This is in contradiction with what was recorded in this study in which canned tuna recorded the highest concentration. However the results in this study in general are below what was reported by Waqar et al. (2005). In all the canned fish analyzed canned tuna fish recorded the highest cadmium concentration of 0.45 lg g1 followed by mackerel (0.44 lg g1 wet weight). The concentration of cadmium in canned tuna fish reported by Emami Khansari et al.(2005) ranged from 0.005 to 0.072 lg g1. These results are by far
lower than what was obtained in this study. The Food and Drugs Administration (FDA) of USA also reported cadmium concentration ranging from 0.006 to 0.088 lg g1. These levels are also lower than what was obtained in this study. The concentration of cadmium
varied from one brand of fish to the other. The variation of the cadmium concentration in the different canned fish analyzed could be attributed to the variation in the age of the fish and the source of the fish. Levels of cadmium in canned sardine and canned mackerel in Turkey ranged from 0.004 to 0.011 and 0.005 to 0.01 lg g1 respectively (Manthey-Karl, Ostermeyer,Altınelataman, Çelik, & Oehlenschläger, 2014).