Extraction and spectrophotometric determination of copper(II) with S,S '-bis(2-aminophenyl)oxalate


NOHUT S. , Karabocek S. , Guner S., GOK Y.

JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS, vol.20, pp.309-314, 1999 (Journal Indexed in SCI) identifier identifier identifier

  • Publication Type: Article / Article
  • Volume: 20
  • Publication Date: 1999
  • Doi Number: 10.1016/s0731-7085(99)00045-x
  • Title of Journal : JOURNAL OF PHARMACEUTICAL AND BIOMEDICAL ANALYSIS
  • Page Numbers: pp.309-314

Abstract

A new selective reagent, S,S'-bis(2-aminophenyl)oxalate (H2L), for the extractive spectrophotometric determination of copper has been prepared. The ligand, H2L, forms a 1:1 complex with copper(II) in methanol. The molar absorptivity of Cu(II)-S,S'-bis(2-aminophenyl) oxalate complex in methanol is 5365 M-1 cm(-1) at 504 nm. The method has been applied for the determination of copper in pharmaceutical formulations, environmental and foodstuff samples. (C) 1999 Elsevier Science B.V. All rights reserved.