Emir, GamzeKarakaya, SerkanDilgin, Yusuf2025-01-272025-01-2720202093-8551https://doi.org/10.33961/jecst.2019.00605https://hdl.handle.net/20.500.12428/23343In this study, pyrocatechol violet (Pcv) is proposed for the first time as an efficient electrocatalyst for oxidation of sulfide and flow injection analysis (FIA) of sulfide. A graphite pencil electrode (GPE) was modified with Pcv via immersion of the GPE into 0.01 M Pcv solution for 15 min. Cyclic voltammograms (CVs) demonstrated that Pcv/GPE exhibits a good electrocatalytic performance due to shift in the potential from +400 at bare GPE to +70 mV at Pcv/GPE and obtaining an enhancement in the peak current compared with the bare GPE. A linear range between 0.25 and 250 mu M sulfide with a detection limit of 0.07 mu M was obtained from the recorded current-time curves in Flow Injection Analysis (FIA) of sulfide. Sulfide in water samples was also successfully determined using the proposed FI amperometric methods.eninfo:eu-repo/semantics/openAccessGraphite Pencil ElectrodePyrocatechol VioletElectrocatalytic OxidationSulfideFlow Injection AnalysisArticle11324825610.33961/jecst.2019.00605Q4WOS:0005644635000042-s2.0-85090192478Q2