This is because of the high reactively of ENPs which can interact with minerals, carbohydrates and protein chains in the food they come into contact with. Therefore, the convenience of an appropriate analytical technique to characterise the level and type of ENPs in both food and beverage matrices is important as well as challenging (Dudkiewicz et al., 2011). In this respect, the quantification of silver via ICP-MS measurement includes both its ionic as well as the elemental ENP form, which therefore requires a combination of other methods like SEM and TEM in addition to ICP-MS to confirm the presence of ENP release from food packaging materials (Mitrano et al., 2012).