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Perchloric acid buffer

http://www.chromforum.org/viewtopic.php?t=2625

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Perchloric acid buffer

Posted: Fri Sep 23, 2005 11:49 am
by Provetech
Hi,
I wonder if perchloric acid buffer is available on ESI MS spectrometer and if it can be remove in case of preparative chromatography (how ?)
The concentration is 2mL/L of water.
Thanks

Posted: Fri Sep 23, 2005 5:44 pm
by Mark Tracy
For removal of perchloric acid, I would use anion exchange. Perchlorate is strongly retained on most anion exchangers. On a smaller scale, I would use electrodialysis. Another trick would be to add a potassium salt; KClO4 is nearly insoluble in water.
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