Demir,E.Kemer,B.Bekircan,O.Aboul-Enein,H.Y.2024-05-252024-05-252015121573-411010.2174/15734110106661411112243252-s2.0-84920527683https://doi.org/10.2174/1573411010666141111224325https://hdl.handle.net/20.500.14517/2334A novel polyvinyl chloride (PVC) membrane sensor that is highly selective to Fe3+ ions was prepared by using 5-chloro-3-[4-(trifluoromethoxy)phenylimino]indolin-2-one (CFMEPI) ionophore. The sensor exhibits a Nernstian response for Fe3+ ions over a wide concentration range (1.0 ×10-2 −1.0×10-6M) with a slope of 46.7±0.5 mV per decade. The sensor has a response time of 20s and can be used for at least 3 months without any measurable divergence in potential. It was concluded that the sensor response was pH independent in the range of 4.0-8.61. The sensor has some advantages such as short analysis time, particularly high selectivity towards iron (III). The sensor was used successfully for direct determination of Fe3+ in several synthetic and real samples with satisfactory results. © 2015 Bentham Science Publishers.eninfo:eu-repo/semantics/closedAccessAll-solid-stateDetermination of Fe³⁺Fe³⁺-selective electrodePotentiometerPVC membraneArticleQ3Q21112935