The determination of some heavy metals in food samples by flame atomic absorption spectrometry after their separation-preconcentration on bis salicyl aldehyde, 1,3 propan diimine (BSPDI) loaded on activated carbon

J Hazard Mater. 2008 Jun 15;154(1-3):128-34. doi: 10.1016/j.jhazmat.2007.10.003. Epub 2007 Oct 6.


A sensitive and simple method for the simultaneous preconcentration of Cr3+, Fe3+, Cu2+, Ni2+, Co2+ and Zn2+ in real samples has been reported. The method is based on the adsorption of analytes on bis salicyl aldehyde, 1,3 propan diimine (BSPDI) loaded on activated carbon. The adsorbed metals on modified activated carbon were eluted using 8 mL of 2 mol L(-1) nitric acid in acetone or 10 mL of 4 mol L(-1) HNO3. The influences of the analytical parameters including pH and sample volume were investigated. The effects of matrix ions on the retentions of the analytes were also examined. The recoveries of analytes were generally quantitative. The method has been successfully applied for these metals content evaluation in some food samples.

MeSH terms

  • Adsorption
  • Animals
  • Carbon / chemistry*
  • Environmental Monitoring
  • Environmental Pollutants / analysis*
  • Fishes
  • Food Contamination / analysis*
  • Hydrogen-Ion Concentration
  • Imines / chemistry*
  • Ligands
  • Liver / chemistry
  • Meat / analysis
  • Metals, Heavy / analysis*
  • Spectrophotometry, Atomic
  • Vegetables / chemistry


  • Environmental Pollutants
  • Imines
  • Ligands
  • Metals, Heavy
  • Carbon