ISSN: 7027-2221

Author : Majeed Mohammad, Adnan


Spectrophotometric Determination of Copper(II) using Murexide Reagent

Adnan Majeed Mohammad; Ahmed Jamaal Ibraheem; Mustafa Abdullah Dhiab

karbala journal of pharmaceutical sciences, Volume 7, Issue 11, Pages 339-347

a simple and sensitive spectrophotometric method has been developed for
determining copper (II) with Murexide and this method depends on formation of
a stable yellow greenish colored complex at pH=5 where it has a maximum
absorption at 476 nm , the optimal conditions for the formation of complex were
studied . It appeared that the complex real-time, stable complex consists for 30
days . the molecular ratio was identified by the continuous variation method and
mole ratios . the ion reactive ratio ( ion : Reagent ) were 1:2 , Lambert beer's
law obeyed in concentration range of 10 - 80 μg.ml-1 , relative standard
deviation 1.04% , Limit of detection 0.31 μg.ml-1 and molar absorptivity was
1.2x105 L.mole-1.cm-1 . By this method could determine copper (II) with high
precision , accurate and sensitive and agree on high-water samples.