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Fresenius' Journal of Analytical Chemistry

, Volume 358, Issue 4, pp 475–479 | Cite as

Flow injection determination of silver with spectrophotometric detection

  • A. A. Ensafi
  • K. Zarei
ORIGINAL PAPER

Abstract

 A flow injection system is proposed for the rapid and sensitive determination of trace concentrations of silver(I) based on its catalytic effect on the oxidation of gallocyanine by peroxodisulphate in the presence of 1,10-phenanthroline as an activator with spectrophotometric detection. Silver can be determined in the range of 0.002–0.700 μg with a limit of detection of 0.001 μg. The relative standard deviation for ten replicate determinations of 0.035 and 0.170 μg of Ag(I) was 2.8% and 0.9%, respectively. The method was successfully applied to the determination of silver in real samples.

Keywords

Oxidation Standard Deviation Relative Standard Deviation Real Sample Injection System 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • A. A. Ensafi
    • 1
  • K. Zarei
    • 1
  1. 1.College of Chemistry, Isfahan University of Technology, Isfahan, IranIR

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