18389

Iodide selective membrane electrode based on copper (II)-bis-Nphenilsalicyldenaminato complex.

Benvidi Ali نويسنده , Elahizadeh Mehdi نويسنده , Zare Hamid Reza نويسنده , Vafazadeh Rasoul نويسنده

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Nphenilsalicyldenaminato complex as a novel sensing material is successfully developed. The electrode showed a good selectivity for iodide ion with respect to common inorganic anions. The sensor exhibited a good linear response with slope of -58.6 ± 0.4 mV per decade over the concentration range of 5.0 × 10^-6 to 1.0 × 10^-1 mol L^-1, and a detection limit of 3.0 × 10^-6 mol L^-1 of I– ion. The electrode response was independent of pH in the range of 3.0 - 10.0. The proposed sensor was applied as an indicator electrode in potentiometric titration of I– with Ag+ ion, and to determine the iodide in sodium chloride salt.

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