Measuring Major and Minor Elements in Milk Using the Agilent MP-AES 4200
27 August 2015

This application note presents the analytical performance of the Agilent 4200 MP-AES for the analysis of milk. Both major elements Ca, K, Mg, Na and P and minor elements Fe, Zn and Cu were determined in a standard reference material of non-fat milk powder. Accurate routine testing of major and minor elements in milk is a critical indicator to the quality and nutritional content  of the product. Milk is a challenging matrix but elemental stabilization and homogenization can be achieved by a simple dilution into an aqueous diluent containing Tetramethylammonium Hydroxide (TMAH), Triton X-100 surfactant and Ethylenediaminetetraacetic Acid (EDTA).