Adsorptive square wave and linear sweep stripping measurements of germanium(IV) in the presence of N-(phenyl)-3-hydroxysalicylaldimine

Gokmese F., Gokmese E., Cekirdek P., Solak A.

BULLETIN OF ELECTROCHEMISTRY, vol.21, no.5, pp.193-197, 2005 (SCI-Expanded) identifier identifier

  • Publication Type: Article / Article
  • Volume: 21 Issue: 5
  • Publication Date: 2005
  • Journal Name: BULLETIN OF ELECTROCHEMISTRY
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus
  • Page Numbers: pp.193-197
  • Keywords: germanium determination, square wave voltammetry, N-(phenyl)-3-hydroxysalicylaidimine, adsorption wave, DIFFERENTIAL-PULSE POLAROGRAPHY, VOLTAMMETRY, SPECTROMETRY, PYROGALLOL
  • Ankara University Affiliated: No

Abstract

Two adsorptive stripping voltammetric techniques for the determination of trace amounts of germanium have been developed. A reduction peak of adsorbed germanium(IV)-N-(phenyl)-3-hydroxysalicylaidimine complex on a hanging mercury drop electrode was observed at -0.42 V vs. Ag/AgCl electrode and exploited for analytical purposes. The adsorption conditions of the complex were explored and effects of operational parameters on the response for both the square wave and linear sweep stripping techniques were examined. The working linear range was established by a regression analysis and the two methods were compared on the basis of linear ranges, sensitivities and detection limits. For the adsorptive square wave stripping method, the detection limit is 1.50 x 10(-8) M and the coefficent of variation is 2.57%. Possible interferences by some ions were also determined.