Assessments of Selected Essential Elements in Canned Tuna Marketed in Jordan

In this study, the levels of five macroelements and eight microelements in 104 samples of canned tuna were determined by ICP-OES and flame photometer. The concentrations of macroelements were found in the range of 1947-3963 mg/kg for phosphorous, 1044-2883 mg/kg for potassium, 665-2022 mg/kg for sodium, 241-457 mg/kg for magnesium and 107-384 mg/kg for calcium. The contents of investigated microelements in canned tuna samples were found to be in the range 4.1-21.1 mg/kg for iron, 3.0-12.1 mg/kg for zinc, 0.12-0.92 mg/kg for copper, 0.11-1.07 mg/kg for selenium, <0.02 to 0.81 mg/kg for manganese, <0.04-0.23 mg/kg for chromium, <0.03-0.07 mg/kg for cobalt and <0.04-0.06 mg/kg for molybdenum, The results were compared with the literature values.