Abstract
The electrochemical behaviors of retinoids on glassy carbon and electrodeposited metal electrodes were investigated in various aqueous or nonaqueous containing supporting electrolytes, respectively. Retinal, retinol, all- trans-retinoic acid (all- trans-RA ) and 13- cis-retinoic acid (13- cis-RA) can be separated at the thin-film lead deposited glassy carbon electrode in 0.1 M tetrabutylammonium hydroxide. The electroreduction process is applied for the simultaneous quantitative determination of retinoids in cosmetics and pharmaceuticals. Comparison with results obtained from high performance liquid chromatography shows good agreement.
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