Hatip M.Koçak S.Dursun Z.2024-07-222024-07-22202310400397http://akademikarsiv.cbu.edu.tr:4000/handle/123456789/12000In this study, simultaneous determination of toxic hydrazine and nitrite was performed on composite electrodes of poly(Nile blue)(NB), carbon nanotube(CNT) and gold nanoparticles(AuNPs). The prepared AuNPs/CNT/poly(NB)/GCE was used for as a sensor platform for individual and simultaneous determination of hydrazine and nitrite. Electrodes were characterized by HRTEM, SEM, XPS, EIS. The LOD for nitrite and hydrazine was 5.0 μM and 3.1 μM at AuNP/CNT/poly(NB)/GCE, respectively. Also, sensitive amperometric determinations of hydrazine and nitrite were performed and LOD were calculated as 0.33 μM and 0.68 μM, respectively. The method was applied to sausage and river water samples and recovery results were obtained in the range 85–115 %. © 2023 Wiley-VCH GmbH.EnglishCarbon nanotubesChemical detectionElectrodesFiber optic sensorsHydrazineMetal nanoparticlesAu nanoparticleCarbon nanotubes (CNT)Electrochemical determinationGold nanoparticleGold NanoparticlesHydrazine and nitriteModified carbonPoly(nile blue)SimultaneousSimultaneous determinationsGold nanoparticlesArticle10.1002/elan.202200132