| Summary: | ABSTRACT
Benzyl eugenol was synthesized from benzyl chloride and eugenol in alkaline solution. Analysis of the products was carried out by Gas Chromatograph (GC) and Infra Red (IR), 1H NMR and Mass Spectroscopies (MS). Results of the analysis revealed that the products were benzyl eugenol and its isomer. The product obtained was then utilized as membrane components for ion selective electrode (ISE) and the performance of the membranes were characterized.
Results of the study showed that benzyl eugenol may be utilized either for cationic or anionic ISE membrane components. For cationic ISE, benzyl eugenol acts simultaneously as ionophore and plasticizer, which selectively respond ammonium and potassium ions from their interferences, i.e. : sodium, calcium, magnesium, barium, nickel and aluminum ions. The potential response for ammonium and potassium were 51,7 and 51,9 mV/decade, respectively and their respond times at concentration of 10-3M were respectively 230 and 270 s. For anionic ISE, benzyl eugenol can effectively be used as plasticizer for perchloric ion membrane based on TOMA-CI ionophore in PVC. Results of the study suggested that the interaction of membrane phase with anions followed the Hofmeister's series. It was surprising that the selectivity of the membrane using benzyl eugenol as plasticizer was better than that using the common plasticizer such as diocthyl sebacate (DOS) and amyl eugenol.
Key words : Ion Selective Electrode, plasticizer, ionophore, benzyl eugenol
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