Spectrofluorimetric Study and use of Tris (3-(2-Hydroxy acetophenone)Propyl) Amine) as a Novel Sensing Material for Preparation of Zn2+ Potentiometric Sensor

Spectrofluorimetric studies on the binding properties of tris (3-(2-hydroxyacetophenone)propyl) amine) (l) toward different heavy metal ions in acetonitryl solutionrevealed its selective 1:1 complexation with zinc ion. consequently, l was used as a suitableionophore for the preparation of new plasticized pvc membrane-selective electrodes for thedetermination of zinc ion. the sensor exhibits a nernstian response for zn(ii) over a wideconcentration range (2.0×10-7-1.0×10-1 m) and detection limit of (9.6 ×10-8 m). the bestperformance was obtained with a membrane composition of pvc (30%), orthonitrophenyloctylether (o-npoe) (64%), ionophore (l) (5%) and potassium tetrakis(ktpcipb) (1%). the sensor exhibits the advantages of fast response time (12 seconds),operational lifetime (24 weeks) and good selectivity co-efficient for zn(ii) over an alkali,alkaline earth and transition metal ions. the electrode was used as indicator electrode inpotentiometric titration of zn(ii) with ethylenediaminetetraacetic acid (edta) and in thedetermination of zn2+ ion in real samples