We have synthesized a polymer that attains a fairly good removal of manganese ions from synthetic waters contaminated with MnCl2. After many tests, we have deemed it a decent adsorbent. All in all, the goal was Mn(II) removal.

Nonetheless, if we want to publish this, I fear we will have to explain whether chelated Mn(II) is oxidized to Mn(III) or not, because samples were not really protected from air --although they were not intentionally areated either. I am not very good at analytical chemistry, but AFAIK, FAES and ICP-OES are not charge-specific...