Journal of Analytical Chemistry

, Volume 61, Issue 2, pp 124–128 | Cite as

Highly selective cloud point extraction and preconcentration of trace amounts of silver in water samples using synthesized Schiff’s base followed by flame atomic absorption spectrometric determination

  • F. Shemirani
  • M. R. Jamali
  • R. R. Kozani
  • M. S. Niasari


A simple and useful method employing cloud point extraction is proposed for the preconcentration and separation of silver in water samples. The silver cation reacts with bis(2-mercaptoanil) acetylacetone (BMAA) at pH 6. The resulting compound is subsequently entrapped in the Triton X-114 micelles. After optimization of the complexation and extraction conditions, a preconcentration factor of 50 was obtained (volume of initial sample was 10 mL). As an analytical example, trace amounts of Ag were determined, after preconcentration, in a complex aqueous matrix such as seawater using flame atomic absorption spectrometry. The calibration curve was linear in the range 2–200 ng/mL and the limit of detection was 0.43 ng/mL. The relative standard deviation was lower than 2.4%.


Water Sample Relative Standard Deviation Trace Amount Cloud Point Schiff 
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

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • F. Shemirani
    • 1
  • M. R. Jamali
    • 1
  • R. R. Kozani
    • 1
  • M. S. Niasari
    • 2
  1. 1.Department of Chemistry, Faculty of ScienceUniversity of TehranTehranIran
  2. 2.Department of Chemistry, Faculty of ScienceUniversity of KashanKashanIran

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