Double indicator electrode-containing cell for the micro-determination of chlorpromazinium chloride <img src='http://www.niscair.res.in/jinfo/hyphen.gif' border=0> A potentiometric and spectral study </span>

Abstract

A double indicator electrode-containing cell of both chlorpromazinium (Cpn⁺) and chloride (Cl^-) selective electrodes has been prepared. The cell exhibits a super - Nernstian value of approximately 96 mV/pCpn and a working <i style="mso-bidi-font-style:normal">p</i>H range of 3.8-7.8. The cell also exhibits good selectivity of chlorpromazinium chloride (CpnCl) with respect to a large number of inorganic salts. The potentiometric study and the X-ray photoelectron spectroscopy suggest a working mechanism of the double indicator-electrodes that can be explained by the adsorption of Cpn⁺ on the surface of the membrane’s electrode as well as the screening effect of Cl^- on the chloride electrode surface.