Solid-phase extraction of copper with lead 4-benzylpiperidinedithiocarbamate on microcrystalline naphthalene and its spectrophotometric determination

Cesur H., Bati B.

Turkish Journal of Chemistry, vol.26, no.4, pp.599-605, 2002 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 26 Issue: 4
  • Publication Date: 2002
  • Journal Name: Turkish Journal of Chemistry
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, TR DİZİN (ULAKBİM)
  • Page Numbers: pp.599-605
  • Keywords: 4-benzylpiperidinedithiocarbamate, Copper, Microcrystalline naphthalene, Solid-phase extraction, UV-VIS spectrophotometry
  • Ondokuz Mayıs University Affiliated: Yes

Abstract

Using lead 4-benzylpiperidinedithiocarbamate complex (Pb(4-BPDC)2), a solid-phase extraction method was developed for pre-concentration and spectrophotometric determination of copper in water samples. In this method, copper in large volume liquid phase quantitatively replaces lead on colorless Pb(4-BPDC)2 complex and naphthalene solid phase mixture forming Cu-4-benzylpiperidinedithiocarbamate complex (Cu(4-BPDC)2). The solid phase containing colored Cu(4-BPDC)2 is dissolved in chloroform and its absorbance is measured at 437 nm against the reagent blank. The range of linearity is 0.4 -10 μgml-1 of copper in chloroform, the molar absorptivity of the complex determined from the linear portion of Beer's law plot is 8.197×103 lmol-1cm-1 and the sensitivity is 0.0013 μgcm-2 for an absorbance of 0.001.