I am studying an aqueous photocatalytic system where superoxide radicals generate upon light irradiation. The system does not contain any biomolecules or bioorganisms. I need to study the effect of removing superoxide radicals, and for that, I need to add a scavenger. I searched in the literature but everybody has used benzoquinone for this purpose. The problem with using benzoquinone when I used it was it bound with my analyte so tightly that I could not separate the analyte by centrifuging or filtering. The literature does not provide the method of how they got rid of benzoquinone. Can you please help me with this if you have a similar experience? If not, please suggest to me some other superoxide radical scavengers that you have used in similar experiments. Thanks in advance.
You may find some non-benzoquinone inspiration in the attached article. Can't testify to the ease of separation though because I didn't use these compounds experimentally.
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