Levent, AbdulkadirAltun, AhmetTas, SuleymanYardim, YavuzSenturk, Zuhre2025-05-102025-05-1020151040-03971521-410910.1002/elan.2014006272-s2.0-84929131202https://doi.org/10.1002/elan.201400627https://hdl.handle.net/20.500.14720/14477Senturk, Zuhre/0000-0002-0356-9345; Yardim, Yavuz/0000-0002-9587-096X; Levent, Abdulkadir/0000-0001-5792-419XIn this paper, an electrochemical application of bismuth-film electrode (BiFE) fabricated via ex-situ electrodeposition onto a glassy carbon electrode for testosterone determination was investigated in aqueous and aqueous/surfactant solutions. In cyclic voltammetry, the compound showed one irreversible and adsorption-controlled reduction peak. The BiFE revealed good linear response in the examined concentration range of 1 to 45 nmolL(-1) testosterone in Britton-Robinson buffer, pH 5.0 containing 3 mmolL(-1) cetyltrimethylammonium bromide. The limit of detection was 0.3 nmolL(-1) (0.09 ng mL(-1)). Finally, the BiFE was satisfactorily applied for quantitation of testosterone in both pharmaceutical (oil-based ampoule) and biological (human urine) samples.eninfo:eu-repo/semantics/closedAccessAdsorptive Stripping VoltammetryBismuth-Film ElectrodeCetyltrimethylammonium BromidePharmaceutical And Biological SamplesTestosteroneArticle275Q2Q212191228WOS:000356605100020