Characterisation of powdered milk by ICP-MS

Milk and dairy products play an important role in the human diet. From infants to adults, various types of dairy products accompany us in our everyday lives and provide us with important major and trace elements, vitamins, and other essential substances. Since many dairy products are perishable and have a limited shelf life, powdered milk is the alternative for preparing milk for direct consumption or for processing into other products. The growing use of powdered milk in infant nutrition requires a strict quality control to ensure the quality of the product on a permanent basis. Here, the samples are not only examined for toxic elements such as Cd, As, Hg, and Pb but also monitored for the levels of major and trace elements. Since the elements are present in very different concentration levels ranging from g/kg to µg/kg, different analytical techniques are usually used to cover all concentration ranges.

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