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How can I analyze iron (FeII) and iron (FeIII) by CE?

Reference Number: AA-01252 Created: 02/26/2013 03:04 PM Last Updated: 06/20/2013 12:34 PM

There are two viable options for analysis of iron (II) and iron (III) by CE.

Option 1. Add EDTA and analyze the iron-EDTA complexes. Use the CElixir OA Kit because the complexes will be anionic.

Option 2. Use off-line selective complexation of the iron (II) and (III) species and perform the analysis by MEKC. Use the CElixir SDS Kit in this case. Takagai & Igarashi describe the process in a research article available here. This was reported to be the most effective method to achieve separation of the two analytes.

Option 3. Use an Imidazole-Acetic acid buffer, pH4. You may not get separation of Fe(II) and Fe(III) but there will be CE migration. This buffer is however not supplied by MicroSolv.

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