The physical properties such as: density, refractive index,
viscosity, and acidity of samples of olive oil from different geographical locations and heights in
Palestine were measured. The measured physical properties are in agreement with the international and local assigned
value. The concentration of Al, Cd, Cu, Fe, K, Mg, Mn, Na, Ni, Pb and Zn elements in olive oil samples are measured by
inductively coupled plasma mass spectrometry ICP-MS. It was found that Magnesium (Mg) is the most concentrated
metal detected (294.738-782.968 μg/g), followed by concentration of sodium (Na) (73.401-390.699 μg/g) and
potassium (K) (18.473-168.883 μg/g). Concentrations of iron, copper and lead in
Palestinian olive oil don’t agree with concentration of International Olive Council (IOC). The differences in
concentration in metals of olive oil depend on several factors among the type
of olive tree, storage age, height and
geographical location. There is a positive relation between the concentration
of metals in olive oil and physical
properties as density, refractive index, viscosity, and acidity. The daily intake
rate of these metals shows no risk to
human health according to US Environmental Protection Agency (EPA)
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Determination_of_Some_Metallic_Elements_and_their_Effect_on_Physical_Properties_of_Edible_Olive_Oil_in_Palestine (2).pdf | 1.46 MB |