PVC Supported Liquid Membrane and Carbon Paste Potentiometric Sensors Incorporating a Mn(III)-Porphyrin for the Direct Determination of Undissociated Paracetamol
Publication Type:Journal Article
Source:Electroanalysis, WILEY-VCH Verlag, Volume 20, Number 18, p.2009–2015 (2008)
Keywords:Carbon paste, ISE, Mn(III)-porphyrin, Neutral guest, paracetamol
PVC supported liquid membrane and carbon paste potentiometric sensors incorporating an Mn(III)-porphyrin complex as a neutral host molecule were developed for the determination of paracetamol. The measurements were carried out in solution at pH 5.5. Under such conditions paracetamol exists as a neutral molecule. The mechanism of molecular recognition between the Mn(III)-porphyrin and paracetamol, leading to potentiometric signal generation, is discussed.
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