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- Posts: 2
- Joined: Thu Jan 10, 2019 9:15 am
at this moment we analyze phenolsulfonic acid (para and ortho) using hplc and a Waters xbridge phenyl column (in a 10 mM ammoniumcarbonate buffered system). At this moment the samples are simply prepared dissolving the samples and neutralizing the remaining sulfuric acid in the samples using sodium hydroxide and filtration of the samples. The column lifetime is very short and I wonder if this could be caused bad sample preparations. Any ideas about this or suggestions?
Regards, Mark