Conducting polymer based potentiometric detection applied to the determination of organic acids with narrow-bore LC systems

Determination of sulfamethoxazole in pharmaceutical formulations by flow injection system/HPLC with potentiometric detection using polypyrrole electrode

“…Although HPLC and flow injection analysis methods using coated electrodes with conducting polymers as amperometric detector have been reported for determination of some organic and biological molecules, [28][29][30] limited information is available about the use of conducting polymers as a potentiometric detector. 31 However, to the best of our knowledge this is the first time that the PPy potentiometric detector in HPLC for determination of sulfamethoxazole is reported. The PPy film was electrochemically deposited onto glassy carbon electrode.…”