Browsing by Author "Bekircan,O."

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    Citation Count: 12
    A novel Iron(III)-selective membrane potentiometric sensor based on 5-chloro-3-[4-(trifluoromethoxy) phenylimino] indolin-2-one
    (Bentham Science Publishers, 2015) Demir,E.; Kemer,B.; Bekircan,O.; Aboul-Enein,H.Y.
    A 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.