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A spectrophotometric method has been developed for the determination of Cu(II) using 2Hydroxy-1-Naphthalene carboxaldehyde phenyl hydrazone as an extractive reagent. The reagent forms a coloured complex, which has been quantitatively extracted into n-butanol at pH 9.2. The method obeys Beer’s law over arrange from 1 to 10 ppm. The Molar absorptivity and Sandell’s sensitivity were 0.97 × 10 4 L mol -1 cm -1 and 0.26 µg·cm -2 respectively. The proposed method is very sensitive and selective. The method has been successfully applied to synthetic and commercial samples.

international letters of chemistry, physics and astronomy

Development of Method for Extractive Spectrophotometric Determination of Cu(II) with 2-Hydroxy-1-Naphthalene Carboxaldehyde Phenyl Hydrazone as an Analytical Reagent