Copper(II)-selective membrane electrode based on a recently synthesized naphthol-derivative Schiff’s base

摘要: A PVC membrane electrode for copper(II) ions based on a recently synthesized naphthol-derivative Schiff’s base as carrier was prepared. The sensor exhibits Nernstian response Cu2+ over wide concentration range (5.0 × 10–6–5.0 10–2 mol/L) with detection limit of 3.1 10–6 mol/L (0.2 μg/mL). It has very short time about 5 s and can be used ¶3 months without any divergence in potential. proposed revealed good selectivities variety other cations including alkali, alkaline earth, transition heavy metal could pH 4.0–7.0. successfully applied to the direct determination potentiometric titration copper ion.