Selective Determination of Copper in Water Samples by Atomic Absorption Spectrometry after Cloud Point Extraction

Yetimoglu E. K., Urucu O. A., Gunduz Z. Y., Filik H.

ANALYTICAL LETTERS, vol.43, no.12, pp.1846-1856, 2010 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 43 Issue: 12
  • Publication Date: 2010
  • Doi Number: 10.1080/00032710903502132
  • Journal Name: ANALYTICAL LETTERS
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.1846-1856
  • Istanbul University Affiliated: Yes

Abstract

A preconcentration methodology utilizing the cloud point phenomenon is described for the determination of copper by flame atomic absorption spectrometry. The reagent Sulfathiazolylazo resorsin was used as a complexing agent. The preconcentration factor of 25-fold was obtained. The calibration curve is linear in the range of 4-400 mu gL-1 with a limit of detection of 0.64 mu gL-1. The relative standard deviation (n=5, 12 mu gL-1) was 3.5%. The cloud point is formed in the presence of phenol at room temperature. The method was successfully applied to the determination of copper in water samples and a standard reference material.