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  • Title: Inductively coupled plasma optical emission spectroscopy determination of trace element composition of argan oil.
    Author: Gonzálvez A, Ghanjaoui ME, El Rhazi M, de la Guardia M.
    Journal: Food Sci Technol Int; 2010 Feb; 16(1):65-71. PubMed ID: 21339122.
    Abstract:
    A methodology based on inductively coupled plasma optical emission spectroscopy (ICP-OES) after microwave assisted acid digestion has been developed to determine the trace element content of Moroccan argan oil. Limit of detection values equal or lower than few mg/kg were obtained for all elements under study. To assure the accuracy of the whole procedure, recovery studies were carried out on argan oil samples spiked at different concentration levels from 10 to 200 µg/L. Quantitative average recovery values were obtained for all elements evaluated, demonstrating the suitability of this methodology for the determination of trace elements in argan oil samples. Aluminum, calcium, chromium, iron, potassium, lithium, magnesium, sodium, vanadium and zinc were quantitatively determined in Moroccan argan oils being found that their concentration is different of that found in other edible oils thus offering a way for authentication and for the evaluation of possible adulterations.
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