From Figure 3.3, you can see that the amount of the nutrients Ca, Cl, Mg, Mn, Na, K, Fe, Zn, Se are low, only 1/5 compared with the standards of the IOM and the WHO, the highest concentrations of fish form Se is in Dalat by 18.66% compared to the standard, the ratio of Older patterns of mackerels are reaching over 50% compared to standard (95.52% in Ninh Thuan , 56.39% in Dalat, 67.66% at Nha Trang). Toxin concentrations of Hg in model mackerels low (below 15%), As in the template content mackerels in Dalat and Nha Trang exceeding the WHO standard (175.78% in Dalat, 137.4% at Nha Trang), at concentrations of Ninh Thuan As close by the standards of the WHO (93.33%).
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