Preliminary Investigation Of Potentiometric Stripping Analysis At The Gel Stablized Wateroil Interface

Po t en t i ometric s t ripping ana l ys i s (PSA) was appliedrnt o the interface between two immiscible electrolyte solutionsrn(IT I ES). The analysis was done on anions of t hi ocyarnnate, perchlorate and nitra te .rnPo l yviny l chlo r ide- nitrobenzene (PVC - nb ) gel ' .... asrnprepared fo l l owing the pr ocedure in troduced by Senda e t a lrnI Bunseki Kagaku , 33 (1 98 4 ) E 371] and t he PVC- nb gel e le c trodernwa s cons t r ucted us ing polytetrafluor oet hylene (PTFE)rnt ub ing as a main ce l l body .rnThe behavi our of t he cell was charac terized by ac andrndc cyclic voltammetry and r e pr oducible vo l tammog r ams we rernobt a ined showing t ha t the i on transpor t pr ocess es in bothrnphases i s dif f usion controlled . The r e ve r s i bi li t y of thernsys tem ·.. .. a s also t es ted us ing cu rrent r eve rs a l techniques .rnThe dependence of transition time (l l on depos itionrnt i me and depos i t i on (or e nr ichment) pot enti a ls was quall~rntat i vely studied . From t his pr eliminary study the methodrn(PSAl was found t o be quite applicable for t he electro lysisrnof ions aCFOSS the ITIES.

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