Determination of some inorganic metals in edible vegetable oils by inductively coupled plasma atomic emission spectroscopy (ICP-AES)


  • Erol Pehlivan Department of Chemical Engineering, Selcuk University
  • Gulsin Arslan Department of Chemistry, Selcuk University
  • Fethiye Gode Department of Chemistry, Suleyman Demirel University
  • Turkan Altun Department of Chemical Engineering, Selcuk University
  • M. Musa Özcan Department of Food Engineering, Faculty of Agricultural, Selcuk University



Edible oil, ICP-AES, Vegetable oils, Toxic metals


Seventeen edible vegetable oils were analyzed spectrometrically for their metal (Cu, Fe, Mn, Co, Cr, Pb, Cd, Ni, and Zn) contents. Toxic metals in edible vegetable oils were determined by Inductively Coupled Plasma Atomic Emission Spectrometry (ICP-AES). The highest metal concentrations were measured as 0.0850, 0.0352, 0.0220, 0.0040, 0.0010, 0.0074, 0.0045, 0.0254 and 0.2870 mg/kg for copper in almond oil, for iron in corn oil-(c), for manganese in soybean oil, for cobalt in sunflower oil-(b) and almond oil, for chromium in almond oil, for lead in virgin olive oil, for cadmium in sunflower oil-(e), for nickel almond oil and for zinc in almond oil respectively. The method for determining toxic metals in edible vegetable oils by using ICP-AES is discussed. The metals were extracted from low quantities of oil (2-3 g) with a 10% nitric acid solution. The extracted metal in acid solution can be injected into the ICPAES. The proposed method is simple and allows the metals to be determined in edible vegetable oils with a precision estimated below 10% relative standard deviation (RSD) for Cu, 5% for Fe, 15% for Mn, 8% for Co, 10% for Cr, 20% for Pb, 5% for Cd, 16% for Ni and 11% for Zn.


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How to Cite

Pehlivan E, Arslan G, Gode F, Altun T, Musa Özcan M. Determination of some inorganic metals in edible vegetable oils by inductively coupled plasma atomic emission spectroscopy (ICP-AES). grasasaceites [Internet]. 2008Sep.30 [cited 2023Dec.7];59(3):239-44. Available from: