Extraction and Spectrophotometric Determination of Copper(II) with 4- Chloroiso nitrosoacetophenone Semicarbazone

Abstract

Spectrophotometric method has been developed for the determination

of copper(II) using 4-chloroisonitrosoacetophenone semicarbazone

as a reagent. The reagent reacts with Cu(II) giving a

slight blue coloured complex which can be quantitatively extracted

into chloroform at pH 7.2-8.0. Molar absorptivity at 386 nm is

1.79517 x 10⁵. Beer's Law is obeyed in the range 0.1 μg to 10 μg.

The present method has been used for analysis of Cu(II) in real

samples as well as in binary mixtures.