Non-Extractive Spectrophotometric Determination of Copper in Alloys Samples Using 2,4-Dihydroxyacetophenone acetoylhydrazone

摘要

ABSTRACT A very simple, highly selective and non-extractive spectrophotometric method for the trace amounts of copper(II) has been developed. 2,4-Dihydroxyacetophenone acetoylhydrazone(DAAH) has been proposed as a new analytical reagent for the direct non-extractive spectrophotometric determination of copper(II). The reagent reacts with copper(II) in acidic medium(pH 4.0) to form a pale yellow coloured 1: 1 (M : L) complex. The reaction is instantaneous and the complex shows maximum absorbance .