Evaluation of the ETA-AAS and HG-AAS Methods of Selenium Determination in Vegetables

  • O. Hegedüs Research Institute of Vegetables, Nové Zámky,
  • A. Hegedüsová Department of Chemistry, Constantine the Philosopher University in Nitra, Slovak Republic
  • J. Gašparík Regional Authority of Public Health, Nové Zámky,
  • A. Ivičičová Regional Authority of Public Health, Nové Zámky,

Abstrakt

Two methods of selenium determination, ETA-AAS and HG-AAS, were compared and evaluated. The following validation parameters were determined: accuracy (under repeatability conditions), trueness, calibration curve and linearity, limit of detection, limit of determination and combined standard uncertainty of the method. The HG-AAS method was more suitable for the determination of low selenium concentrations in vegetables. The results were calculated by the standard addition method because of the strong matrix effect.
Publikované
2005-08-15
Sekce
Články