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- Analytical methods to assess inorganic contaminants in foods. Quality control on food composition, including trace elementsPublication . Coelho, InêsContaminants in food can be of different origins and types. Adequate analytical methods are fundamental to assess contaminants in food. The methodology of Inductively Coupled Plasma Mass Spectrometry (ICP-MS) is currently used in numerous research fields, including biomedicine, pharmaceutics, geochemistry, proteomics, materials science, food safety and the nuclear industry. The principal advantages of this methodology are multielement capacity, high sensitivity, hyphenated techniques, wide working range (linearity) and high sample throughput. The reliability of ICP-MS results is ensured by rigorous quality control. Some trace elements analysed by ICP-MS integrate the Portuguese Food Composition Database, a national reference document for the composition of foods consumed in Portugal. This document includes information about 42 nutrients in different foodstuffs.