Abstract
Potential applications of engineered nanomaterials (ENM) in food have shown great potential benefits and improvements over existing technologies. Many of the applications are still in the research and developmental stage and would require rigorous food safety testing and ultimately consumer acceptance. Within the European Union, which has taken active role in regulating ENM, nano/size-specific provisions have been implemented into several food-related directives and regulations. The lack of standardized methods for the detection and characterization of ENM in foods as well as their potential absorption renders the effective implementation of the legal requirements presently difficult. One favored approach is the combination of field-flow fractionation and ICP-MS for successive quantitative and qualitative nanomaterial analysis. For simultaneous characterization of size and chemical composition of inorganic nanoparticles, single-particle ICP-MS arose as a promising technique.
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