[uglepik]

We have a sample with some residual oxalic acid - extremely small amounts, like micrograms, but it still has to go. People tend to remove oxalic acid by digestion with nitric acid and hydrochloric acid, but we would like to avoid having to use nitric acid. Therefore...

Does anybody have experience or knowledge about whether it is possible to:

             1) Digest/oxidize oxalic acid with hydrogen peroxide without the use of any added acid?

             2) To digest/oxidize oxalic with hydrogen peroxide and hydrochlorid acid (no nitric acid)?

Any help/advice will be appreciated.

Andreas

[Corribus]

Out of curiosity, why do you want to avoid nitric acid? This is a ubiquitous digestion reagent.