of the element investigated. The sample is leached with ethanol (organics), 25% acetic acid (carbonates), oxalate (coprecipitation upon Fe/Mn-hydroxides), then oxidized with KMnO4 (sulfides), and finally sublimed with NH4I (cassiterite); the silicate fraction is found as the difference to the total decomposition value (e.g. LiBO2).
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