Extractive Spectrophotometric Determination of copper with p-Methylisonitrosoacetophenonehydrazone

Abstract

A simple and rapid extractive spectrophotometric method for the determination

of Cu(II) is studied. The complex formed between Cu(II) and

p-methylisonitrosoacetophenonehydrazone is extracted into chloroform

from aqueous solution of pH 7.0. The extracted species has an absorption

maximum at 510 nm and obeys Beer's law over a range of 0.1–1.0 μg

mL^–1 of Cu(II); the molar absorptivity being 6.28 x 10³ L mole^–1 cm^–1.

Interference from foreign ions has also been studied.